.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,29 +0,0 @@
----
-name: Bug report
-about: Create a report to help us improve
-title: ''
-labels: ''
-assignees: ''
-
----
-
-**Describe the bug**
-<!-- A clear and concise description of what the bug is. -->
-
-**Version**
-<!-- What versions of the following libraries are you using? -->
-- `sop-java`:
-- `pgpainless-core`:
-- `bouncycastle`: 
-
-**To Reproduce**
-<!-- Steps to reproduce the behavior: -->
-```
-Example Code Block
-```
-
-**Expected behavior**
-<!-- A clear and concise description of what you expected to happen. -->
-
-**Additional context**
-<!-- Add any other context about the problem here. -->

.reuse/dep5

@@ -17,13 +17,4 @@ License: Apache-2.0
 # Woodpecker build files
 Files: .woodpecker/*
 Copyright: 2022 the original author or authors.
-License: Apache-2.0
-
-Files: external-sop/src/main/resources/sop/testsuite/external/*
-Copyright: 2023 the original author or authors
-License: Apache-2.0
-
-# Github Issue Templates
-Files: .github/ISSUE_TEMPLATE/*
-Copyright: 2024 the original author or authors
-License: Apache-2.0
+License: Apache-2.0

.woodpecker/.build.yml

@@ -0,0 +1,12 @@
+pipeline:
+  run:
+    image: gradle:7.5-jdk8
+    commands:
+      - git checkout $CI_COMMIT_BRANCH
+      # Code works
+      - gradle test
+      # Code is clean
+      - gradle check javadocAll
+      # Code has coverage
+      - gradle jacocoRootReport coveralls
+    secrets: [COVERALLS_REPO_TOKEN]

.woodpecker/.reuse.yml

@@ -1,9 +1,7 @@
 # Code is licensed properly
 # See https://reuse.software/
-steps:
+pipeline:
   reuse:
-    when:
-      event: push
     image: fsfe/reuse:latest
     commands:
-      - reuse lint
+      - reuse lint

.woodpecker/build.yml

@@ -1,19 +0,0 @@
-steps:
-  run:
-    when:
-      event: push
-    image: gradle:7.6-jdk11-jammy
-    commands:
-      # Install Sequoia-SOP
-      - apt update && apt install --yes sqop
-      # Checkout code
-      - git checkout $CI_COMMIT_BRANCH
-      # Prepare CI
-      - cp external-sop/src/main/resources/sop/testsuite/external/config.json.ci external-sop/src/main/resources/sop/testsuite/external/config.json
-      # Code works
-      - gradle test
-      # Code is clean
-      - gradle check javadocAll
-      # Code has coverage
-      - gradle jacocoRootReport coveralls
-    secrets: [coveralls_repo_token]

CHANGELOG.md

@@ -6,131 +6,6 @@ SPDX-License-Identifier: Apache-2.0
 
 # Changelog
 
-## 10.0.2
-- Downgrade `logback-core` to `1.2.13`
-
-## 10.0.1
-- Remove `label()` option from `Armor` operation
-- Fix exit code for 'Missing required option/parameter' error
-- Fix `revoke-key`: Allow for multiple invocations of `--with-key-password` option
-- Fix `EncryptExternal` use of `--sign-with` parameter
-- Fix `NullPointerException` in `DecryptExternal` when reading lines
-- Fix `DecryptExternal` use of `verifications-out`
-- Test suite: Ignore tests if `UnsupportedOption` is thrown
-- Bump `logback-core` to `1.4.14`
-
-## 10.0.0
-- Update implementation to [SOP Specification revision 10](https://www.ietf.org/archive/id/draft-dkg-openpgp-stateless-cli-10.html).
-  - Throw `BadData` when passing KEYS where CERTS are expected
-  - Introduce `sopv` interface subset with revision `1.0`
-  - Add `sop version --sopv`
-
-## 8.0.1
-- `decrypt`: Do not throw `NoSignature` exception (exit code 3) if `--verify-with` is provided, but `VERIFICATIONS` is empty.
-
-## 8.0.0
-- Rewrote `sop-java` in Kotlin
-- Rewrote `sop-java-picocli` in Kotlin
-- Rewrote `external-sop` in Kotlin
-- Update implementation to [SOP Specification revision 08](https://www.ietf.org/archive/id/draft-dkg-openpgp-stateless-cli-08.html).
-  - Add `--no-armor` option to `revoke-key` and `change-key-password` subcommands
-  - `armor`: Deprecate `--label` option in `sop-java` and remove in `sop-java-picocli`
-  - `encrypt`: Add `--session-key-out` option
-- Slight API changes:
-  - `sop.encrypt().plaintext()` now returns a `ReadyWithResult<EncryptionResult>` instead of `Ready`.
-  - `EncryptionResult` is a new result type, that provides access to the session key of an encrypted message
-  - Change `ArmorLabel` values into lowercase
-  - Change `EncryptAs` values into lowercase
-  - Change `SignAs` values into lowercase
-
-## 7.0.0
-- Update implementation to [SOP Specification revision 07](https://www.ietf.org/archive/id/draft-dkg-openpgp-stateless-cli-07.html).
-  - Add support for new `revoke-key` subcommand
-  - Add support for new `change-key-password` subcommand
-  - Add support for new `--signing-only` option of `generate-key` subcommand
-- Add `dearmor.data(String)` utility method
-- Fix typos in, and improve i18n of CLI help pages
-
-## 6.1.0
-- `listProfiles()`: Add shortcut methods `generateKey()` and `encrypt()`
-- Add DSL for testing `Verification` results
-- `Verification`
-  - Return `Optional<SignatureMode>` for `getSignatureMode()`
-  - Return `Optional<String>` for `getDescription()`
-- `Profile`
-  - Add support for profiles without description
-  - Return `Optional<String>` for `getDescription()`
-  - Add `parse(String)` method for parsing profile lines
-- `sop-java`: Add dependency on `com.google.code.findbugs:jsr305` for `@Nullable`, `@Nonnull` annotations
-- `UTCUtil`: `parseUTCDate()` is now `@Nonnull` and throws a `ParseException` for invalid inputs
-- `UTF8Util`: `decodeUTF8()` now throws `CharacterCodingException` instead of `SOPGPException.PasswordNotHumanReadable`
-- `external-sop`: Properly map error codes to new exception types (ported from `5.0.1`):
-  - `UNSUPPORTED_PROFILE`
-  - `INCOMPATIBLE_OPTIONS`
-
-## 5.0.1
-- `external-sop`: Properly map error codes to new exception types:
-  - `UNSUPPORTED_PROFILE`
-  - `INCOMPATIBLE_OPTIONS`
-
-## 6.0.0
-- Update implementation to [SOP Specification revision 06](https://www.ietf.org/archive/id/draft-dkg-openpgp-stateless-cli-06.html).
-  - Add option `--profile=XYZ` to `encrypt` subcommand
-  - Add option `--sop-spec` to `version` subcommand
-  - `Version`: Add different getters for specification-related values
-
-## 5.0.0
-- Update implementation to [SOP Specification revision 05](https://www.ietf.org/archive/id/draft-dkg-openpgp-stateless-cli-05.html).
-  - Add the concept of profiles
-  - Add `list-profiles` subcommand
-  - Add option `--profile=XYZ` to `generate-key` subcommand
-  - `Verification` objects can now optionally indicate the type of the signature (`mode:text` or `mode:binary`)
-  - `Verification` objects can now contain an optional description of the signature
-  - `inline-sign` now throws an error if incompatible options `--as=clearsigned` and `--no-armor` are used
-
-## 4.1.1
-- Restructure test suite to allow simultaneous testing of multiple backends
-- Fix IOException in `sop sign` due to premature stream closing
-- Allow for downstream implementations of `sop-java` to reuse the test suite
-  - Check out Javadoc of `sop-java/src/testFixtures/java/sop/testsuite/SOPInstanceFactory` for details
-
-## 4.1.0
-- Add module `external-sop`
-  - This module implements the `sop-java` interfaces and allows the use of an external SOP binary
-- `decrypt`: Rename `--not-before`, `--not-after` to `--verify-not-before`, `--verify-not-after`
-- `decrypt`: Throw `NoSignature` error if no verifiable signature found, but signature verification is requested using `--verify-with`.
-- `inline-sign`: Fix parameter label of `--as=clearsigned`
-- `ArmorLabel`, `EncryptAs`, `SignAs`: make `toString()` return lowercase
-
-## 4.0.7
-- Make i18n string for `--stacktrace` option translatable
-- Make manpages generation reproducible
-- `dearmor`: Transform `IOException` into `BadData`
-
-## 4.0.6
-- Add support for file descriptors on unix / linux systems
-
-## 4.0.5
-- `inline-sign`: Make possible values of `--as` option lowercase
-- `inline-sign`: Rename value `cleartextsigned` of option `--as` to `clearsigned`
-
-## 4.0.4
-- Not found
-
-## 4.0.3
-- `decrypt`: Rename option `--verify-out` to `--verifications-out`, but keep `--verify-out` as alias
-- Fix: `decrypt`: Flush output stream in order to prevent empty file as result of `--session-key-out`
-- Fix: Properly format session key for `--session-key-out`
-- Be less finicky about input session key formats
-  - Allow upper- and lowercase hexadecimal keys
-  - Allow trailing whitespace
-
-## 4.0.2
-- Fix: `verify`: Do not include detached signature in list of certificates
-- Fix: `inline-verify`: Also include the first argument in list of certificates
-- Hide stacktraces by default and add `--stacktrace` option to print them
-- Properly throw `CannotDecrypt` exception when message could not be decrypted
-
 ## 4.0.1
 - Use shared resources for i18n
   - Fix strings not being resolved properly when downstream renames `sop` command

README.md

@@ -7,7 +7,8 @@ SPDX-License-Identifier: Apache-2.0
 # SOP for Java
 
 [![status-badge](https://ci.codeberg.org/api/badges/PGPainless/sop-java/status.svg)](https://ci.codeberg.org/PGPainless/sop-java)
-[![Spec Revision: 10](https://img.shields.io/badge/Spec%20Revision-10-blue)](https://datatracker.ietf.org/doc/draft-dkg-openpgp-stateless-cli/10/)
+[![Maven Central](https://badgen.net/maven/v/maven-central/org.pgpainless/sop-java)](https://search.maven.org/artifact/org.pgpainless/sop-java)
+[![Spec Revision: 4](https://img.shields.io/badge/Spec%20Revision-4-blue)](https://datatracker.ietf.org/doc/draft-dkg-openpgp-stateless-cli/04/)
 [![Coverage Status](https://coveralls.io/repos/github/pgpainless/sop-java/badge.svg?branch=main)](https://coveralls.io/github/pgpainless/sop-java?branch=main)
 [![REUSE status](https://api.reuse.software/badge/github.com/pgpainless/sop-java)](https://api.reuse.software/info/github.com/pgpainless/sop-java)
 
@@ -15,9 +16,6 @@ The [Stateless OpenPGP Protocol](https://datatracker.ietf.org/doc/draft-dkg-open
 defines a generic stateless CLI for dealing with OpenPGP messages.
 Its goal is to provide a minimal, yet powerful API for the most common OpenPGP related operations.
 
-[![Packaging status](https://repology.org/badge/vertical-allrepos/sop-java.svg)](https://repology.org/project/pgpainless/versions)
-[![Maven Central](https://badgen.net/maven/v/maven-central/org.pgpainless/sop-java)](https://search.maven.org/artifact/org.pgpainless/sop-java)
-
 ## Modules
 
 The repository contains the following modules:
@@ -25,16 +23,13 @@ The repository contains the following modules:
 * [sop-java](/sop-java) defines a set of Java interfaces describing the Stateless OpenPGP Protocol.
 * [sop-java-picocli](/sop-java-picocli) contains a wrapper application that transforms the `sop-java` API into a command line application
 compatible with the SOP-CLI specification.
-* [external-sop](/external-sop) contains an API implementation that can be used to forward API calls to a SOP executable,
-allowing to delegate the implementation logic to an arbitrary SOP CLI implementation.
 
 ## Known Implementations
 (Please expand!)
 
-| Project                                                                             | Description                                                                              |
-|-------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------|
-| [pgpainless-sop](https://github.com/pgpainless/pgpainless/tree/main/pgpainless-sop) | Implementation of `sop-java` using PGPainless                                            |
-| [external-sop](https://github.com/pgpainless/sop-java/tree/main/external-sop)       | Implementation of `sop-java` that allows binding to external SOP binaries such as `sqop` |
+| Project                                                                               | Description                                   |
+|---------------------------------------------------------------------------------------|-----------------------------------------------|
+| [pgpainless-sop](https://github.com/pgpainless/pgpainless/tree/master/pgpainless-sop) | Implementation of `sop-java` using PGPainless |
 
 ### Implementations in other languages
 | Project                                         | Language |

build.gradle

@@ -19,8 +19,6 @@ buildscript {
 
 plugins {
     id 'ru.vyarus.animalsniffer' version '1.5.3'
-    id 'org.jetbrains.kotlin.jvm' version "1.8.10"
-    id 'com.diffplug.spotless' version '6.22.0' apply false
 }
 
 apply from: 'version.gradle'
@@ -31,8 +29,6 @@ allprojects {
     apply plugin: 'eclipse'
     apply plugin: 'jacoco'
     apply plugin: 'checkstyle'
-    apply plugin: 'kotlin'
-    apply plugin: 'com.diffplug.spotless'
 
     // For non-cli modules enable android api compatibility check
     if (it.name.equals('sop-java')) {
@@ -57,12 +53,6 @@ allprojects {
         toolVersion = '8.18'
     }
 
-    spotless {
-        kotlin {
-            ktfmt().dropboxStyle()
-        }
-    }
-
     group 'org.pgpainless'
     description = "Stateless OpenPGP Protocol API for Java"
     version = shortVersion
@@ -79,13 +69,6 @@ allprojects {
         reproducibleFileOrder = true
     }
 
-    // Compatibility of default implementations in kotlin interfaces with Java implementations.
-    tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).configureEach {
-        kotlinOptions {
-            freeCompilerArgs += ["-Xjvm-default=all-compatibility"]
-        }
-    }
-
     project.ext {
         rootConfigDir = new File(rootDir, 'config')
         gitCommit = getGitCommit()

external-sop/README.md

@@ -1,59 +0,0 @@
-<!--
-SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
-
-SPDX-License-Identifier: Apache-2.0
--->
-
-# External-SOP
-
-Access an external SOP binary from within your Java/Kotlin application.
-
-This module implements a backend for `sop-java` that binds to external SOP binaries (such as 
-[sqop](https://gitlab.com/sequoia-pgp/sequoia-sop/), [python-sop](https://pypi.org/project/sop/) etc.).
-SOP operation calls will be delegated to the external binary, and the results are parsed back, so that you can
-access them from your Java application as usual.
-
-## Example
-Let's say you are using `ExampleSOP` which is a binary installed in `/usr/bin/example-sop`.
-Instantiating a `SOP` object is as simple as this:
-
-```java
-SOP sop = new ExternalSOP("/usr/bin/example-sop");
-```
-
-This SOP object can now be used as usual (see [here](../sop-java/README.md)).
-
-Keep in mind the license of the external SOP binary when integrating one with your project!
-
-Some SOP binaries might require additional configuration, e.g. a Java based SOP might need to know which JAVA_HOME to use.
-For this purpose, additional environment variables can be passed in using a `Properties` object:
-
-```java
-Properties properties = new Properties();
-properties.put("JAVA_HOME", "/usr/lib/jvm/[...]");
-SOP sop = new ExternalSOP("/usr/bin/example-sop", properties);
-```
-
-Most results of SOP operations are communicated via standard-out, standard-in. However, some operations rely on
-writing results to additional output files.
-To handle such results, we need to provide a temporary directory, to which those results can be written by the SOP,
-and from which `External-SOP` reads them back.
-The default implementation relies on `Files.createTempDirectory()` to provide a temporary directory.
-It is however possible to overwrite this behavior, in order to specify a custom, perhaps more private directory:
-
-```java
-ExternalSOP.TempDirProvider provider = new ExternalSOP.TempDirProvider() {
-    @Override
-    public File provideTempDirectory() throws IOException {
-        File myTempDir = new File("/path/to/directory");
-        myTempDir.mkdirs();
-        return myTempDir;
-    }
-};
-SOP sop = new ExternalSOP("/usr/bin/example-sop", provider);
-```
-
-## Testing
-The `external-sop` module comes with a growing test suite, which tests SOP binaries against the expectations of the SOP specification.  
-To configure one or multiple backends for use with the test suite, just provide a custom `config.json` file in `src/main/resources/sop/external`.
-An example configuration file with the required file format is available as `config.json.example`.

external-sop/build.gradle

@@ -1,43 +0,0 @@
-// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-plugins {
-    id 'java-library'
-}
-
-group 'org.pgpainless'
-
-repositories {
-    mavenCentral()
-}
-
-dependencies {
-    testImplementation "org.junit.jupiter:junit-jupiter-api:$junitVersion"
-    testImplementation "org.junit.jupiter:junit-jupiter-params:$junitVersion"
-    testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:$junitVersion"
-
-    api project(":sop-java")
-    api "org.slf4j:slf4j-api:$slf4jVersion"
-    testImplementation "ch.qos.logback:logback-classic:$logbackVersion"
-
-    // @Nonnull, @Nullable...
-    implementation "com.google.code.findbugs:jsr305:$jsrVersion"
-
-    // The ExternalTestSubjectFactory reads json config file to find configured SOP binaries...
-    testImplementation "com.google.code.gson:gson:$gsonVersion"
-    // ...and extends TestSubjectFactory
-    testImplementation(testFixtures(project(":sop-java")))
-}
-
-test {
-    // Inject configured external SOP instances using our custom TestSubjectFactory
-    environment("test.implementation", "sop.testsuite.external.ExternalSOPInstanceFactory")
-
-    useJUnitPlatform()
-
-    // since we test external backends which we might not control,
-    //  we ignore test failures in this module
-    ignoreFailures = true
-}
-

external-sop/src/main/kotlin/sop/external/ExternalSOP.kt

@@ -1,318 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external
-
-import java.io.*
-import java.nio.file.Files
-import java.util.*
-import javax.annotation.Nonnull
-import sop.Ready
-import sop.SOP
-import sop.exception.SOPGPException.*
-import sop.external.ExternalSOP.TempDirProvider
-import sop.external.operation.*
-import sop.operation.*
-
-/**
- * Implementation of the [SOP] API using an external SOP binary.
- *
- * Instantiate an [ExternalSOP] object for the given binary and the given [TempDirProvider] using
- * empty environment variables.
- *
- * @param binaryName name / path of the SOP binary
- * @param tempDirProvider custom tempDirProvider
- */
-class ExternalSOP(
-    private val binaryName: String,
-    private val properties: Properties = Properties(),
-    private val tempDirProvider: TempDirProvider = defaultTempDirProvider()
-) : SOP {
-
-    constructor(
-        binaryName: String,
-        properties: Properties
-    ) : this(binaryName, properties, defaultTempDirProvider())
-
-    override fun version(): Version = VersionExternal(binaryName, properties)
-
-    override fun generateKey(): GenerateKey = GenerateKeyExternal(binaryName, properties)
-
-    override fun extractCert(): ExtractCert = ExtractCertExternal(binaryName, properties)
-
-    override fun detachedSign(): DetachedSign =
-        DetachedSignExternal(binaryName, properties, tempDirProvider)
-
-    override fun inlineSign(): InlineSign = InlineSignExternal(binaryName, properties)
-
-    override fun detachedVerify(): DetachedVerify = DetachedVerifyExternal(binaryName, properties)
-
-    override fun inlineVerify(): InlineVerify =
-        InlineVerifyExternal(binaryName, properties, tempDirProvider)
-
-    override fun inlineDetach(): InlineDetach =
-        InlineDetachExternal(binaryName, properties, tempDirProvider)
-
-    override fun encrypt(): Encrypt = EncryptExternal(binaryName, properties, tempDirProvider)
-
-    override fun decrypt(): Decrypt = DecryptExternal(binaryName, properties, tempDirProvider)
-
-    override fun armor(): Armor = ArmorExternal(binaryName, properties)
-
-    override fun dearmor(): Dearmor = DearmorExternal(binaryName, properties)
-
-    override fun listProfiles(): ListProfiles = ListProfilesExternal(binaryName, properties)
-
-    override fun revokeKey(): RevokeKey = RevokeKeyExternal(binaryName, properties)
-
-    override fun changeKeyPassword(): ChangeKeyPassword =
-        ChangeKeyPasswordExternal(binaryName, properties)
-
-    /**
-     * This interface can be used to provide a directory in which external SOP binaries can
-     * temporarily store additional results of OpenPGP operations such that the binding classes can
-     * parse them out from there. Unfortunately, on Java you cannot open
-     * [FileDescriptors][java.io.FileDescriptor] arbitrarily, so we have to rely on temporary files
-     * to pass results. An example: `sop decrypt` can emit signature verifications via
-     * `--verify-out=/path/to/tempfile`. [DecryptExternal] will then parse the temp file to make the
-     * result available to consumers. Temporary files are deleted after being read, yet creating
-     * temp files for sensitive information on disk might pose a security risk. Use with care!
-     */
-    fun interface TempDirProvider {
-
-        @Throws(IOException::class) fun provideTempDirectory(): File
-    }
-
-    companion object {
-
-        @JvmStatic
-        @Throws(IOException::class)
-        fun finish(process: Process) {
-            try {
-                mapExitCodeOrException(process)
-            } catch (e: InterruptedException) {
-                throw RuntimeException(e)
-            }
-        }
-
-        @JvmStatic
-        @Throws(InterruptedException::class, IOException::class)
-        private fun mapExitCodeOrException(process: Process) {
-            // wait for process termination
-            val exitCode = process.waitFor()
-
-            if (exitCode == 0) {
-                // we're good, bye
-                return
-            }
-
-            // Read error message
-            val errIn = process.errorStream
-            val errorMessage = readString(errIn)
-
-            when (exitCode) {
-                NoSignature.EXIT_CODE ->
-                    throw NoSignature(
-                        "External SOP backend reported error NoSignature ($exitCode):\n$errorMessage")
-                UnsupportedAsymmetricAlgo.EXIT_CODE ->
-                    throw UnsupportedOperationException(
-                        "External SOP backend reported error UnsupportedAsymmetricAlgo ($exitCode):\n$errorMessage")
-                CertCannotEncrypt.EXIT_CODE ->
-                    throw CertCannotEncrypt(
-                        "External SOP backend reported error CertCannotEncrypt ($exitCode):\n$errorMessage")
-                MissingArg.EXIT_CODE ->
-                    throw MissingArg(
-                        "External SOP backend reported error MissingArg ($exitCode):\n$errorMessage")
-                IncompleteVerification.EXIT_CODE ->
-                    throw IncompleteVerification(
-                        "External SOP backend reported error IncompleteVerification ($exitCode):\n$errorMessage")
-                CannotDecrypt.EXIT_CODE ->
-                    throw CannotDecrypt(
-                        "External SOP backend reported error CannotDecrypt ($exitCode):\n$errorMessage")
-                PasswordNotHumanReadable.EXIT_CODE ->
-                    throw PasswordNotHumanReadable(
-                        "External SOP backend reported error PasswordNotHumanReadable ($exitCode):\n$errorMessage")
-                UnsupportedOption.EXIT_CODE ->
-                    throw UnsupportedOption(
-                        "External SOP backend reported error UnsupportedOption ($exitCode):\n$errorMessage")
-                BadData.EXIT_CODE ->
-                    throw BadData(
-                        "External SOP backend reported error BadData ($exitCode):\n$errorMessage")
-                ExpectedText.EXIT_CODE ->
-                    throw ExpectedText(
-                        "External SOP backend reported error ExpectedText ($exitCode):\n$errorMessage")
-                OutputExists.EXIT_CODE ->
-                    throw OutputExists(
-                        "External SOP backend reported error OutputExists ($exitCode):\n$errorMessage")
-                MissingInput.EXIT_CODE ->
-                    throw MissingInput(
-                        "External SOP backend reported error MissingInput ($exitCode):\n$errorMessage")
-                KeyIsProtected.EXIT_CODE ->
-                    throw KeyIsProtected(
-                        "External SOP backend reported error KeyIsProtected ($exitCode):\n$errorMessage")
-                UnsupportedSubcommand.EXIT_CODE ->
-                    throw UnsupportedSubcommand(
-                        "External SOP backend reported error UnsupportedSubcommand ($exitCode):\n$errorMessage")
-                UnsupportedSpecialPrefix.EXIT_CODE ->
-                    throw UnsupportedSpecialPrefix(
-                        "External SOP backend reported error UnsupportedSpecialPrefix ($exitCode):\n$errorMessage")
-                AmbiguousInput.EXIT_CODE ->
-                    throw AmbiguousInput(
-                        "External SOP backend reported error AmbiguousInput ($exitCode):\n$errorMessage")
-                KeyCannotSign.EXIT_CODE ->
-                    throw KeyCannotSign(
-                        "External SOP backend reported error KeyCannotSign ($exitCode):\n$errorMessage")
-                IncompatibleOptions.EXIT_CODE ->
-                    throw IncompatibleOptions(
-                        "External SOP backend reported error IncompatibleOptions ($exitCode):\n$errorMessage")
-                UnsupportedProfile.EXIT_CODE ->
-                    throw UnsupportedProfile(
-                        "External SOP backend reported error UnsupportedProfile ($exitCode):\n$errorMessage")
-
-                // Did you forget to add a case for a new exception type?
-                else ->
-                    throw RuntimeException(
-                        "External SOP backend reported unknown exit code ($exitCode):\n$errorMessage")
-            }
-        }
-
-        /**
-         * Return all key-value pairs from the given [Properties] object as a list with items of the
-         * form `key=value`.
-         *
-         * @param properties properties
-         * @return list of key=value strings
-         */
-        @JvmStatic
-        fun propertiesToEnv(properties: Properties): List<String> =
-            properties.map { "${it.key}=${it.value}" }
-
-        /**
-         * Read the contents of the [InputStream] and return them as a [String].
-         *
-         * @param inputStream input stream
-         * @return string
-         * @throws IOException in case of an IO error
-         */
-        @JvmStatic
-        @Throws(IOException::class)
-        fun readString(inputStream: InputStream): String {
-            val bOut = ByteArrayOutputStream()
-            val buf = ByteArray(4096)
-            var r: Int
-            while (inputStream.read(buf).also { r = it } > 0) {
-                bOut.write(buf, 0, r)
-            }
-            return bOut.toString()
-        }
-
-        /**
-         * Execute the given command on the given [Runtime] with the given list of environment
-         * variables. This command does not transform any input data, and instead is purely a
-         * producer.
-         *
-         * @param runtime runtime
-         * @param commandList command
-         * @param envList environment variables
-         * @return ready to read the result from
-         */
-        @JvmStatic
-        fun executeProducingOperation(
-            runtime: Runtime,
-            commandList: List<String>,
-            envList: List<String>
-        ): Ready {
-            try {
-                val process = runtime.exec(commandList.toTypedArray(), envList.toTypedArray())
-                val stdIn = process.inputStream
-
-                return object : Ready() {
-                    @Throws(IOException::class)
-                    override fun writeTo(@Nonnull outputStream: OutputStream) {
-                        val buf = ByteArray(4096)
-                        var r: Int
-                        while (stdIn.read(buf).also { r = it } >= 0) {
-                            outputStream.write(buf, 0, r)
-                        }
-                        outputStream.flush()
-                        outputStream.close()
-                        finish(process)
-                    }
-                }
-            } catch (e: IOException) {
-                throw RuntimeException(e)
-            }
-        }
-
-        /**
-         * Execute the given command on the given runtime using the given environment variables. The
-         * given input stream provides input for the process. This command is a transformation,
-         * meaning it is given input data and transforms it into output data.
-         *
-         * @param runtime runtime
-         * @param commandList command
-         * @param envList environment variables
-         * @param standardIn stream of input data for the process
-         * @return ready to read the result from
-         */
-        @JvmStatic
-        fun executeTransformingOperation(
-            runtime: Runtime,
-            commandList: List<String>,
-            envList: List<String>,
-            standardIn: InputStream
-        ): Ready {
-            try {
-                val process = runtime.exec(commandList.toTypedArray(), envList.toTypedArray())
-                val processOut = process.outputStream
-                val processIn = process.inputStream
-
-                return object : Ready() {
-                    override fun writeTo(outputStream: OutputStream) {
-                        val buf = ByteArray(4096)
-                        var r: Int
-                        while (standardIn.read(buf).also { r = it } > 0) {
-                            processOut.write(buf, 0, r)
-                        }
-                        standardIn.close()
-
-                        try {
-                            processOut.flush()
-                            processOut.close()
-                        } catch (e: IOException) {
-                            // Perhaps the stream is already closed, in which case we ignore the
-                            // exception.
-                            if ("Stream closed" != e.message) {
-                                throw e
-                            }
-                        }
-
-                        while (processIn.read(buf).also { r = it } > 0) {
-                            outputStream.write(buf, 0, r)
-                        }
-                        processIn.close()
-
-                        outputStream.flush()
-                        outputStream.close()
-
-                        finish(process)
-                    }
-                }
-            } catch (e: IOException) {
-                throw RuntimeException(e)
-            }
-        }
-
-        /**
-         * Default implementation of the [TempDirProvider] which stores temporary files in the
-         * systems temp dir ([Files.createTempDirectory]).
-         *
-         * @return default implementation
-         */
-        @JvmStatic
-        fun defaultTempDirProvider(): TempDirProvider {
-            return TempDirProvider { Files.createTempDirectory("ext-sop").toFile() }
-        }
-    }
-}

external-sop/src/main/kotlin/sop/external/ExternalSOPV.kt

@@ -1,53 +0,0 @@
-// SPDX-FileCopyrightText: 2024 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external
-
-import java.nio.file.Files
-import java.util.*
-import sop.SOPV
-import sop.external.ExternalSOP.TempDirProvider
-import sop.external.operation.DetachedVerifyExternal
-import sop.external.operation.InlineVerifyExternal
-import sop.external.operation.VersionExternal
-import sop.operation.DetachedVerify
-import sop.operation.InlineVerify
-import sop.operation.Version
-
-/**
- * Implementation of the [SOPV] API subset using an external sopv/sop binary.
- *
- * Instantiate an [ExternalSOPV] object for the given binary and the given [TempDirProvider] using
- * empty environment variables.
- *
- * @param binaryName name / path of the sopv binary
- * @param tempDirProvider custom tempDirProvider
- */
-class ExternalSOPV(
-    private val binaryName: String,
-    private val properties: Properties = Properties(),
-    private val tempDirProvider: TempDirProvider = defaultTempDirProvider()
-) : SOPV {
-
-    override fun version(): Version = VersionExternal(binaryName, properties)
-
-    override fun detachedVerify(): DetachedVerify = DetachedVerifyExternal(binaryName, properties)
-
-    override fun inlineVerify(): InlineVerify =
-        InlineVerifyExternal(binaryName, properties, tempDirProvider)
-
-    companion object {
-
-        /**
-         * Default implementation of the [TempDirProvider] which stores temporary files in the
-         * systems temp dir ([Files.createTempDirectory]).
-         *
-         * @return default implementation
-         */
-        @JvmStatic
-        fun defaultTempDirProvider(): TempDirProvider {
-            return TempDirProvider { Files.createTempDirectory("ext-sopv").toFile() }
-        }
-    }
-}

external-sop/src/main/kotlin/sop/external/operation/ArmorExternal.kt

@@ -1,23 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external.operation
-
-import java.io.InputStream
-import java.util.Properties
-import sop.Ready
-import sop.exception.SOPGPException
-import sop.external.ExternalSOP
-import sop.operation.Armor
-
-/** Implementation of the [Armor] operation using an external SOP binary. */
-class ArmorExternal(binary: String, environment: Properties) : Armor {
-
-    private val commandList: MutableList<String> = mutableListOf(binary, "armor")
-    private val envList: List<String> = ExternalSOP.propertiesToEnv(environment)
-
-    @Throws(SOPGPException.BadData::class)
-    override fun data(data: InputStream): Ready =
-        ExternalSOP.executeTransformingOperation(Runtime.getRuntime(), commandList, envList, data)
-}

external-sop/src/main/kotlin/sop/external/operation/ChangeKeyPasswordExternal.kt

@@ -1,37 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external.operation
-
-import java.io.InputStream
-import java.util.Properties
-import sop.Ready
-import sop.external.ExternalSOP
-import sop.operation.ChangeKeyPassword
-
-/** Implementation of the [ChangeKeyPassword] operation using an external SOP binary. */
-class ChangeKeyPasswordExternal(binary: String, environment: Properties) : ChangeKeyPassword {
-
-    private val commandList: MutableList<String> = mutableListOf(binary, "change-key-password")
-    private val envList = ExternalSOP.propertiesToEnv(environment).toMutableList()
-
-    private var keyPasswordCounter = 0
-
-    override fun noArmor(): ChangeKeyPassword = apply { commandList.add("--no-armor") }
-
-    override fun oldKeyPassphrase(oldPassphrase: String): ChangeKeyPassword = apply {
-        commandList.add("--old-key-password=@ENV:KEY_PASSWORD_$keyPasswordCounter")
-        envList.add("KEY_PASSWORD_$keyPasswordCounter=$oldPassphrase")
-        keyPasswordCounter += 1
-    }
-
-    override fun newKeyPassphrase(newPassphrase: String): ChangeKeyPassword = apply {
-        commandList.add("--new-key-password=@ENV:KEY_PASSWORD_$keyPasswordCounter")
-        envList.add("KEY_PASSWORD_$keyPasswordCounter=$newPassphrase")
-        keyPasswordCounter += 1
-    }
-
-    override fun keys(keys: InputStream): Ready =
-        ExternalSOP.executeTransformingOperation(Runtime.getRuntime(), commandList, envList, keys)
-}

external-sop/src/main/kotlin/sop/external/operation/DearmorExternal.kt

@@ -1,20 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external.operation
-
-import java.io.InputStream
-import java.util.Properties
-import sop.Ready
-import sop.external.ExternalSOP
-import sop.operation.Dearmor
-
-/** Implementation of the [Dearmor] operation using an external SOP binary. */
-class DearmorExternal(binary: String, environment: Properties) : Dearmor {
-    private val commandList = listOf(binary, "dearmor")
-    private val envList = ExternalSOP.propertiesToEnv(environment)
-
-    override fun data(data: InputStream): Ready =
-        ExternalSOP.executeTransformingOperation(Runtime.getRuntime(), commandList, envList, data)
-}

external-sop/src/main/kotlin/sop/external/operation/DecryptExternal.kt

@@ -1,133 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external.operation
-
-import java.io.*
-import java.util.*
-import sop.DecryptionResult
-import sop.ReadyWithResult
-import sop.SessionKey
-import sop.Verification
-import sop.external.ExternalSOP
-import sop.external.ExternalSOP.Companion.finish
-import sop.external.ExternalSOP.Companion.readString
-import sop.operation.Decrypt
-import sop.util.UTCUtil
-
-/** Implementation of the [Decrypt] operation using an external SOP binary. */
-class DecryptExternal(
-    binary: String,
-    environment: Properties,
-    private val tempDirProvider: ExternalSOP.TempDirProvider
-) : Decrypt {
-
-    private val commandList = mutableListOf(binary, "decrypt")
-    private val envList = ExternalSOP.propertiesToEnv(environment).toMutableList()
-
-    private var argCounter = 0
-    private var requireVerification = false
-
-    override fun verifyNotBefore(timestamp: Date): Decrypt = apply {
-        commandList.add("--verify-not-before=${UTCUtil.formatUTCDate(timestamp)}")
-    }
-
-    override fun verifyNotAfter(timestamp: Date): Decrypt = apply {
-        commandList.add("--verify-not-after=${UTCUtil.formatUTCDate(timestamp)}")
-    }
-
-    override fun verifyWithCert(cert: InputStream): Decrypt = apply {
-        commandList.add("--verify-with=@ENV:VERIFY_WITH_$argCounter")
-        envList.add("VERIFY_WITH_$argCounter=${readString(cert)}")
-        argCounter += 1
-        requireVerification = true
-    }
-
-    override fun withSessionKey(sessionKey: SessionKey): Decrypt = apply {
-        commandList.add("--with-session-key=@ENV:SESSION_KEY_$argCounter")
-        envList.add("SESSION_KEY_$argCounter=$sessionKey")
-        argCounter += 1
-    }
-
-    override fun withPassword(password: String): Decrypt = apply {
-        commandList.add("--with-password=@ENV:PASSWORD_$argCounter")
-        envList.add("PASSWORD_$argCounter=$password")
-        argCounter += 1
-    }
-
-    override fun withKey(key: InputStream): Decrypt = apply {
-        commandList.add("@ENV:KEY_$argCounter")
-        envList.add("KEY_$argCounter=${readString(key)}")
-        argCounter += 1
-    }
-
-    override fun withKeyPassword(password: ByteArray): Decrypt = apply {
-        commandList.add("--with-key-password=@ENV:KEY_PASSWORD_$argCounter")
-        envList.add("KEY_PASSWORD_$argCounter=${String(password)}")
-        argCounter += 1
-    }
-
-    override fun ciphertext(ciphertext: InputStream): ReadyWithResult<DecryptionResult> {
-        val tempDir = tempDirProvider.provideTempDirectory()
-
-        val sessionKeyOut = File(tempDir, "session-key-out")
-        sessionKeyOut.delete()
-        commandList.add("--session-key-out=${sessionKeyOut.absolutePath}")
-
-        val verifyOut = File(tempDir, "verifications-out")
-        verifyOut.delete()
-        if (requireVerification) {
-            commandList.add("--verifications-out=${verifyOut.absolutePath}")
-        }
-
-        try {
-            val process =
-                Runtime.getRuntime().exec(commandList.toTypedArray(), envList.toTypedArray())
-            val processOut = process.outputStream
-            val processIn = process.inputStream
-
-            return object : ReadyWithResult<DecryptionResult>() {
-                override fun writeTo(outputStream: OutputStream): DecryptionResult {
-                    val buf = ByteArray(4096)
-                    var r: Int
-                    while (ciphertext.read(buf).also { r = it } > 0) {
-                        processOut.write(buf, 0, r)
-                    }
-
-                    ciphertext.close()
-                    processOut.close()
-
-                    while (processIn.read(buf).also { r = it } > 0) {
-                        outputStream.write(buf, 0, r)
-                    }
-
-                    processIn.close()
-                    outputStream.close()
-
-                    finish(process)
-
-                    val sessionKeyOutIn = FileInputStream(sessionKeyOut)
-                    var line: String? = readString(sessionKeyOutIn)
-                    val sessionKey = line?.let { l -> SessionKey.fromString(l.trim { it <= ' ' }) }
-                    sessionKeyOutIn.close()
-                    sessionKeyOut.delete()
-
-                    val verifications: MutableList<Verification> = ArrayList()
-                    if (requireVerification) {
-                        val verifyOutIn = FileInputStream(verifyOut)
-                        val reader = BufferedReader(InputStreamReader(verifyOutIn))
-                        while (reader.readLine().also { line = it } != null) {
-                            line?.let { verifications.add(Verification.fromString(it.trim())) }
-                        }
-                        reader.close()
-                    }
-
-                    return DecryptionResult(sessionKey, verifications)
-                }
-            }
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        }
-    }
-}

external-sop/src/main/kotlin/sop/external/operation/DetachedSignExternal.kt

@@ -1,104 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external.operation
-
-import java.io.*
-import java.util.*
-import sop.MicAlg
-import sop.ReadyWithResult
-import sop.SigningResult
-import sop.SigningResult.Companion.builder
-import sop.enums.SignAs
-import sop.external.ExternalSOP
-import sop.external.ExternalSOP.Companion.finish
-import sop.operation.DetachedSign
-
-/** Implementation of the [DetachedSign] operation using an external SOP binary. */
-class DetachedSignExternal(
-    binary: String,
-    environment: Properties,
-    private val tempDirProvider: ExternalSOP.TempDirProvider
-) : DetachedSign {
-
-    private val commandList = mutableListOf(binary, "sign")
-    private val envList = ExternalSOP.propertiesToEnv(environment).toMutableList()
-
-    private var argCounter = 0
-
-    override fun mode(mode: SignAs): DetachedSign = apply { commandList.add("--as=$mode") }
-
-    override fun data(data: InputStream): ReadyWithResult<SigningResult> {
-        val tempDir = tempDirProvider.provideTempDirectory()
-        val micAlgOut = File(tempDir, "micAlgOut")
-        micAlgOut.delete()
-        commandList.add("--micalg-out=${micAlgOut.absolutePath}")
-
-        try {
-            val process =
-                Runtime.getRuntime().exec(commandList.toTypedArray(), envList.toTypedArray())
-            val processOut = process.outputStream
-            val processIn = process.inputStream
-
-            return object : ReadyWithResult<SigningResult>() {
-                override fun writeTo(outputStream: OutputStream): SigningResult {
-                    val buf = ByteArray(4096)
-                    var r: Int
-                    while (data.read(buf).also { r = it } > 0) {
-                        processOut.write(buf, 0, r)
-                    }
-
-                    data.close()
-                    try {
-                        processOut.close()
-                    } catch (e: IOException) {
-                        // Ignore Stream closed
-                        if ("Stream closed" != e.message) {
-                            throw e
-                        }
-                    }
-
-                    while (processIn.read(buf).also { r = it } > 0) {
-                        outputStream.write(buf, 0, r)
-                    }
-
-                    processIn.close()
-                    outputStream.close()
-
-                    finish(process)
-
-                    val builder = builder()
-                    if (micAlgOut.exists()) {
-                        val reader = BufferedReader(InputStreamReader(FileInputStream(micAlgOut)))
-                        val line = reader.readLine()
-                        if (line != null && line.isNotBlank()) {
-                            val micAlg = MicAlg(line.trim())
-                            builder.setMicAlg(micAlg)
-                        }
-                        reader.close()
-                        micAlgOut.delete()
-                    }
-
-                    return builder.build()
-                }
-            }
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        }
-    }
-
-    override fun noArmor(): DetachedSign = apply { commandList.add("--no-armor") }
-
-    override fun key(key: InputStream): DetachedSign = apply {
-        commandList.add("@ENV:KEY_$argCounter")
-        envList.add("KEY_$argCounter=${ExternalSOP.readString(key)}")
-        argCounter += 1
-    }
-
-    override fun withKeyPassword(password: ByteArray): DetachedSign = apply {
-        commandList.add("--with-key-password=@ENV:WITH_KEY_PASSWORD_$argCounter")
-        envList.add("WITH_KEY_PASSWORD_$argCounter=${String(password)}")
-        argCounter += 1
-    }
-}

external-sop/src/main/kotlin/sop/external/operation/DetachedVerifyExternal.kt

@@ -1,90 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external.operation
-
-import java.io.BufferedReader
-import java.io.IOException
-import java.io.InputStream
-import java.io.InputStreamReader
-import java.util.*
-import sop.Verification
-import sop.Verification.Companion.fromString
-import sop.exception.SOPGPException
-import sop.external.ExternalSOP
-import sop.external.ExternalSOP.Companion.finish
-import sop.operation.DetachedVerify
-import sop.operation.VerifySignatures
-import sop.util.UTCUtil
-
-/** Implementation of the [DetachedVerify] operation using an external SOP binary. */
-class DetachedVerifyExternal(binary: String, environment: Properties) : DetachedVerify {
-
-    private val commandList = mutableListOf(binary, "verify")
-    private val envList = ExternalSOP.propertiesToEnv(environment).toMutableList()
-
-    private var signatures: InputStream? = null
-    private val certs: MutableSet<InputStream> = mutableSetOf()
-    private var argCounter = 0
-
-    override fun signatures(signatures: InputStream): VerifySignatures = apply {
-        this.signatures = signatures
-    }
-
-    override fun notBefore(timestamp: Date): DetachedVerify = apply {
-        commandList.add("--not-before=${UTCUtil.formatUTCDate(timestamp)}")
-    }
-
-    override fun notAfter(timestamp: Date): DetachedVerify = apply {
-        commandList.add("--not-after=${UTCUtil.formatUTCDate(timestamp)}")
-    }
-
-    override fun cert(cert: InputStream): DetachedVerify = apply { this.certs.add(cert) }
-
-    override fun data(data: InputStream): List<Verification> {
-        // Signature
-        if (signatures == null) {
-            throw SOPGPException.MissingArg("Missing argument: signatures cannot be null.")
-        }
-        commandList.add("@ENV:SIGNATURE")
-        envList.add("SIGNATURE=${ExternalSOP.readString(signatures!!)}")
-
-        // Certs
-        for (cert in certs) {
-            commandList.add("@ENV:CERT_$argCounter")
-            envList.add("CERT_$argCounter=${ExternalSOP.readString(cert)}")
-            argCounter += 1
-        }
-
-        try {
-            val process =
-                Runtime.getRuntime().exec(commandList.toTypedArray(), envList.toTypedArray())
-            val processOut = process.outputStream
-            val processIn = process.inputStream
-
-            val buf = ByteArray(4096)
-            var r: Int
-            while (data.read(buf).also { r = it } > 0) {
-                processOut.write(buf, 0, r)
-            }
-
-            data.close()
-            processOut.close()
-
-            val bufferedReader = BufferedReader(InputStreamReader(processIn))
-            val verifications: MutableList<Verification> = ArrayList()
-
-            var line: String?
-            while (bufferedReader.readLine().also { line = it } != null) {
-                verifications.add(fromString(line!!))
-            }
-
-            finish(process)
-
-            return verifications
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        }
-    }
-}

external-sop/src/main/kotlin/sop/external/operation/EncryptExternal.kt

@@ -1,111 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external.operation
-
-import java.io.File
-import java.io.FileInputStream
-import java.io.IOException
-import java.io.InputStream
-import java.io.OutputStream
-import java.util.*
-import sop.EncryptionResult
-import sop.ReadyWithResult
-import sop.SessionKey.Companion.fromString
-import sop.enums.EncryptAs
-import sop.external.ExternalSOP
-import sop.external.ExternalSOP.Companion.finish
-import sop.external.ExternalSOP.Companion.readString
-import sop.operation.Encrypt
-
-/** Implementation of the [Encrypt] operation using an external SOP binary. */
-class EncryptExternal(
-    binary: String,
-    environment: Properties,
-    private val tempDirProvider: ExternalSOP.TempDirProvider
-) : Encrypt {
-
-    private val commandList = mutableListOf(binary, "encrypt")
-    private val envList = ExternalSOP.propertiesToEnv(environment).toMutableList()
-
-    private var argCounter = 0
-
-    override fun noArmor(): Encrypt = apply { commandList.add("--no-armor") }
-
-    override fun mode(mode: EncryptAs): Encrypt = apply { commandList.add("--as=$mode") }
-
-    override fun signWith(key: InputStream): Encrypt = apply {
-        commandList.add("--sign-with=@ENV:SIGN_WITH_$argCounter")
-        envList.add("SIGN_WITH_$argCounter=${ExternalSOP.readString(key)}")
-        argCounter += 1
-    }
-
-    override fun withKeyPassword(password: ByteArray): Encrypt = apply {
-        commandList.add("--with-key-password=@ENV:KEY_PASSWORD_$argCounter")
-        envList.add("KEY_PASSWORD_$argCounter=${String(password)}")
-        argCounter += 1
-    }
-
-    override fun withPassword(password: String): Encrypt = apply {
-        commandList.add("--with-password=@ENV:PASSWORD_$argCounter")
-        envList.add("PASSWORD_$argCounter=$password")
-        argCounter += 1
-    }
-
-    override fun withCert(cert: InputStream): Encrypt = apply {
-        commandList.add("@ENV:CERT_$argCounter")
-        envList.add("CERT_$argCounter=${readString(cert)}")
-        argCounter += 1
-    }
-
-    override fun profile(profileName: String): Encrypt = apply {
-        commandList.add("--profile=$profileName")
-    }
-
-    override fun plaintext(plaintext: InputStream): ReadyWithResult<EncryptionResult> {
-        val tempDir = tempDirProvider.provideTempDirectory()
-
-        val sessionKeyOut = File(tempDir, "session-key-out")
-        sessionKeyOut.delete()
-        commandList.add("--session-key-out=${sessionKeyOut.absolutePath}")
-        try {
-            val process =
-                Runtime.getRuntime().exec(commandList.toTypedArray(), envList.toTypedArray())
-            val processOut = process.outputStream
-            val processIn = process.inputStream
-
-            return object : ReadyWithResult<EncryptionResult>() {
-                override fun writeTo(outputStream: OutputStream): EncryptionResult {
-                    val buf = ByteArray(4096)
-                    var r: Int
-                    while (plaintext.read(buf).also { r = it } > 0) {
-                        processOut.write(buf, 0, r)
-                    }
-
-                    plaintext.close()
-                    processOut.close()
-
-                    while (processIn.read(buf).also { r = it } > 0) {
-                        outputStream.write(buf, 0, r)
-                    }
-
-                    processIn.close()
-                    outputStream.close()
-
-                    finish(process)
-
-                    val sessionKeyOutIn = FileInputStream(sessionKeyOut)
-                    val line = readString(sessionKeyOutIn)
-                    val sessionKey = fromString(line.trim())
-                    sessionKeyOutIn.close()
-                    sessionKeyOut.delete()
-
-                    return EncryptionResult(sessionKey)
-                }
-            }
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        }
-    }
-}

external-sop/src/main/kotlin/sop/external/operation/ExtractCertExternal.kt

@@ -1,24 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external.operation
-
-import java.io.InputStream
-import java.util.Properties
-import sop.Ready
-import sop.external.ExternalSOP
-import sop.operation.ExtractCert
-
-/** Implementation of the [ExtractCert] operation using an external SOP binary. */
-class ExtractCertExternal(binary: String, environment: Properties) : ExtractCert {
-
-    private val commandList = mutableListOf(binary, "extract-cert")
-    private val envList = ExternalSOP.propertiesToEnv(environment)
-
-    override fun noArmor(): ExtractCert = apply { commandList.add("--no-armor") }
-
-    override fun key(keyInputStream: InputStream): Ready =
-        ExternalSOP.executeTransformingOperation(
-            Runtime.getRuntime(), commandList, envList, keyInputStream)
-}

external-sop/src/main/kotlin/sop/external/operation/GenerateKeyExternal.kt

@@ -1,38 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external.operation
-
-import java.util.Properties
-import sop.Ready
-import sop.external.ExternalSOP
-import sop.operation.GenerateKey
-
-/** Implementation of the [GenerateKey] operation using an external SOP binary. */
-class GenerateKeyExternal(binary: String, environment: Properties) : GenerateKey {
-
-    private val commandList = mutableListOf(binary, "generate-key")
-    private val envList = ExternalSOP.propertiesToEnv(environment).toMutableList()
-
-    private var argCounter = 0
-
-    override fun noArmor(): GenerateKey = apply { commandList.add("--no-armor") }
-
-    override fun userId(userId: String): GenerateKey = apply { commandList.add(userId) }
-
-    override fun withKeyPassword(password: String): GenerateKey = apply {
-        commandList.add("--with-key-password=@ENV:KEY_PASSWORD_$argCounter")
-        envList.add("KEY_PASSWORD_$argCounter=$password")
-        argCounter += 1
-    }
-
-    override fun profile(profile: String): GenerateKey = apply {
-        commandList.add("--profile=$profile")
-    }
-
-    override fun signingOnly(): GenerateKey = apply { commandList.add("--signing-only") }
-
-    override fun generate(): Ready =
-        ExternalSOP.executeProducingOperation(Runtime.getRuntime(), commandList, envList)
-}

external-sop/src/main/kotlin/sop/external/operation/InlineDetachExternal.kt

@@ -1,82 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external.operation
-
-import java.io.*
-import java.util.*
-import sop.ReadyWithResult
-import sop.Signatures
-import sop.external.ExternalSOP
-import sop.external.ExternalSOP.Companion.finish
-import sop.operation.InlineDetach
-
-/** Implementation of the [InlineDetach] operation using an external SOP binary. */
-class InlineDetachExternal(
-    binary: String,
-    environment: Properties,
-    private val tempDirProvider: ExternalSOP.TempDirProvider
-) : InlineDetach {
-
-    private val commandList = mutableListOf(binary, "inline-detach")
-    private val envList = ExternalSOP.propertiesToEnv(environment)
-
-    override fun noArmor(): InlineDetach = apply { commandList.add("--no-armor") }
-
-    override fun message(messageInputStream: InputStream): ReadyWithResult<Signatures> {
-        val tempDir = tempDirProvider.provideTempDirectory()
-
-        val signaturesOut = File(tempDir, "signatures")
-        signaturesOut.delete()
-        commandList.add("--signatures-out=${signaturesOut.absolutePath}")
-
-        try {
-            val process =
-                Runtime.getRuntime().exec(commandList.toTypedArray(), envList.toTypedArray())
-            val processOut = process.outputStream
-            val processIn = process.inputStream
-
-            return object : ReadyWithResult<Signatures>() {
-                override fun writeTo(outputStream: OutputStream): Signatures {
-                    val buf = ByteArray(4096)
-                    var r: Int
-                    while (messageInputStream.read(buf).also { r = it } > 0) {
-                        processOut.write(buf, 0, r)
-                    }
-
-                    messageInputStream.close()
-                    processOut.close()
-
-                    while (processIn.read(buf).also { r = it } > 0) {
-                        outputStream.write(buf, 0, r)
-                    }
-
-                    processIn.close()
-                    outputStream.close()
-
-                    finish(process)
-
-                    val signaturesOutIn = FileInputStream(signaturesOut)
-                    val signaturesBuffer = ByteArrayOutputStream()
-                    while (signaturesOutIn.read(buf).also { r = it } > 0) {
-                        signaturesBuffer.write(buf, 0, r)
-                    }
-                    signaturesOutIn.close()
-                    signaturesOut.delete()
-
-                    val sigBytes = signaturesBuffer.toByteArray()
-
-                    return object : Signatures() {
-                        @Throws(IOException::class)
-                        override fun writeTo(outputStream: OutputStream) {
-                            outputStream.write(sigBytes)
-                        }
-                    }
-                }
-            }
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        }
-    }
-}

external-sop/src/main/kotlin/sop/external/operation/InlineSignExternal.kt

@@ -1,40 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external.operation
-
-import java.io.InputStream
-import java.util.Properties
-import sop.Ready
-import sop.enums.InlineSignAs
-import sop.external.ExternalSOP
-import sop.operation.InlineSign
-
-/** Implementation of the [InlineSign] operation using an external SOP binary. */
-class InlineSignExternal(binary: String, environment: Properties) : InlineSign {
-
-    private val commandList = mutableListOf(binary, "inline-sign")
-    private val envList = ExternalSOP.propertiesToEnv(environment).toMutableList()
-
-    private var argCounter = 0
-
-    override fun mode(mode: InlineSignAs): InlineSign = apply { commandList.add("--as=$mode") }
-
-    override fun data(data: InputStream): Ready =
-        ExternalSOP.executeTransformingOperation(Runtime.getRuntime(), commandList, envList, data)
-
-    override fun noArmor(): InlineSign = apply { commandList.add("--no-armor") }
-
-    override fun key(key: InputStream): InlineSign = apply {
-        commandList.add("@ENV:KEY_$argCounter")
-        envList.add("KEY_$argCounter=${ExternalSOP.readString(key)}")
-        argCounter += 1
-    }
-
-    override fun withKeyPassword(password: ByteArray): InlineSign = apply {
-        commandList.add("--with-key-password=@ENV:WITH_KEY_PASSWORD_$argCounter")
-        envList.add("WITH_KEY_PASSWORD_$argCounter=${String(password)}")
-        argCounter += 1
-    }
-}

external-sop/src/main/kotlin/sop/external/operation/InlineVerifyExternal.kt

@@ -1,91 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external.operation
-
-import java.io.*
-import java.util.*
-import sop.ReadyWithResult
-import sop.Verification
-import sop.Verification.Companion.fromString
-import sop.external.ExternalSOP
-import sop.external.ExternalSOP.Companion.finish
-import sop.operation.InlineVerify
-import sop.util.UTCUtil
-
-/** Implementation of the [InlineVerify] operation using an external SOP binary. */
-class InlineVerifyExternal(
-    binary: String,
-    environment: Properties,
-    private val tempDirProvider: ExternalSOP.TempDirProvider
-) : InlineVerify {
-
-    private val commandList = mutableListOf(binary, "inline-verify")
-    private val envList = ExternalSOP.propertiesToEnv(environment).toMutableList()
-
-    private var argCounter = 0
-
-    override fun data(data: InputStream): ReadyWithResult<List<Verification>> {
-        val tempDir = tempDirProvider.provideTempDirectory()
-
-        val verificationsOut = File(tempDir, "verifications-out")
-        verificationsOut.delete()
-        commandList.add("--verifications-out=${verificationsOut.absolutePath}")
-
-        try {
-            val process =
-                Runtime.getRuntime().exec(commandList.toTypedArray(), envList.toTypedArray())
-            val processOut = process.outputStream
-            val processIn = process.inputStream
-
-            return object : ReadyWithResult<List<Verification>>() {
-                override fun writeTo(outputStream: OutputStream): List<Verification> {
-                    val buf = ByteArray(4096)
-                    var r: Int
-                    while (data.read(buf).also { r = it } > 0) {
-                        processOut.write(buf, 0, r)
-                    }
-
-                    data.close()
-                    processOut.close()
-
-                    while (processIn.read(buf).also { r = it } > 0) {
-                        outputStream.write(buf, 0, r)
-                    }
-
-                    processIn.close()
-                    outputStream.close()
-
-                    finish(process)
-
-                    val verificationsOutIn = FileInputStream(verificationsOut)
-                    val reader = BufferedReader(InputStreamReader(verificationsOutIn))
-                    val verificationList: MutableList<Verification> = mutableListOf()
-                    var line: String?
-                    while (reader.readLine().also { line = it } != null) {
-                        verificationList.add(fromString(line!!.trim()))
-                    }
-
-                    return verificationList
-                }
-            }
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        }
-    }
-
-    override fun notBefore(timestamp: Date): InlineVerify = apply {
-        commandList.add("--not-before=${UTCUtil.formatUTCDate(timestamp)}")
-    }
-
-    override fun notAfter(timestamp: Date): InlineVerify = apply {
-        commandList.add("--not-after=${UTCUtil.formatUTCDate(timestamp)}")
-    }
-
-    override fun cert(cert: InputStream): InlineVerify = apply {
-        commandList.add("@ENV:CERT_$argCounter")
-        envList.add("CERT_$argCounter=${ExternalSOP.readString(cert)}")
-        argCounter += 1
-    }
-}

external-sop/src/main/kotlin/sop/external/operation/ListProfilesExternal.kt

@@ -1,36 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external.operation
-
-import java.io.IOException
-import java.util.Properties
-import sop.Profile
-import sop.external.ExternalSOP
-import sop.operation.ListProfiles
-
-/** Implementation of the [ListProfiles] operation using an external SOP binary. */
-class ListProfilesExternal(binary: String, environment: Properties) : ListProfiles {
-
-    private val commandList = mutableListOf(binary, "list-profiles")
-    private val envList = ExternalSOP.propertiesToEnv(environment)
-
-    override fun subcommand(command: String): List<Profile> {
-        return try {
-            String(
-                    ExternalSOP.executeProducingOperation(
-                            Runtime.getRuntime(), commandList.plus(command), envList)
-                        .bytes)
-                .let { toProfiles(it) }
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        }
-    }
-
-    companion object {
-        @JvmStatic
-        private fun toProfiles(output: String): List<Profile> =
-            output.split("\n").filter { it.isNotBlank() }.map { Profile.parse(it) }
-    }
-}

external-sop/src/main/kotlin/sop/external/operation/RevokeKeyExternal.kt

@@ -1,31 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external.operation
-
-import java.io.InputStream
-import java.util.Properties
-import sop.Ready
-import sop.external.ExternalSOP
-import sop.operation.RevokeKey
-
-/** Implementation of the [RevokeKey] operation using an external SOP binary. */
-class RevokeKeyExternal(binary: String, environment: Properties) : RevokeKey {
-
-    private val commandList = mutableListOf(binary, "revoke-key")
-    private val envList = ExternalSOP.propertiesToEnv(environment).toMutableList()
-
-    private var argCount = 0
-
-    override fun noArmor(): RevokeKey = apply { commandList.add("--no-armor") }
-
-    override fun withKeyPassword(password: ByteArray): RevokeKey = apply {
-        commandList.add("--with-key-password=@ENV:KEY_PASSWORD_$argCount")
-        envList.add("KEY_PASSWORD_$argCount=${String(password)}")
-        argCount += 1
-    }
-
-    override fun keys(keys: InputStream): Ready =
-        ExternalSOP.executeTransformingOperation(Runtime.getRuntime(), commandList, envList, keys)
-}

external-sop/src/main/kotlin/sop/external/operation/VersionExternal.kt

@@ -1,102 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.external.operation
-
-import java.io.IOException
-import java.util.Properties
-import sop.external.ExternalSOP
-import sop.operation.Version
-
-/** Implementation of the [Version] operation using an external SOP binary. */
-class VersionExternal(binary: String, environment: Properties) : Version {
-
-    private val commandList = listOf(binary, "version")
-    private val envList = ExternalSOP.propertiesToEnv(environment)
-
-    override fun getName(): String {
-        val info = executeForLine(commandList)
-        return if (info.contains(" ")) {
-            info.substring(0, info.lastIndexOf(" "))
-        } else {
-            info
-        }
-    }
-
-    override fun getVersion(): String {
-        val info = executeForLine(commandList)
-        return if (info.contains(" ")) {
-            info.substring(info.lastIndexOf(" ") + 1)
-        } else {
-            info
-        }
-    }
-
-    override fun getBackendVersion(): String {
-        return executeForLines(commandList.plus("--backend"))
-    }
-
-    override fun getExtendedVersion(): String {
-        return executeForLines(commandList.plus("--extended"))
-    }
-
-    override fun getSopSpecRevisionNumber(): Int {
-        val revision = getSopSpecVersion()
-        val firstLine =
-            if (revision.contains("\n")) {
-                revision.substring(0, revision.indexOf("\n"))
-            } else {
-                revision
-            }
-
-        if (!firstLine.contains("-")) {
-            return -1
-        }
-        return Integer.parseInt(firstLine.substring(firstLine.lastIndexOf("-") + 1))
-    }
-
-    override fun isSopSpecImplementationIncomplete(): Boolean {
-        return getSopSpecVersion().startsWith("~")
-    }
-
-    override fun getSopSpecImplementationRemarks(): String? {
-        val revision = getSopSpecVersion()
-        if (revision.contains("\n")) {
-            revision.substring(revision.indexOf("\n")).trim().takeIf { it.isNotBlank() }
-        }
-        return null
-    }
-
-    override fun getSopVVersion(): String {
-        return executeForLines(commandList.plus("--sopv"))
-    }
-
-    override fun getSopSpecVersion(): String {
-        return executeForLines(commandList.plus("--sop-spec"))
-    }
-
-    private fun executeForLine(commandList: List<String>): String {
-        return try {
-            val process =
-                Runtime.getRuntime().exec(commandList.toTypedArray(), envList.toTypedArray())
-            val result = process.inputStream.bufferedReader().readLine()
-            ExternalSOP.finish(process)
-            result.trim()
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        }
-    }
-
-    private fun executeForLines(commandList: List<String>): String {
-        return try {
-            val process =
-                Runtime.getRuntime().exec(commandList.toTypedArray(), envList.toTypedArray())
-            val result = process.inputStream.bufferedReader().readLines().joinToString("\n")
-            ExternalSOP.finish(process)
-            result.trim()
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        }
-    }
-}

external-sop/src/main/resources/sop/testsuite/external/.gitignore

@@ -1,5 +0,0 @@
-# SPDX-FileCopyrightText: 2023 Paul Schaub <info@pgpainless.org>
-#
-# SPDX-License-Identifier: CC0-1.0
-
-config.json

external-sop/src/main/resources/sop/testsuite/external/config.json.ci

@@ -1,8 +0,0 @@
-{
-    "backends": [
-        {
-            "name": "Sequoia-SOP",
-            "sop": "/usr/bin/sqop"
-        }
-    ]
-}

external-sop/src/main/resources/sop/testsuite/external/config.json.example

@@ -1,17 +0,0 @@
-{
-    "backends": [
-        {
-            "name": "Example-SOP",
-            "sop": "/usr/bin/example-sop"
-        },
-        {
-            "name": "Awesome-SOP",
-            "sop": "/usr/local/bin/awesome-sop",
-            "env": [
-                {
-                    "key": "myEnvironmentVariable", "value": "FooBar"
-                }
-            ]
-        }
-    ]
-}

external-sop/src/test/java/sop/testsuite/external/ExternalSOPInstanceFactory.java

@@ -1,80 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.testsuite.external;
-
-import com.google.gson.Gson;
-import sop.SOP;
-import sop.external.ExternalSOP;
-import sop.testsuite.SOPInstanceFactory;
-
-import java.io.File;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Properties;
-
-/**
- * This implementation of {@link SOPInstanceFactory} reads the JSON file at
- * <pre>external-sop/src/main/resources/sop/testsuite/external/config.json</pre>
- * to determine configured external test backends.
- */
-public class ExternalSOPInstanceFactory extends SOPInstanceFactory {
-
-    @Override
-    public Map<String, SOP> provideSOPInstances() {
-        Map<String, SOP> backends = new HashMap<>();
-        TestSuite suite = readConfiguration();
-        if (suite != null && !suite.backends.isEmpty()) {
-            for (TestSubject subject : suite.backends) {
-                if (!new File(subject.sop).exists()) {
-                    continue;
-                }
-
-                Properties env = new Properties();
-                if (subject.env != null) {
-                    for (Var var : subject.env) {
-                        env.put(var.key, var.value);
-                    }
-                }
-
-                SOP sop = new ExternalSOP(subject.sop, env);
-                backends.put(subject.name, sop);
-            }
-        }
-        return backends;
-    }
-
-
-    public static TestSuite readConfiguration() {
-        Gson gson = new Gson();
-        InputStream inputStream = ExternalSOPInstanceFactory.class.getResourceAsStream("config.json");
-        if (inputStream == null) {
-            return null;
-        }
-
-        InputStreamReader reader = new InputStreamReader(inputStream);
-        return gson.fromJson(reader, TestSuite.class);
-    }
-
-
-    // JSON DTOs
-
-    public static class TestSuite {
-        List<TestSubject> backends;
-    }
-
-    public static class TestSubject {
-        String name;
-        String sop;
-        List<Var> env;
-    }
-
-    public static class Var {
-        String key;
-        String value;
-    }
-}

external-sop/src/test/java/sop/testsuite/external/operation/ExternalArmorDearmorTest.java

@@ -1,13 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.testsuite.external.operation;
-
-import org.junit.jupiter.api.condition.EnabledIf;
-import sop.testsuite.operation.ArmorDearmorTest;
-
-@EnabledIf("sop.testsuite.operation.AbstractSOPTest#hasBackends")
-public class ExternalArmorDearmorTest extends ArmorDearmorTest {
-
-}

external-sop/src/test/java/sop/testsuite/external/operation/ExternalDecryptWithSessionKeyTest.java

@@ -1,13 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.testsuite.external.operation;
-
-import org.junit.jupiter.api.condition.EnabledIf;
-import sop.testsuite.operation.DecryptWithSessionKeyTest;
-
-@EnabledIf("sop.testsuite.operation.AbstractSOPTest#hasBackends")
-public class ExternalDecryptWithSessionKeyTest extends DecryptWithSessionKeyTest {
-
-}

external-sop/src/test/java/sop/testsuite/external/operation/ExternalDetachedSignDetachedVerifyTest.java

@@ -1,12 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.testsuite.external.operation;
-
-import org.junit.jupiter.api.condition.EnabledIf;
-import sop.testsuite.operation.DetachedSignDetachedVerifyTest;
-
-@EnabledIf("sop.testsuite.operation.AbstractSOPTest#hasBackends")
-public class ExternalDetachedSignDetachedVerifyTest extends DetachedSignDetachedVerifyTest {
-}

external-sop/src/test/java/sop/testsuite/external/operation/ExternalEncryptDecryptTest.java

@@ -1,13 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.testsuite.external.operation;
-
-import org.junit.jupiter.api.condition.EnabledIf;
-import sop.testsuite.operation.EncryptDecryptTest;
-
-@EnabledIf("sop.testsuite.operation.AbstractSOPTest#hasBackends")
-public class ExternalEncryptDecryptTest extends EncryptDecryptTest {
-
-}

external-sop/src/test/java/sop/testsuite/external/operation/ExternalExtractCertTest.java

@@ -1,13 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.testsuite.external.operation;
-
-import org.junit.jupiter.api.condition.EnabledIf;
-import sop.testsuite.operation.ExtractCertTest;
-
-@EnabledIf("sop.testsuite.operation.AbstractSOPTest#hasBackends")
-public class ExternalExtractCertTest extends ExtractCertTest {
-
-}

external-sop/src/test/java/sop/testsuite/external/operation/ExternalGenerateKeyTest.java

@@ -1,13 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.testsuite.external.operation;
-
-import org.junit.jupiter.api.condition.EnabledIf;
-import sop.testsuite.operation.GenerateKeyTest;
-
-@EnabledIf("sop.testsuite.operation.AbstractSOPTest#hasBackends")
-public class ExternalGenerateKeyTest extends GenerateKeyTest {
-
-}

external-sop/src/test/java/sop/testsuite/external/operation/ExternalInlineSignInlineDetachDetachedVerifyTest.java

@@ -1,14 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.testsuite.external.operation;
-
-import org.junit.jupiter.api.condition.EnabledIf;
-import sop.testsuite.operation.InlineSignInlineDetachDetachedVerifyTest;
-
-@EnabledIf("sop.testsuite.operation.AbstractSOPTest#hasBackends")
-public class ExternalInlineSignInlineDetachDetachedVerifyTest
-        extends InlineSignInlineDetachDetachedVerifyTest {
-
-}

external-sop/src/test/java/sop/testsuite/external/operation/ExternalInlineSignInlineVerifyTest.java

@@ -1,13 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.testsuite.external.operation;
-
-import org.junit.jupiter.api.condition.EnabledIf;
-import sop.testsuite.operation.InlineSignInlineVerifyTest;
-
-@EnabledIf("sop.testsuite.operation.AbstractSOPTest#hasBackends")
-public class ExternalInlineSignInlineVerifyTest extends InlineSignInlineVerifyTest {
-
-}

external-sop/src/test/java/sop/testsuite/external/operation/ExternalListProfilesTest.java

@@ -1,13 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.testsuite.external.operation;
-
-import org.junit.jupiter.api.condition.EnabledIf;
-import sop.testsuite.operation.ListProfilesTest;
-
-@EnabledIf("sop.testsuite.operation.AbstractSOPTest#hasBackends")
-public class ExternalListProfilesTest extends ListProfilesTest {
-
-}

external-sop/src/test/java/sop/testsuite/external/operation/ExternalRevokeKeyTest.java

@@ -1,13 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.testsuite.external.operation;
-
-import org.junit.jupiter.api.condition.EnabledIf;
-import sop.testsuite.operation.RevokeKeyTest;
-
-@EnabledIf("sop.testsuite.operation.AbstractSOPTest#hasBackends")
-public class ExternalRevokeKeyTest extends RevokeKeyTest {
-
-}

external-sop/src/test/java/sop/testsuite/external/operation/ExternalVersionTest.java

@@ -1,13 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.testsuite.external.operation;
-
-import org.junit.jupiter.api.condition.EnabledIf;
-import sop.testsuite.operation.VersionTest;
-
-@EnabledIf("sop.testsuite.operation.AbstractSOPTest#hasBackends")
-public class ExternalVersionTest extends VersionTest {
-
-}

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -1,7 +1,7 @@
-#!/bin/sh
+#!/usr/bin/env sh
 
 #
-# Copyright © 2015-2021 the original authors.
+# Copyright 2015 the original author or authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -17,101 +17,67 @@
 #
 
 ##############################################################################
-#
-#   Gradle start up script for POSIX generated by Gradle.
-#
-#   Important for running:
-#
-#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
-#       noncompliant, but you have some other compliant shell such as ksh or
-#       bash, then to run this script, type that shell name before the whole
-#       command line, like:
-#
-#           ksh Gradle
-#
-#       Busybox and similar reduced shells will NOT work, because this script
-#       requires all of these POSIX shell features:
-#         * functions;
-#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
-#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
-#         * compound commands having a testable exit status, especially «case»;
-#         * various built-in commands including «command», «set», and «ulimit».
-#
-#   Important for patching:
-#
-#   (2) This script targets any POSIX shell, so it avoids extensions provided
-#       by Bash, Ksh, etc; in particular arrays are avoided.
-#
-#       The "traditional" practice of packing multiple parameters into a
-#       space-separated string is a well documented source of bugs and security
-#       problems, so this is (mostly) avoided, by progressively accumulating
-#       options in "$@", and eventually passing that to Java.
-#
-#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
-#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
-#       see the in-line comments for details.
-#
-#       There are tweaks for specific operating systems such as AIX, CygWin,
-#       Darwin, MinGW, and NonStop.
-#
-#   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
-#       within the Gradle project.
-#
-#       You can find Gradle at https://github.com/gradle/gradle/.
-#
+##
+##  Gradle start up script for UN*X
+##
 ##############################################################################
 
 # Attempt to set APP_HOME
-
 # Resolve links: $0 may be a link
-app_path=$0
-
-# Need this for daisy-chained symlinks.
-while
-    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
-    [ -h "$app_path" ]
-do
-    ls=$( ls -ld "$app_path" )
-    link=${ls#*' -> '}
-    case $link in             #(
-      /*)   app_path=$link ;; #(
-      *)    app_path=$APP_HOME$link ;;
-    esac
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
 done
-
-APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
-APP_BASE_NAME=${0##*/}
+APP_BASE_NAME=`basename "$0"`
 
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
-MAX_FD=maximum
+MAX_FD="maximum"
 
 warn () {
     echo "$*"
-} >&2
+}
 
 die () {
     echo
     echo "$*"
     echo
     exit 1
-} >&2
+}
 
 # OS specific support (must be 'true' or 'false').
 cygwin=false
 msys=false
 darwin=false
 nonstop=false
-case "$( uname )" in                #(
-  CYGWIN* )         cygwin=true  ;; #(
-  Darwin* )         darwin=true  ;; #(
-  MSYS* | MINGW* )  msys=true    ;; #(
-  NONSTOP* )        nonstop=true ;;
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MSYS* | MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
@@ -121,9 +87,9 @@ CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 if [ -n "$JAVA_HOME" ] ; then
     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
         # IBM's JDK on AIX uses strange locations for the executables
-        JAVACMD=$JAVA_HOME/jre/sh/java
+        JAVACMD="$JAVA_HOME/jre/sh/java"
     else
-        JAVACMD=$JAVA_HOME/bin/java
+        JAVACMD="$JAVA_HOME/bin/java"
     fi
     if [ ! -x "$JAVACMD" ] ; then
         die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
@@ -132,7 +98,7 @@ Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
     fi
 else
-    JAVACMD=java
+    JAVACMD="java"
     which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 
 Please set the JAVA_HOME variable in your environment to match the
@@ -140,95 +106,80 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
-    case $MAX_FD in #(
-      max*)
-        MAX_FD=$( ulimit -H -n ) ||
-            warn "Could not query maximum file descriptor limit"
-    esac
-    case $MAX_FD in  #(
-      '' | soft) :;; #(
-      *)
-        ulimit -n "$MAX_FD" ||
-            warn "Could not set maximum file descriptor limit to $MAX_FD"
-    esac
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
 fi
 
-# Collect all arguments for the java command, stacking in reverse order:
-#   * args from the command line
-#   * the main class name
-#   * -classpath
-#   * -D...appname settings
-#   * --module-path (only if needed)
-#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
 
 # For Cygwin or MSYS, switch paths to Windows format before running java
-if "$cygwin" || "$msys" ; then
-    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
-    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
 
-    JAVACMD=$( cygpath --unix "$JAVACMD" )
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
-    # Now convert the arguments - kludge to limit ourselves to /bin/sh
-    for arg do
-        if
-            case $arg in                                #(
-              -*)   false ;;                            # don't mess with options #(
-              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
-                    [ -e "$t" ] ;;                      #(
-              *)    false ;;
-            esac
-        then
-            arg=$( cygpath --path --ignore --mixed "$arg" )
-        fi
-        # Roll the args list around exactly as many times as the number of
-        # args, so each arg winds up back in the position where it started, but
-        # possibly modified.
-        #
-        # NB: a `for` loop captures its iteration list before it begins, so
-        # changing the positional parameters here affects neither the number of
-        # iterations, nor the values presented in `arg`.
-        shift                   # remove old arg
-        set -- "$@" "$arg"      # push replacement arg
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
     done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
 fi
 
-# Collect all arguments for the java command;
-#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
-#     shell script including quotes and variable substitutions, so put them in
-#     double quotes to make sure that they get re-expanded; and
-#   * put everything else in single quotes, so that it's not re-expanded.
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
 
-set -- \
-        "-Dorg.gradle.appname=$APP_BASE_NAME" \
-        -classpath "$CLASSPATH" \
-        org.gradle.wrapper.GradleWrapperMain \
-        "$@"
-
-# Use "xargs" to parse quoted args.
-#
-# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
-#
-# In Bash we could simply go:
-#
-#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
-#   set -- "${ARGS[@]}" "$@"
-#
-# but POSIX shell has neither arrays nor command substitution, so instead we
-# post-process each arg (as a line of input to sed) to backslash-escape any
-# character that might be a shell metacharacter, then use eval to reverse
-# that process (while maintaining the separation between arguments), and wrap
-# the whole thing up as a single "set" statement.
-#
-# This will of course break if any of these variables contains a newline or
-# an unmatched quote.
-#
-
-eval "set -- $(
-        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
-        xargs -n1 |
-        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
-        tr '\n' ' '
-    )" '"$@"'
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
 
 exec "$JAVACMD" "$@"

settings.gradle

@@ -5,6 +5,5 @@
 rootProject.name = 'SOP-Java'
 
 include 'sop-java',
-        'sop-java-picocli',
-        'external-sop'
+        'sop-java-picocli'
 

sop-java-picocli/build.gradle

@@ -4,7 +4,6 @@
 
 plugins {
     id 'application'
-    id 'org.asciidoctor.jvm.convert' version '3.3.2'
 }
 
 dependencies {
@@ -12,16 +11,18 @@ dependencies {
     testImplementation "org.junit.jupiter:junit-jupiter-api:$junitVersion"
     testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:$junitVersion"
 
+    // Testing Exit Codes in JUnit
+    // https://todd.ginsberg.com/post/testing-system-exit/
+    testImplementation "com.ginsberg:junit5-system-exit:$junitSysExitVersion"
+
     // Mocking Components
     testImplementation "org.mockito:mockito-core:$mockitoVersion"
 
     // SOP
     implementation(project(":sop-java"))
-    testImplementation(testFixtures(project(":sop-java")))
 
     // CLI
     implementation "info.picocli:picocli:$picocliVersion"
-    annotationProcessor "info.picocli:picocli-codegen:$picocliVersion"
 
     // @Nonnull, @Nullable...
     implementation "com.google.code.findbugs:jsr305:$jsrVersion"
@@ -35,7 +36,6 @@ application {
 
 jar {
     dependsOn(":sop-java:jar")
-    duplicatesStrategy(DuplicatesStrategy.EXCLUDE)
 
     manifest {
         attributes 'Main-Class': "$mainClassName"
@@ -49,25 +49,3 @@ jar {
         exclude "META-INF/*.RSA"
     }
 }
-
-task generateManpageAsciiDoc(type: JavaExec) {
-    dependsOn(classes)
-    group = "Documentation"
-    description = "Generate AsciiDoc manpage"
-    classpath(configurations.annotationProcessor, sourceSets.main.runtimeClasspath)
-    systemProperty("user.language", "en")
-    main 'picocli.codegen.docgen.manpage.ManPageGenerator'
-    args mainClassName, "--outdir=${project.buildDir}/generated-picocli-docs", "-v" //, "--template-dir=src/docs/mantemplates"
-}
-
-apply plugin: 'org.asciidoctor.jvm.convert'
-asciidoctor {
-    attributes 'reproducible': ''
-    dependsOn(generateManpageAsciiDoc)
-    sourceDir = file("${project.buildDir}/generated-picocli-docs")
-    outputDir = file("${project.buildDir}/docs")
-    logDocuments = true
-    outputOptions {
-        backends = ['manpage', 'html5']
-    }
-}

sop-java-picocli/src/main/java/sop/cli/picocli/Print.java

@@ -0,0 +1,14 @@
+// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli;
+
+public class Print {
+
+    public static void outln(String string) {
+        // CHECKSTYLE:OFF
+        System.out.println(string);
+        // CHECKSTYLE:ON
+    }
+}

sop-java-picocli/src/main/java/sop/cli/picocli/SOPExceptionExitCodeMapper.java

@@ -0,0 +1,34 @@
+// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli;
+
+import picocli.CommandLine;
+import sop.exception.SOPGPException;
+
+public class SOPExceptionExitCodeMapper implements CommandLine.IExitCodeExceptionMapper {
+
+    @Override
+    public int getExitCode(Throwable exception) {
+        if (exception instanceof SOPGPException) {
+            return ((SOPGPException) exception).getExitCode();
+        }
+        if (exception instanceof CommandLine.UnmatchedArgumentException) {
+            CommandLine.UnmatchedArgumentException ex = (CommandLine.UnmatchedArgumentException) exception;
+            // Unmatched option of subcommand (eg. `generate-key -k`)
+            if (ex.isUnknownOption()) {
+                return SOPGPException.UnsupportedOption.EXIT_CODE;
+            }
+            // Unmatched subcommand
+            return SOPGPException.UnsupportedSubcommand.EXIT_CODE;
+        }
+        // Invalid option (eg. `--label Invalid`)
+        if (exception instanceof CommandLine.ParameterException) {
+            return SOPGPException.UnsupportedOption.EXIT_CODE;
+        }
+
+        // Others, like IOException etc.
+        return 1;
+    }
+}

sop-java-picocli/src/main/java/sop/cli/picocli/SOPExecutionExceptionHandler.java

@@ -0,0 +1,28 @@
+// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli;
+
+import picocli.CommandLine;
+
+public class SOPExecutionExceptionHandler implements CommandLine.IExecutionExceptionHandler {
+
+    @Override
+    public int handleExecutionException(Exception ex, CommandLine commandLine, CommandLine.ParseResult parseResult) {
+
+        int exitCode = commandLine.getExitCodeExceptionMapper() != null ?
+                commandLine.getExitCodeExceptionMapper().getExitCode(ex) :
+                commandLine.getCommandSpec().exitCodeOnExecutionException();
+
+        CommandLine.Help.ColorScheme colorScheme = commandLine.getColorScheme();
+        // CHECKSTYLE:OFF
+        if (ex.getMessage() != null) {
+            commandLine.getErr().println(colorScheme.errorText(ex.getMessage()));
+        }
+        ex.printStackTrace(commandLine.getErr());
+        // CHECKSTYLE:ON
+
+        return exitCode;
+    }
+}

sop-java-picocli/src/main/java/sop/cli/picocli/SopCLI.java

@@ -0,0 +1,113 @@
+// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli;
+
+import picocli.AutoComplete;
+import picocli.CommandLine;
+import sop.SOP;
+import sop.cli.picocli.commands.ArmorCmd;
+import sop.cli.picocli.commands.DearmorCmd;
+import sop.cli.picocli.commands.DecryptCmd;
+import sop.cli.picocli.commands.InlineDetachCmd;
+import sop.cli.picocli.commands.EncryptCmd;
+import sop.cli.picocli.commands.ExtractCertCmd;
+import sop.cli.picocli.commands.GenerateKeyCmd;
+import sop.cli.picocli.commands.InlineSignCmd;
+import sop.cli.picocli.commands.InlineVerifyCmd;
+import sop.cli.picocli.commands.SignCmd;
+import sop.cli.picocli.commands.VerifyCmd;
+import sop.cli.picocli.commands.VersionCmd;
+
+import java.util.List;
+import java.util.Locale;
+import java.util.ResourceBundle;
+
+@CommandLine.Command(
+        name = "sop",
+        resourceBundle = "msg_sop",
+        exitCodeOnInvalidInput = 69,
+        subcommands = {
+                CommandLine.HelpCommand.class,
+                ArmorCmd.class,
+                DearmorCmd.class,
+                DecryptCmd.class,
+                InlineDetachCmd.class,
+                EncryptCmd.class,
+                ExtractCertCmd.class,
+                GenerateKeyCmd.class,
+                SignCmd.class,
+                VerifyCmd.class,
+                InlineSignCmd.class,
+                InlineVerifyCmd.class,
+                VersionCmd.class,
+                AutoComplete.GenerateCompletion.class
+        }
+)
+public class SopCLI {
+    // Singleton
+    static SOP SOP_INSTANCE;
+    static ResourceBundle cliMsg = ResourceBundle.getBundle("msg_sop");
+
+    public static String EXECUTABLE_NAME = "sop";
+
+    public static void main(String[] args) {
+        int exitCode = execute(args);
+        if (exitCode != 0) {
+            System.exit(exitCode);
+        }
+    }
+
+    public static int execute(String[] args) {
+
+        // Set locale
+        new CommandLine(new InitLocale()).parseArgs(args);
+
+        // get error message bundle
+        cliMsg = ResourceBundle.getBundle("msg_sop");
+
+        // Prepare CLI
+        CommandLine cmd = new CommandLine(SopCLI.class);
+
+        // explicitly set help command resource bundle
+        cmd.getSubcommands().get("help").setResourceBundle(ResourceBundle.getBundle("msg_help"));
+
+        // Hide generate-completion command
+        cmd.getSubcommands().get("generate-completion").getCommandSpec().usageMessage().hidden(true);
+
+        cmd.setCommandName(EXECUTABLE_NAME)
+                .setExecutionExceptionHandler(new SOPExecutionExceptionHandler())
+                .setExitCodeExceptionMapper(new SOPExceptionExitCodeMapper())
+                .setCaseInsensitiveEnumValuesAllowed(true);
+
+        return cmd.execute(args);
+    }
+
+    public static SOP getSop() {
+        if (SOP_INSTANCE == null) {
+            String errorMsg = cliMsg.getString("sop.error.runtime.no_backend_set");
+            throw new IllegalStateException(errorMsg);
+        }
+        return SOP_INSTANCE;
+    }
+
+    public static void setSopInstance(SOP instance) {
+        SOP_INSTANCE = instance;
+    }
+}
+
+/**
+ * Control the locale.
+ *
+ * @see <a href="https://picocli.info/#_controlling_the_locale">Picocli Readme</a>
+ */
+class InitLocale {
+    @CommandLine.Option(names = { "-l", "--locale" }, descriptionKey = "sop.locale")
+    void setLocale(String locale) {
+        Locale.setDefault(new Locale(locale));
+    }
+
+    @CommandLine.Unmatched
+    List<String> remainder; // ignore any other parameters and options in the first parsing phase
+}

sop-java-picocli/src/main/java/sop/cli/picocli/commands/AbstractSopCmd.java

@@ -0,0 +1,229 @@
+// SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli.commands;
+
+import sop.exception.SOPGPException;
+import sop.util.UTCUtil;
+import sop.util.UTF8Util;
+
+import javax.annotation.Nonnull;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.Collection;
+import java.util.Date;
+import java.util.Locale;
+import java.util.ResourceBundle;
+
+public abstract class AbstractSopCmd implements Runnable {
+
+    public interface EnvironmentVariableResolver {
+        /**
+         * Resolve the value of the given environment variable.
+         * Return null if the variable is not present.
+         *
+         * @param name name of the variable
+         * @return variable value or null
+         */
+        String resolveEnvironmentVariable(String name);
+    }
+
+    public static final String PRFX_ENV = "@ENV:";
+    public static final String PRFX_FD = "@FD:";
+    public static final Date BEGINNING_OF_TIME = new Date(0);
+    public static final Date END_OF_TIME = new Date(8640000000000000L);
+
+    protected final ResourceBundle messages;
+    protected EnvironmentVariableResolver envResolver = System::getenv;
+
+    public AbstractSopCmd() {
+        this(Locale.getDefault());
+    }
+
+    public AbstractSopCmd(@Nonnull Locale locale) {
+        messages = ResourceBundle.getBundle("msg_sop", locale);
+    }
+
+    void throwIfOutputExists(String output) {
+        if (output == null) {
+            return;
+        }
+
+        File outputFile = new File(output);
+        if (outputFile.exists()) {
+            String errorMsg = getMsg("sop.error.indirect_data_type.output_file_already_exists", outputFile.getAbsolutePath());
+            throw new SOPGPException.OutputExists(errorMsg);
+        }
+    }
+
+    public String getMsg(String key) {
+        return messages.getString(key);
+    }
+
+    public String getMsg(String key, String arg1) {
+        return String.format(messages.getString(key), arg1);
+    }
+
+    public String getMsg(String key, String arg1, String arg2) {
+        return String.format(messages.getString(key), arg1, arg2);
+    }
+
+    void throwIfMissingArg(Object arg, String argName) {
+        if (arg == null) {
+            String errorMsg = getMsg("sop.error.usage.argument_required", argName);
+            throw new SOPGPException.MissingArg(errorMsg);
+        }
+    }
+
+    void throwIfEmptyParameters(Collection<?> arg, String parmName) {
+        if (arg.isEmpty()) {
+            String errorMsg = getMsg("sop.error.usage.parameter_required", parmName);
+            throw new SOPGPException.MissingArg(errorMsg);
+        }
+    }
+
+    <T> T throwIfUnsupportedSubcommand(T subcommand, String subcommandName) {
+        if (subcommand == null) {
+            String errorMsg = getMsg("sop.error.feature_support.subcommand_not_supported", subcommandName);
+            throw new SOPGPException.UnsupportedSubcommand(errorMsg);
+        }
+        return subcommand;
+    }
+
+    void setEnvironmentVariableResolver(EnvironmentVariableResolver envResolver) {
+        if (envResolver == null) {
+            throw new NullPointerException("Variable envResolver cannot be null.");
+        }
+        this.envResolver = envResolver;
+    }
+
+    public InputStream getInput(String indirectInput) throws IOException {
+        if (indirectInput == null) {
+            throw new IllegalArgumentException("Input cannot not be null.");
+        }
+
+        String trimmed = indirectInput.trim();
+        if (trimmed.isEmpty()) {
+            throw new IllegalArgumentException("Input cannot be blank.");
+        }
+
+        if (trimmed.startsWith(PRFX_ENV)) {
+            if (new File(trimmed).exists()) {
+                String errorMsg = getMsg("sop.error.indirect_data_type.ambiguous_filename", trimmed);
+                throw new SOPGPException.AmbiguousInput(errorMsg);
+            }
+
+            String envName = trimmed.substring(PRFX_ENV.length());
+            String envValue = envResolver.resolveEnvironmentVariable(envName);
+            if (envValue == null) {
+                String errorMsg = getMsg("sop.error.indirect_data_type.environment_variable_not_set", envName);
+                throw new IllegalArgumentException(errorMsg);
+            }
+
+            if (envValue.trim().isEmpty()) {
+                String errorMsg = getMsg("sop.error.indirect_data_type.environment_variable_empty", envName);
+                throw new IllegalArgumentException(errorMsg);
+            }
+
+            return new ByteArrayInputStream(envValue.getBytes("UTF8"));
+
+        } else if (trimmed.startsWith(PRFX_FD)) {
+
+            if (new File(trimmed).exists()) {
+                String errorMsg = getMsg("sop.error.indirect_data_type.ambiguous_filename", trimmed);
+                throw new SOPGPException.AmbiguousInput(errorMsg);
+            }
+
+            String errorMsg = getMsg("sop.error.indirect_data_type.designator_fd_not_supported");
+            throw new SOPGPException.UnsupportedSpecialPrefix(errorMsg);
+
+        } else {
+            File file = new File(trimmed);
+            if (!file.exists()) {
+                String errorMsg = getMsg("sop.error.indirect_data_type.input_file_does_not_exist", file.getAbsolutePath());
+                throw new SOPGPException.MissingInput(errorMsg);
+            }
+
+            if (!file.isFile()) {
+                String errorMsg = getMsg("sop.error.indirect_data_type.input_not_a_file", file.getAbsolutePath());
+                throw new SOPGPException.MissingInput(errorMsg);
+            }
+
+            return new FileInputStream(file);
+        }
+    }
+
+    public OutputStream getOutput(String indirectOutput) throws IOException {
+        if (indirectOutput == null) {
+            throw new IllegalArgumentException("Output cannot be null.");
+        }
+
+        String trimmed = indirectOutput.trim();
+        if (trimmed.isEmpty()) {
+            throw new IllegalArgumentException("Output cannot be blank.");
+        }
+
+        // @ENV not allowed for output
+        if (trimmed.startsWith(PRFX_ENV)) {
+            String errorMsg = getMsg("sop.error.indirect_data_type.illegal_use_of_env_designator");
+            throw new SOPGPException.UnsupportedSpecialPrefix(errorMsg);
+        }
+
+        if (trimmed.startsWith(PRFX_FD)) {
+            String errorMsg = getMsg("sop.error.indirect_data_type.designator_fd_not_supported");
+            throw new SOPGPException.UnsupportedSpecialPrefix(errorMsg);
+        }
+
+        File file = new File(trimmed);
+        if (file.exists()) {
+            String errorMsg = getMsg("sop.error.indirect_data_type.output_file_already_exists", file.getAbsolutePath());
+            throw new SOPGPException.OutputExists(errorMsg);
+        }
+
+        if (!file.createNewFile()) {
+            String errorMsg = getMsg("sop.error.indirect_data_type.output_file_cannot_be_created", file.getAbsolutePath());
+            throw new IOException(errorMsg);
+        }
+
+        return new FileOutputStream(file);
+    }
+    public static String stringFromInputStream(InputStream inputStream) throws IOException {
+        try {
+            ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
+            byte[] buf = new byte[4096]; int read;
+            while ((read = inputStream.read(buf)) != -1) {
+                byteOut.write(buf, 0, read);
+            }
+            // TODO: For decrypt operations we MUST accept non-UTF8 passwords
+            return UTF8Util.decodeUTF8(byteOut.toByteArray());
+        } finally {
+            inputStream.close();
+        }
+    }
+
+    public Date parseNotAfter(String notAfter) {
+        Date date = notAfter.equals("now") ? new Date() : notAfter.equals("-") ? END_OF_TIME : UTCUtil.parseUTCDate(notAfter);
+        if (date == null) {
+            String errorMsg = getMsg("sop.error.input.malformed_not_after");
+            throw new IllegalArgumentException(errorMsg);
+        }
+        return date;
+    }
+
+    public Date parseNotBefore(String notBefore) {
+        Date date = notBefore.equals("now") ? new Date() : notBefore.equals("-") ? BEGINNING_OF_TIME : UTCUtil.parseUTCDate(notBefore);
+        if (date == null) {
+            String errorMsg = getMsg("sop.error.input.malformed_not_before");
+            throw new IllegalArgumentException(errorMsg);
+        }
+        return date;
+    }
+
+}

sop-java-picocli/src/main/java/sop/cli/picocli/commands/ArmorCmd.java

@@ -0,0 +1,50 @@
+// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli.commands;
+
+import picocli.CommandLine;
+import sop.Ready;
+import sop.cli.picocli.SopCLI;
+import sop.enums.ArmorLabel;
+import sop.exception.SOPGPException;
+import sop.operation.Armor;
+
+import java.io.IOException;
+
+@CommandLine.Command(name = "armor",
+        resourceBundle = "msg_armor",
+        exitCodeOnInvalidInput = SOPGPException.UnsupportedOption.EXIT_CODE)
+public class ArmorCmd extends AbstractSopCmd {
+
+    @CommandLine.Option(names = {"--label"},
+            paramLabel = "{auto|sig|key|cert|message}")
+    ArmorLabel label;
+
+    @Override
+    public void run() {
+        Armor armor = throwIfUnsupportedSubcommand(
+                SopCLI.getSop().armor(),
+        "armor");
+
+        if (label != null) {
+            try {
+                armor.label(label);
+            } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+                String errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--label");
+                throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+            }
+        }
+
+        try {
+            Ready ready = armor.data(System.in);
+            ready.writeTo(System.out);
+        } catch (SOPGPException.BadData badData) {
+            String errorMsg = getMsg("sop.error.input.stdin_not_openpgp_data");
+            throw new SOPGPException.BadData(errorMsg, badData);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

sop-java-picocli/src/main/java/sop/cli/picocli/commands/DearmorCmd.java

@@ -0,0 +1,34 @@
+// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli.commands;
+
+import picocli.CommandLine;
+import sop.cli.picocli.SopCLI;
+import sop.exception.SOPGPException;
+import sop.operation.Dearmor;
+
+import java.io.IOException;
+
+@CommandLine.Command(name = "dearmor",
+        resourceBundle = "msg_dearmor",
+        exitCodeOnInvalidInput = SOPGPException.UnsupportedOption.EXIT_CODE)
+public class DearmorCmd extends AbstractSopCmd {
+
+    @Override
+    public void run() {
+        Dearmor dearmor = throwIfUnsupportedSubcommand(
+                SopCLI.getSop().dearmor(), "dearmor");
+
+        try {
+            dearmor.data(System.in)
+                    .writeTo(System.out);
+        } catch (SOPGPException.BadData e) {
+            String errorMsg = getMsg("sop.error.input.stdin_not_openpgp_data");
+            throw new SOPGPException.BadData(errorMsg, e);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

sop-java-picocli/src/main/java/sop/cli/picocli/commands/DecryptCmd.java

@@ -0,0 +1,247 @@
+// SPDX-FileCopyrightText: 2020 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli.commands;
+
+import picocli.CommandLine;
+import sop.DecryptionResult;
+import sop.ReadyWithResult;
+import sop.SessionKey;
+import sop.Verification;
+import sop.cli.picocli.SopCLI;
+import sop.exception.SOPGPException;
+import sop.operation.Decrypt;
+import sop.util.HexUtil;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.regex.Pattern;
+
+@CommandLine.Command(name = "decrypt",
+        resourceBundle = "msg_decrypt",
+        exitCodeOnInvalidInput = SOPGPException.UnsupportedOption.EXIT_CODE)
+public class DecryptCmd extends AbstractSopCmd {
+
+    private static final String OPT_WITH_SESSION_KEY = "--with-session-key";
+    private static final String OPT_WITH_PASSWORD = "--with-password";
+    private static final String OPT_NOT_BEFORE = "--not-before";
+    private static final String OPT_NOT_AFTER = "--not-after";
+    private static final String OPT_SESSION_KEY_OUT = "--session-key-out";
+    private static final String OPT_VERIFY_OUT = "--verify-out";
+    private static final String OPT_VERIFY_WITH = "--verify-with";
+    private static final String OPT_WITH_KEY_PASSWORD = "--with-key-password";
+
+
+    @CommandLine.Option(
+            names = {OPT_SESSION_KEY_OUT},
+            paramLabel = "SESSIONKEY")
+    String sessionKeyOut;
+
+    @CommandLine.Option(
+            names = {OPT_WITH_SESSION_KEY},
+            paramLabel = "SESSIONKEY")
+    List<String> withSessionKey = new ArrayList<>();
+
+    @CommandLine.Option(
+            names = {OPT_WITH_PASSWORD},
+            paramLabel = "PASSWORD")
+    List<String> withPassword = new ArrayList<>();
+
+    @CommandLine.Option(names = {OPT_VERIFY_OUT},
+            paramLabel = "VERIFICATIONS")
+    String verifyOut;
+
+    @CommandLine.Option(names = {OPT_VERIFY_WITH},
+            paramLabel = "CERT")
+    List<String> certs = new ArrayList<>();
+
+    @CommandLine.Option(names = {OPT_NOT_BEFORE},
+            paramLabel = "DATE")
+    String notBefore = "-";
+
+    @CommandLine.Option(names = {OPT_NOT_AFTER},
+            paramLabel = "DATE")
+    String notAfter = "now";
+
+    @CommandLine.Parameters(index = "0..*",
+            paramLabel = "KEY")
+    List<String> keys = new ArrayList<>();
+
+    @CommandLine.Option(names = {OPT_WITH_KEY_PASSWORD},
+            paramLabel = "PASSWORD")
+    List<String> withKeyPassword = new ArrayList<>();
+
+    @Override
+    public void run() {
+        Decrypt decrypt = throwIfUnsupportedSubcommand(
+                SopCLI.getSop().decrypt(), "decrypt");
+
+        throwIfOutputExists(verifyOut);
+        throwIfOutputExists(sessionKeyOut);
+
+        setNotAfter(notAfter, decrypt);
+        setNotBefore(notBefore, decrypt);
+        setWithPasswords(withPassword, decrypt);
+        setWithSessionKeys(withSessionKey, decrypt);
+        setWithKeyPassword(withKeyPassword, decrypt);
+        setVerifyWith(certs, decrypt);
+        setDecryptWith(keys, decrypt);
+
+        if (verifyOut != null && certs.isEmpty()) {
+            String errorMsg = getMsg("sop.error.usage.option_requires_other_option", OPT_VERIFY_OUT, OPT_VERIFY_WITH);
+            throw new SOPGPException.IncompleteVerification(errorMsg);
+        }
+
+        try {
+            ReadyWithResult<DecryptionResult> ready = decrypt.ciphertext(System.in);
+            DecryptionResult result = ready.writeTo(System.out);
+            writeSessionKeyOut(result);
+            writeVerifyOut(result);
+        } catch (SOPGPException.BadData badData) {
+            String errorMsg = getMsg("sop.error.input.stdin_not_a_message");
+            throw new SOPGPException.BadData(errorMsg, badData);
+        } catch (IOException ioException) {
+            throw new RuntimeException(ioException);
+        }
+    }
+
+    private void writeVerifyOut(DecryptionResult result) throws IOException {
+        if (verifyOut != null) {
+            try (OutputStream fileOut = getOutput(verifyOut)) {
+                PrintWriter writer = new PrintWriter(fileOut);
+                for (Verification verification : result.getVerifications()) {
+                    // CHECKSTYLE:OFF
+                    writer.println(verification.toString());
+                    // CHECKSTYLE:ON
+                }
+                writer.flush();
+            }
+        }
+    }
+
+    private void writeSessionKeyOut(DecryptionResult result) throws IOException {
+        if (sessionKeyOut != null) {
+            try (OutputStream outputStream = getOutput(sessionKeyOut)) {
+                if (!result.getSessionKey().isPresent()) {
+                    String errorMsg = getMsg("sop.error.runtime.no_session_key_extracted");
+                    throw new SOPGPException.UnsupportedOption(String.format(errorMsg, OPT_SESSION_KEY_OUT));
+                } else {
+                    SessionKey sessionKey = result.getSessionKey().get();
+                    outputStream.write(sessionKey.getAlgorithm());
+                    outputStream.write(sessionKey.getKey());
+                }
+            }
+        }
+    }
+
+    private void setDecryptWith(List<String> keys, Decrypt decrypt) {
+        for (String key : keys) {
+            try (InputStream keyIn = getInput(key)) {
+                decrypt.withKey(keyIn);
+            } catch (SOPGPException.KeyIsProtected keyIsProtected) {
+                String errorMsg = getMsg("sop.error.runtime.cannot_unlock_key", key);
+                throw new SOPGPException.KeyIsProtected(errorMsg, keyIsProtected);
+            } catch (SOPGPException.BadData badData) {
+                String errorMsg = getMsg("sop.error.input.not_a_private_key", key);
+                throw new SOPGPException.BadData(errorMsg, badData);
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+    private void setVerifyWith(List<String> certs, Decrypt decrypt) {
+        for (String cert : certs) {
+            try (InputStream certIn = getInput(cert)) {
+                decrypt.verifyWithCert(certIn);
+            } catch (SOPGPException.BadData badData) {
+                String errorMsg = getMsg("sop.error.input.not_a_certificate", cert);
+                throw new SOPGPException.BadData(errorMsg, badData);
+            } catch (IOException ioException) {
+                throw new RuntimeException(ioException);
+            }
+        }
+    }
+
+    private void setWithSessionKeys(List<String> withSessionKey, Decrypt decrypt) {
+        Pattern sessionKeyPattern = Pattern.compile("^\\d+:[0-9A-F]+$");
+        for (String sessionKeyFile : withSessionKey) {
+            String sessionKey;
+            try {
+                sessionKey = stringFromInputStream(getInput(sessionKeyFile));
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
+            if (!sessionKeyPattern.matcher(sessionKey).matches()) {
+                String errorMsg = getMsg("sop.error.input.malformed_session_key");
+                throw new IllegalArgumentException(errorMsg);
+            }
+            String[] split = sessionKey.split(":");
+            byte algorithm = (byte) Integer.parseInt(split[0]);
+            byte[] key = HexUtil.hexToBytes(split[1]);
+
+            try {
+                decrypt.withSessionKey(new SessionKey(algorithm, key));
+            } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+                String errorMsg = getMsg("sop.error.feature_support.option_not_supported", OPT_WITH_SESSION_KEY);
+                throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+            }
+        }
+    }
+
+    private void setWithPasswords(List<String> withPassword, Decrypt decrypt) {
+        for (String passwordFile : withPassword) {
+            try {
+                String password = stringFromInputStream(getInput(passwordFile));
+                decrypt.withPassword(password);
+            } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+
+                String errorMsg = getMsg("sop.error.feature_support.option_not_supported", OPT_WITH_PASSWORD);
+                throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+    private void setWithKeyPassword(List<String> withKeyPassword, Decrypt decrypt) {
+        for (String passwordFile : withKeyPassword) {
+            try {
+                String password = stringFromInputStream(getInput(passwordFile));
+                decrypt.withKeyPassword(password);
+            } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+
+                String errorMsg = getMsg("sop.error.feature_support.option_not_supported", OPT_WITH_KEY_PASSWORD);
+                throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+    private void setNotAfter(String notAfter, Decrypt decrypt) {
+        Date notAfterDate = parseNotAfter(notAfter);
+        try {
+            decrypt.verifyNotAfter(notAfterDate);
+        } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+            String errorMsg = getMsg("sop.error.feature_support.option_not_supported", OPT_NOT_AFTER);
+            throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+        }
+    }
+
+    private void setNotBefore(String notBefore, Decrypt decrypt) {
+        Date notBeforeDate = parseNotBefore(notBefore);
+        try {
+            decrypt.verifyNotBefore(notBeforeDate);
+        } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+            String errorMsg = getMsg("sop.error.feature_support.option_not_supported", OPT_NOT_BEFORE);
+            throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+        }
+    }
+}

sop-java-picocli/src/main/java/sop/cli/picocli/commands/EncryptCmd.java

@@ -0,0 +1,141 @@
+// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli.commands;
+
+import picocli.CommandLine;
+import sop.Ready;
+import sop.cli.picocli.SopCLI;
+import sop.enums.EncryptAs;
+import sop.exception.SOPGPException;
+import sop.operation.Encrypt;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+@CommandLine.Command(name = "encrypt",
+        resourceBundle = "msg_encrypt",
+        exitCodeOnInvalidInput = 37)
+public class EncryptCmd extends AbstractSopCmd {
+
+    @CommandLine.Option(names = "--no-armor",
+            negatable = true)
+    boolean armor = true;
+
+    @CommandLine.Option(names = {"--as"},
+            paramLabel = "{binary|text}")
+    EncryptAs type;
+
+    @CommandLine.Option(names = "--with-password",
+            paramLabel = "PASSWORD")
+    List<String> withPassword = new ArrayList<>();
+
+    @CommandLine.Option(names = "--sign-with",
+            paramLabel = "KEY")
+    List<String> signWith = new ArrayList<>();
+
+    @CommandLine.Option(names = "--with-key-password",
+            paramLabel = "PASSWORD")
+    List<String> withKeyPassword = new ArrayList<>();
+
+    @CommandLine.Parameters(index = "0..*",
+            paramLabel = "CERTS")
+    List<String> certs = new ArrayList<>();
+
+    @Override
+    public void run() {
+        Encrypt encrypt = throwIfUnsupportedSubcommand(
+                SopCLI.getSop().encrypt(), "encrypt");
+
+        if (type != null) {
+            try {
+                encrypt.mode(type);
+            } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+                String errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--as");
+                throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+            }
+        }
+
+        if (withPassword.isEmpty() && certs.isEmpty()) {
+            String errorMsg = getMsg("sop.error.usage.password_or_cert_required");
+            throw new SOPGPException.MissingArg(errorMsg);
+        }
+
+        for (String passwordFileName : withPassword) {
+            try {
+                String password = stringFromInputStream(getInput(passwordFileName));
+                encrypt.withPassword(password);
+            } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+
+                String errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--with-password");
+                throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
+        }
+
+        for (String passwordFileName : withKeyPassword) {
+            try {
+                String password = stringFromInputStream(getInput(passwordFileName));
+                encrypt.withKeyPassword(password);
+            } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+
+                String errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--with-key-password");
+                throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
+        }
+
+        for (String keyInput : signWith) {
+            try (InputStream keyIn = getInput(keyInput)) {
+                encrypt.signWith(keyIn);
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            } catch (SOPGPException.KeyIsProtected keyIsProtected) {
+                String errorMsg = getMsg("sop.error.runtime.cannot_unlock_key", keyInput);
+                throw new SOPGPException.KeyIsProtected(errorMsg, keyIsProtected);
+            } catch (SOPGPException.UnsupportedAsymmetricAlgo unsupportedAsymmetricAlgo) {
+                String errorMsg = getMsg("sop.error.runtime.key_uses_unsupported_asymmetric_algorithm", keyInput);
+                throw new SOPGPException.UnsupportedAsymmetricAlgo(errorMsg, unsupportedAsymmetricAlgo);
+            } catch (SOPGPException.KeyCannotSign keyCannotSign) {
+                String errorMsg = getMsg("sop.error.runtime.key_cannot_sign", keyInput);
+                throw new SOPGPException.KeyCannotSign(errorMsg, keyCannotSign);
+            } catch (SOPGPException.BadData badData) {
+                String errorMsg = getMsg("sop.error.input.not_a_private_key", keyInput);
+                throw new SOPGPException.BadData(errorMsg, badData);
+            }
+        }
+
+        for (String certInput : certs) {
+            try (InputStream certIn = getInput(certInput)) {
+                encrypt.withCert(certIn);
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            } catch (SOPGPException.UnsupportedAsymmetricAlgo unsupportedAsymmetricAlgo) {
+                String errorMsg = getMsg("sop.error.runtime.cert_uses_unsupported_asymmetric_algorithm", certInput);
+                throw new SOPGPException.UnsupportedAsymmetricAlgo(errorMsg, unsupportedAsymmetricAlgo);
+            } catch (SOPGPException.CertCannotEncrypt certCannotEncrypt) {
+                String errorMsg = getMsg("sop.error.runtime.cert_cannot_encrypt", certInput);
+                throw new SOPGPException.CertCannotEncrypt(errorMsg, certCannotEncrypt);
+            } catch (SOPGPException.BadData badData) {
+                String errorMsg = getMsg("sop.error.input.not_a_certificate", certInput);
+                throw new SOPGPException.BadData(errorMsg, badData);
+            }
+        }
+
+        if (!armor) {
+            encrypt.noArmor();
+        }
+
+        try {
+            Ready ready = encrypt.plaintext(System.in);
+            ready.writeTo(System.out);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

sop-java-picocli/src/main/java/sop/cli/picocli/commands/ExtractCertCmd.java

@@ -0,0 +1,43 @@
+// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli.commands;
+
+import java.io.IOException;
+
+import picocli.CommandLine;
+import sop.Ready;
+import sop.cli.picocli.SopCLI;
+import sop.exception.SOPGPException;
+import sop.operation.ExtractCert;
+
+@CommandLine.Command(name = "extract-cert",
+        resourceBundle = "msg_extract-cert",
+        exitCodeOnInvalidInput = 37)
+public class ExtractCertCmd extends AbstractSopCmd {
+
+    @CommandLine.Option(names = "--no-armor",
+            negatable = true)
+    boolean armor = true;
+
+    @Override
+    public void run() {
+        ExtractCert extractCert = throwIfUnsupportedSubcommand(
+                SopCLI.getSop().extractCert(), "extract-cert");
+
+        if (!armor) {
+            extractCert.noArmor();
+        }
+
+        try {
+            Ready ready = extractCert.key(System.in);
+            ready.writeTo(System.out);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        } catch (SOPGPException.BadData badData) {
+            String errorMsg = getMsg("sop.error.input.stdin_not_a_private_key");
+            throw new SOPGPException.BadData(errorMsg, badData);
+        }
+    }
+}

sop-java-picocli/src/main/java/sop/cli/picocli/commands/GenerateKeyCmd.java

@@ -0,0 +1,65 @@
+// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli.commands;
+
+import picocli.CommandLine;
+import sop.Ready;
+import sop.cli.picocli.SopCLI;
+import sop.exception.SOPGPException;
+import sop.operation.GenerateKey;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+@CommandLine.Command(name = "generate-key",
+        resourceBundle = "msg_generate-key",
+        exitCodeOnInvalidInput = 37)
+public class GenerateKeyCmd extends AbstractSopCmd {
+
+    @CommandLine.Option(names = "--no-armor",
+            negatable = true)
+    boolean armor = true;
+
+    @CommandLine.Parameters(paramLabel = "USERID")
+    List<String> userId = new ArrayList<>();
+
+    @CommandLine.Option(names = "--with-key-password",
+            paramLabel = "PASSWORD")
+    String withKeyPassword;
+
+    @Override
+    public void run() {
+        GenerateKey generateKey = throwIfUnsupportedSubcommand(
+                SopCLI.getSop().generateKey(), "generate-key");
+
+        for (String userId : userId) {
+            generateKey.userId(userId);
+        }
+
+        if (!armor) {
+            generateKey.noArmor();
+        }
+
+        if (withKeyPassword != null) {
+            try {
+                String password = stringFromInputStream(getInput(withKeyPassword));
+                generateKey.withKeyPassword(password);
+            } catch (SOPGPException.UnsupportedOption e) {
+                String errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--with-key-password");
+                throw new SOPGPException.UnsupportedOption(errorMsg, e);
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
+        }
+
+        try {
+            Ready ready = generateKey.generate();
+            ready.writeTo(System.out);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

sop-java-picocli/src/main/java/sop/cli/picocli/commands/InlineDetachCmd.java

@@ -0,0 +1,50 @@
+// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli.commands;
+
+import picocli.CommandLine;
+import sop.Signatures;
+import sop.cli.picocli.SopCLI;
+import sop.exception.SOPGPException;
+import sop.operation.InlineDetach;
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+@CommandLine.Command(name = "inline-detach",
+        resourceBundle = "msg_inline-detach",
+        exitCodeOnInvalidInput = SOPGPException.UnsupportedOption.EXIT_CODE)
+public class InlineDetachCmd extends AbstractSopCmd {
+
+    @CommandLine.Option(
+            names = {"--signatures-out"},
+            paramLabel = "SIGNATURES")
+    String signaturesOut;
+
+    @CommandLine.Option(names = "--no-armor",
+            negatable = true)
+    boolean armor = true;
+
+    @Override
+    public void run() {
+        InlineDetach inlineDetach = throwIfUnsupportedSubcommand(
+                SopCLI.getSop().inlineDetach(), "inline-detach");
+
+        throwIfOutputExists(signaturesOut);
+        throwIfMissingArg(signaturesOut, "--signatures-out");
+
+        if (!armor) {
+            inlineDetach.noArmor();
+        }
+
+        try (OutputStream outputStream = getOutput(signaturesOut)) {
+            Signatures signatures = inlineDetach
+                    .message(System.in).writeTo(System.out);
+            signatures.writeTo(outputStream);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

sop-java-picocli/src/main/java/sop/cli/picocli/commands/InlineSignCmd.java

@@ -0,0 +1,95 @@
+// SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli.commands;
+
+import picocli.CommandLine;
+import sop.Ready;
+import sop.cli.picocli.SopCLI;
+import sop.enums.InlineSignAs;
+import sop.exception.SOPGPException;
+import sop.operation.InlineSign;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+@CommandLine.Command(name = "inline-sign",
+        resourceBundle = "msg_inline-sign",
+        exitCodeOnInvalidInput = 37)
+public class InlineSignCmd extends AbstractSopCmd {
+
+    @CommandLine.Option(names = "--no-armor",
+            negatable = true)
+    boolean armor = true;
+
+    @CommandLine.Option(names = "--as",
+            paramLabel = "{binary|text|cleartextsigned}")
+    InlineSignAs type;
+
+    @CommandLine.Parameters(paramLabel = "KEYS")
+    List<String> secretKeyFile = new ArrayList<>();
+
+    @CommandLine.Option(names = "--with-key-password",
+            paramLabel = "PASSWORD")
+    List<String> withKeyPassword = new ArrayList<>();
+
+    @Override
+    public void run() {
+        InlineSign inlineSign = throwIfUnsupportedSubcommand(
+                SopCLI.getSop().inlineSign(), "inline-sign");
+
+        if (type != null) {
+            try {
+                inlineSign.mode(type);
+            } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+                String errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--as");
+                throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+            }
+        }
+
+        if (secretKeyFile.isEmpty()) {
+            String errorMsg = getMsg("sop.error.usage.parameter_required", "KEYS");
+            throw new SOPGPException.MissingArg(errorMsg);
+        }
+
+        for (String passwordFile : withKeyPassword) {
+            try {
+                String password = stringFromInputStream(getInput(passwordFile));
+                inlineSign.withKeyPassword(password);
+            } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+                String errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--with-key-password");
+                throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
+        }
+
+        for (String keyInput : secretKeyFile) {
+            try (InputStream keyIn = getInput(keyInput)) {
+                inlineSign.key(keyIn);
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            } catch (SOPGPException.KeyIsProtected e) {
+                String errorMsg = getMsg("sop.error.runtime.cannot_unlock_key", keyInput);
+                throw new SOPGPException.KeyIsProtected(errorMsg, e);
+            } catch (SOPGPException.BadData badData) {
+                String errorMsg = getMsg("sop.error.input.not_a_private_key", keyInput);
+                throw new SOPGPException.BadData(errorMsg, badData);
+            }
+        }
+
+        if (!armor) {
+            inlineSign.noArmor();
+        }
+
+        try {
+            Ready ready = inlineSign.data(System.in);
+            ready.writeTo(System.out);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

sop-java-picocli/src/main/java/sop/cli/picocli/commands/InlineVerifyCmd.java

@@ -0,0 +1,106 @@
+// SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli.commands;
+
+import picocli.CommandLine;
+import sop.ReadyWithResult;
+import sop.Verification;
+import sop.cli.picocli.SopCLI;
+import sop.exception.SOPGPException;
+import sop.operation.InlineVerify;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.List;
+
+@CommandLine.Command(name = "inline-verify",
+        resourceBundle = "msg_inline-verify",
+        exitCodeOnInvalidInput = 37)
+public class InlineVerifyCmd extends AbstractSopCmd {
+
+    @CommandLine.Parameters(arity = "1..*",
+            paramLabel = "CERT")
+    List<String> certificates = new ArrayList<>();
+
+    @CommandLine.Option(names = {"--not-before"},
+            paramLabel = "DATE")
+    String notBefore = "-";
+
+    @CommandLine.Option(names = {"--not-after"},
+            paramLabel = "DATE")
+    String notAfter = "now";
+
+    @CommandLine.Option(names = "--verifications-out")
+    String verificationsOut;
+
+    @Override
+    public void run() {
+        InlineVerify inlineVerify = throwIfUnsupportedSubcommand(
+                SopCLI.getSop().inlineVerify(), "inline-verify");
+
+        throwIfOutputExists(verificationsOut);
+
+        if (notAfter != null) {
+            try {
+                inlineVerify.notAfter(parseNotAfter(notAfter));
+            } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+                String errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--not-after");
+                throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+            }
+        }
+        if (notBefore != null) {
+            try {
+                inlineVerify.notBefore(parseNotBefore(notBefore));
+            } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+                String errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--not-before");
+                throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+            }
+        }
+
+        for (String certInput : certificates) {
+            try (InputStream certIn = getInput(certInput)) {
+                inlineVerify.cert(certIn);
+            } catch (IOException ioException) {
+                throw new RuntimeException(ioException);
+            } catch (SOPGPException.UnsupportedAsymmetricAlgo unsupportedAsymmetricAlgo) {
+                String errorMsg = getMsg("sop.error.runtime.cert_uses_unsupported_asymmetric_algorithm", certInput);
+                throw new SOPGPException.UnsupportedAsymmetricAlgo(errorMsg, unsupportedAsymmetricAlgo);
+            } catch (SOPGPException.BadData badData) {
+                String errorMsg = getMsg("sop.error.input.not_a_certificate", certInput);
+                throw new SOPGPException.BadData(errorMsg, badData);
+            }
+        }
+
+        List<Verification> verifications = null;
+        try {
+            ReadyWithResult<List<Verification>> ready = inlineVerify.data(System.in);
+            verifications = ready.writeTo(System.out);
+        } catch (SOPGPException.NoSignature e) {
+            String errorMsg = getMsg("sop.error.runtime.no_verifiable_signature_found");
+            throw new SOPGPException.NoSignature(errorMsg, e);
+        } catch (IOException ioException) {
+            throw new RuntimeException(ioException);
+        } catch (SOPGPException.BadData badData) {
+            String errorMsg = getMsg("sop.error.input.stdin_not_a_message");
+            throw new SOPGPException.BadData(errorMsg, badData);
+        }
+
+        if (verificationsOut != null) {
+            try (OutputStream outputStream = getOutput(verificationsOut)) {
+                PrintWriter pw = new PrintWriter(outputStream);
+                for (Verification verification : verifications) {
+                    // CHECKSTYLE:OFF
+                    pw.println(verification);
+                    // CHECKSTYLE:ON
+                }
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+}

sop-java-picocli/src/main/java/sop/cli/picocli/commands/SignCmd.java

@@ -0,0 +1,108 @@
+// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli.commands;
+
+import picocli.CommandLine;
+import sop.MicAlg;
+import sop.ReadyWithResult;
+import sop.SigningResult;
+import sop.cli.picocli.SopCLI;
+import sop.enums.SignAs;
+import sop.exception.SOPGPException;
+import sop.operation.DetachedSign;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+@CommandLine.Command(name = "sign",
+        resourceBundle = "msg_detached-sign",
+        exitCodeOnInvalidInput = 37)
+public class SignCmd extends AbstractSopCmd {
+
+    @CommandLine.Option(names = "--no-armor",
+            negatable = true)
+    boolean armor = true;
+
+    @CommandLine.Option(names = "--as",
+            paramLabel = "{binary|text}")
+    SignAs type;
+
+    @CommandLine.Parameters(paramLabel = "KEYS")
+    List<String> secretKeyFile = new ArrayList<>();
+
+    @CommandLine.Option(names = "--with-key-password",
+            paramLabel = "PASSWORD")
+    List<String> withKeyPassword = new ArrayList<>();
+
+    @CommandLine.Option(names = "--micalg-out",
+            paramLabel = "MICALG")
+    String micAlgOut;
+
+    @Override
+    public void run() {
+        DetachedSign detachedSign = throwIfUnsupportedSubcommand(
+                SopCLI.getSop().detachedSign(), "sign");
+
+        throwIfOutputExists(micAlgOut);
+        throwIfEmptyParameters(secretKeyFile, "KEYS");
+
+        if (type != null) {
+            try {
+                detachedSign.mode(type);
+            } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+                String errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--as");
+                throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+            }
+        }
+
+        for (String passwordFile : withKeyPassword) {
+            try {
+                String password = stringFromInputStream(getInput(passwordFile));
+                detachedSign.withKeyPassword(password);
+            } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+                String errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--with-key-password");
+                throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
+        }
+
+        for (String keyInput : secretKeyFile) {
+            try (InputStream keyIn = getInput(keyInput)) {
+                detachedSign.key(keyIn);
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            } catch (SOPGPException.KeyIsProtected keyIsProtected) {
+                String errorMsg = getMsg("sop.error.runtime.cannot_unlock_key", keyInput);
+                throw new SOPGPException.KeyIsProtected(errorMsg, keyIsProtected);
+            } catch (SOPGPException.BadData badData) {
+                String errorMsg = getMsg("sop.error.input.not_a_private_key", keyInput);
+                throw new SOPGPException.BadData(errorMsg, badData);
+            }
+        }
+
+        if (!armor) {
+            detachedSign.noArmor();
+        }
+
+        try {
+            ReadyWithResult<SigningResult> ready = detachedSign.data(System.in);
+            SigningResult result = ready.writeTo(System.out);
+
+            MicAlg micAlg = result.getMicAlg();
+            if (micAlgOut != null) {
+                // Write micalg out
+                OutputStream outputStream = getOutput(micAlgOut);
+                micAlg.writeTo(outputStream);
+                outputStream.close();
+            }
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

sop-java-picocli/src/main/java/sop/cli/picocli/commands/VerifyCmd.java

@@ -0,0 +1,102 @@
+// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli.commands;
+
+import picocli.CommandLine;
+import sop.Verification;
+import sop.cli.picocli.Print;
+import sop.cli.picocli.SopCLI;
+import sop.exception.SOPGPException;
+import sop.operation.DetachedVerify;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+@CommandLine.Command(name = "verify",
+        resourceBundle = "msg_detached-verify",
+        exitCodeOnInvalidInput = 37)
+public class VerifyCmd extends AbstractSopCmd {
+
+    @CommandLine.Parameters(index = "0",
+            paramLabel = "SIGNATURE")
+    String signature;
+
+    @CommandLine.Parameters(index = "0..*",
+            arity = "1..*",
+            paramLabel = "CERT")
+    List<String> certificates = new ArrayList<>();
+
+    @CommandLine.Option(names = {"--not-before"},
+            paramLabel = "DATE")
+    String notBefore = "-";
+
+    @CommandLine.Option(names = {"--not-after"},
+            paramLabel = "DATE")
+    String notAfter = "now";
+
+    @Override
+    public void run() {
+        DetachedVerify detachedVerify = throwIfUnsupportedSubcommand(
+                SopCLI.getSop().detachedVerify(), "verify");
+
+        if (notAfter != null) {
+            try {
+                detachedVerify.notAfter(parseNotAfter(notAfter));
+            } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+                String errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--not-after");
+                throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+            }
+        }
+        if (notBefore != null) {
+            try {
+                detachedVerify.notBefore(parseNotBefore(notBefore));
+            } catch (SOPGPException.UnsupportedOption unsupportedOption) {
+                String errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--not-before");
+                throw new SOPGPException.UnsupportedOption(errorMsg, unsupportedOption);
+            }
+        }
+
+        for (String certInput : certificates) {
+            try (InputStream certIn = getInput(certInput)) {
+                detachedVerify.cert(certIn);
+            } catch (IOException ioException) {
+                throw new RuntimeException(ioException);
+            } catch (SOPGPException.BadData badData) {
+                String errorMsg = getMsg("sop.error.input.not_a_certificate", certInput);
+                throw new SOPGPException.BadData(errorMsg, badData);
+            }
+        }
+
+        if (signature != null) {
+            try (InputStream sigIn = getInput(signature)) {
+                detachedVerify.signatures(sigIn);
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            } catch (SOPGPException.BadData badData) {
+                String errorMsg = getMsg("sop.error.input.not_a_signature", signature);
+                throw new SOPGPException.BadData(errorMsg, badData);
+            }
+        }
+
+        List<Verification> verifications;
+        try {
+            verifications = detachedVerify.data(System.in);
+        } catch (SOPGPException.NoSignature e) {
+            String errorMsg = getMsg("sop.error.runtime.no_verifiable_signature_found");
+            throw new SOPGPException.NoSignature(errorMsg, e);
+        } catch (IOException ioException) {
+            throw new RuntimeException(ioException);
+        } catch (SOPGPException.BadData badData) {
+            String errorMsg = getMsg("sop.error.input.stdin_not_a_message");
+            throw new SOPGPException.BadData(errorMsg, badData);
+        }
+
+        for (Verification verification : verifications) {
+            Print.outln(verification.toString());
+        }
+    }
+}

sop-java-picocli/src/main/java/sop/cli/picocli/commands/VersionCmd.java

@@ -0,0 +1,49 @@
+// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli.commands;
+
+import picocli.CommandLine;
+import sop.cli.picocli.Print;
+import sop.cli.picocli.SopCLI;
+import sop.operation.Version;
+
+@CommandLine.Command(name = "version", resourceBundle = "msg_version",
+        exitCodeOnInvalidInput = 37)
+public class VersionCmd extends AbstractSopCmd {
+
+    @CommandLine.ArgGroup()
+    Exclusive exclusive;
+
+    static class Exclusive {
+        @CommandLine.Option(names = "--extended")
+        boolean extended;
+
+        @CommandLine.Option(names = "--backend")
+        boolean backend;
+    }
+
+
+
+    @Override
+    public void run() {
+        Version version = throwIfUnsupportedSubcommand(
+                SopCLI.getSop().version(), "version");
+
+        if (exclusive == null) {
+            Print.outln(version.getName() + " " + version.getVersion());
+            return;
+        }
+
+        if (exclusive.extended) {
+            Print.outln(version.getExtendedVersion());
+            return;
+        }
+
+        if (exclusive.backend) {
+            Print.outln(version.getBackendVersion());
+            return;
+        }
+    }
+}

sop-java-picocli/src/main/java/sop/cli/picocli/commands/package-info.java

@@ -0,0 +1,8 @@
+// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+/**
+ * Subcommands of the PGPainless SOP.
+ */
+package sop.cli.picocli.commands;

sop-java-picocli/src/main/java/sop/cli/picocli/package-info.java

@@ -0,0 +1,8 @@
+// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+/**
+ * Implementation of the Stateless OpenPGP Command Line Interface using Picocli.
+ */
+package sop.cli.picocli;

sop-java-picocli/src/main/kotlin/sop/cli/picocli/SOPExceptionExitCodeMapper.kt

@@ -1,33 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli
-
-import picocli.CommandLine.*
-import sop.exception.SOPGPException
-
-class SOPExceptionExitCodeMapper : IExitCodeExceptionMapper {
-
-    override fun getExitCode(exception: Throwable): Int =
-        if (exception is SOPGPException) {
-            // SOPGPExceptions have well-defined exit code
-            exception.getExitCode()
-        } else if (exception is UnmatchedArgumentException) {
-            if (exception.isUnknownOption) {
-                // Unmatched option of subcommand (e.g. `generate-key --unknown`)
-                SOPGPException.UnsupportedOption.EXIT_CODE
-            } else {
-                // Unmatched subcommand
-                SOPGPException.UnsupportedSubcommand.EXIT_CODE
-            }
-        } else if (exception is MissingParameterException) {
-            SOPGPException.MissingArg.EXIT_CODE
-        } else if (exception is ParameterException) {
-            // Invalid option (e.g. `--as invalid`)
-            SOPGPException.UnsupportedOption.EXIT_CODE
-        } else {
-            // Others, like IOException etc.
-            1
-        }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/SOPExecutionExceptionHandler.kt

@@ -1,34 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli
-
-import picocli.CommandLine
-import picocli.CommandLine.IExecutionExceptionHandler
-
-class SOPExecutionExceptionHandler : IExecutionExceptionHandler {
-    override fun handleExecutionException(
-        ex: Exception,
-        commandLine: CommandLine,
-        parseResult: CommandLine.ParseResult
-    ): Int {
-        val exitCode =
-            if (commandLine.exitCodeExceptionMapper != null)
-                commandLine.exitCodeExceptionMapper.getExitCode(ex)
-            else commandLine.commandSpec.exitCodeOnExecutionException()
-
-        val colorScheme = commandLine.colorScheme
-        if (ex.message != null) {
-            commandLine.getErr().println(colorScheme.errorText(ex.message))
-        } else {
-            commandLine.getErr().println(ex.javaClass.getName())
-        }
-
-        if (SopCLI.stacktrace) {
-            ex.printStackTrace(commandLine.getErr())
-        }
-
-        return exitCode
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/SopCLI.kt

@@ -1,113 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli
-
-import java.util.*
-import kotlin.system.exitProcess
-import picocli.AutoComplete.GenerateCompletion
-import picocli.CommandLine
-import picocli.CommandLine.*
-import sop.SOP
-import sop.cli.picocli.commands.*
-import sop.exception.SOPGPException
-
-@Command(
-    name = "sop",
-    resourceBundle = "msg_sop",
-    exitCodeOnInvalidInput = SOPGPException.UnsupportedSubcommand.EXIT_CODE,
-    subcommands =
-        [
-            // Meta subcommands
-            VersionCmd::class,
-            ListProfilesCmd::class,
-            // Key and certificate management
-            GenerateKeyCmd::class,
-            ChangeKeyPasswordCmd::class,
-            RevokeKeyCmd::class,
-            ExtractCertCmd::class,
-            // Messaging subcommands
-            SignCmd::class,
-            VerifyCmd::class,
-            EncryptCmd::class,
-            DecryptCmd::class,
-            InlineDetachCmd::class,
-            InlineSignCmd::class,
-            InlineVerifyCmd::class,
-            // Transport
-            ArmorCmd::class,
-            DearmorCmd::class,
-            // misc
-            HelpCommand::class,
-            GenerateCompletion::class])
-class SopCLI {
-
-    companion object {
-        @JvmStatic private var sopInstance: SOP? = null
-
-        @JvmStatic
-        fun getSop(): SOP =
-            checkNotNull(sopInstance) { cliMsg.getString("sop.error.runtime.no_backend_set") }
-
-        @JvmStatic
-        fun setSopInstance(sop: SOP?) {
-            sopInstance = sop
-        }
-
-        @JvmField var cliMsg: ResourceBundle = ResourceBundle.getBundle("msg_sop")
-
-        @JvmField var EXECUTABLE_NAME = "sop"
-
-        @JvmField
-        @Option(names = ["--stacktrace"], scope = CommandLine.ScopeType.INHERIT)
-        var stacktrace = false
-
-        @JvmStatic
-        fun main(vararg args: String) {
-            val exitCode = execute(*args)
-            if (exitCode != 0) {
-                exitProcess(exitCode)
-            }
-        }
-
-        @JvmStatic
-        fun execute(vararg args: String): Int {
-            // Set locale
-            CommandLine(InitLocale()).parseArgs(*args)
-
-            // Re-set bundle with updated locale
-            cliMsg = ResourceBundle.getBundle("msg_sop")
-
-            return CommandLine(SopCLI::class.java)
-                .apply {
-                    // explicitly set help command resource bundle
-                    subcommands["help"]?.setResourceBundle(ResourceBundle.getBundle("msg_help"))
-                    // Hide generate-completion command
-                    subcommands["generate-completion"]?.commandSpec?.usageMessage()?.hidden(true)
-                    // overwrite executable name
-                    commandName = EXECUTABLE_NAME
-                    // setup exception handling
-                    executionExceptionHandler = SOPExecutionExceptionHandler()
-                    exitCodeExceptionMapper = SOPExceptionExitCodeMapper()
-                    isCaseInsensitiveEnumValuesAllowed = true
-                }
-                .execute(*args)
-        }
-    }
-
-    /**
-     * Control the locale.
-     *
-     * @see <a href="https://picocli.info/#_controlling_the_locale">Picocli Readme</a>
-     */
-    @Command
-    class InitLocale {
-        @Option(names = ["-l", "--locale"], descriptionKey = "sop.locale")
-        fun setLocale(locale: String) = Locale.setDefault(Locale(locale))
-
-        @Unmatched
-        var remainder: MutableList<String> =
-            mutableListOf() // ignore any other parameters and options in the first parsing phase
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/SopVCLI.kt

@@ -1,98 +0,0 @@
-// SPDX-FileCopyrightText: 2024 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli
-
-import java.util.*
-import kotlin.system.exitProcess
-import picocli.AutoComplete
-import picocli.CommandLine
-import sop.SOPV
-import sop.cli.picocli.commands.*
-import sop.exception.SOPGPException
-
-@CommandLine.Command(
-    name = "sopv",
-    resourceBundle = "msg_sop",
-    exitCodeOnInvalidInput = SOPGPException.UnsupportedSubcommand.EXIT_CODE,
-    subcommands =
-        [
-            // Meta subcommands
-            VersionCmd::class,
-            // signature verification subcommands
-            VerifyCmd::class,
-            InlineVerifyCmd::class,
-            // misc
-            CommandLine.HelpCommand::class,
-            AutoComplete.GenerateCompletion::class])
-class SopVCLI {
-
-    companion object {
-        @JvmStatic private var sopvInstance: SOPV? = null
-
-        @JvmStatic
-        fun getSopV(): SOPV =
-            checkNotNull(sopvInstance) { cliMsg.getString("sop.error.runtime.no_backend_set") }
-
-        @JvmStatic
-        fun setSopVInstance(sopv: SOPV?) {
-            sopvInstance = sopv
-        }
-
-        @JvmField var cliMsg: ResourceBundle = ResourceBundle.getBundle("msg_sop")
-
-        @JvmField var EXECUTABLE_NAME = "sopv"
-
-        @JvmField
-        @CommandLine.Option(names = ["--stacktrace"], scope = CommandLine.ScopeType.INHERIT)
-        var stacktrace = false
-
-        @JvmStatic
-        fun main(vararg args: String) {
-            val exitCode = execute(*args)
-            if (exitCode != 0) {
-                exitProcess(exitCode)
-            }
-        }
-
-        @JvmStatic
-        fun execute(vararg args: String): Int {
-            // Set locale
-            CommandLine(InitLocale()).parseArgs(*args)
-
-            // Re-set bundle with updated locale
-            cliMsg = ResourceBundle.getBundle("msg_sop")
-
-            return CommandLine(SopVCLI::class.java)
-                .apply {
-                    // explicitly set help command resource bundle
-                    subcommands["help"]?.setResourceBundle(ResourceBundle.getBundle("msg_help"))
-                    // Hide generate-completion command
-                    subcommands["generate-completion"]?.commandSpec?.usageMessage()?.hidden(true)
-                    // overwrite executable name
-                    commandName = EXECUTABLE_NAME
-                    // setup exception handling
-                    executionExceptionHandler = SOPExecutionExceptionHandler()
-                    exitCodeExceptionMapper = SOPExceptionExitCodeMapper()
-                    isCaseInsensitiveEnumValuesAllowed = true
-                }
-                .execute(*args)
-        }
-    }
-
-    /**
-     * Control the locale.
-     *
-     * @see <a href="https://picocli.info/#_controlling_the_locale">Picocli Readme</a>
-     */
-    @CommandLine.Command
-    class InitLocale {
-        @CommandLine.Option(names = ["-l", "--locale"], descriptionKey = "sop.locale")
-        fun setLocale(locale: String) = Locale.setDefault(Locale(locale))
-
-        @CommandLine.Unmatched
-        var remainder: MutableList<String> =
-            mutableListOf() // ignore any other parameters and options in the first parsing phase
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/AbstractSopCmd.kt

@@ -1,248 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands
-
-import java.io.*
-import java.text.ParseException
-import java.util.*
-import sop.cli.picocli.commands.AbstractSopCmd.EnvironmentVariableResolver
-import sop.exception.SOPGPException.*
-import sop.util.UTCUtil.Companion.parseUTCDate
-import sop.util.UTF8Util.Companion.decodeUTF8
-
-/** Abstract super class of SOP subcommands. */
-abstract class AbstractSopCmd(locale: Locale = Locale.getDefault()) : Runnable {
-
-    private val messages: ResourceBundle = ResourceBundle.getBundle("msg_sop", locale)
-    var environmentVariableResolver = EnvironmentVariableResolver { name: String ->
-        System.getenv(name)
-    }
-
-    /** Interface to modularize resolving of environment variables. */
-    fun interface EnvironmentVariableResolver {
-
-        /**
-         * Resolve the value of the given environment variable. Return null if the variable is not
-         * present.
-         *
-         * @param name name of the variable
-         * @return variable value or null
-         */
-        fun resolveEnvironmentVariable(name: String): String?
-    }
-
-    fun throwIfOutputExists(output: String?) {
-        output
-            ?.let { File(it) }
-            ?.let {
-                if (it.exists()) {
-                    val errorMsg: String =
-                        getMsg(
-                            "sop.error.indirect_data_type.output_file_already_exists",
-                            it.absolutePath)
-                    throw OutputExists(errorMsg)
-                }
-            }
-    }
-
-    fun getMsg(key: String): String = messages.getString(key)
-
-    fun getMsg(key: String, vararg args: String): String {
-        val msg = messages.getString(key)
-        return String.format(msg, *args)
-    }
-
-    fun throwIfMissingArg(arg: Any?, argName: String) {
-        if (arg == null) {
-            val errorMsg = getMsg("sop.error.usage.argument_required", argName)
-            throw MissingArg(errorMsg)
-        }
-    }
-
-    fun throwIfEmptyParameters(arg: Collection<*>, parmName: String) {
-        if (arg.isEmpty()) {
-            val errorMsg = getMsg("sop.error.usage.parameter_required", parmName)
-            throw MissingArg(errorMsg)
-        }
-    }
-
-    fun <T> throwIfUnsupportedSubcommand(subcommand: T?, subcommandName: String): T {
-        if (subcommand == null) {
-            val errorMsg =
-                getMsg("sop.error.feature_support.subcommand_not_supported", subcommandName)
-            throw UnsupportedSubcommand(errorMsg)
-        }
-        return subcommand
-    }
-
-    @Throws(IOException::class)
-    fun getInput(indirectInput: String): InputStream {
-        val trimmed = indirectInput.trim()
-        require(trimmed.isNotBlank()) { "Input cannot be blank." }
-
-        if (trimmed.startsWith(PRFX_ENV)) {
-            if (File(trimmed).exists()) {
-                val errorMsg = getMsg("sop.error.indirect_data_type.ambiguous_filename", trimmed)
-                throw AmbiguousInput(errorMsg)
-            }
-
-            val envName = trimmed.substring(PRFX_ENV.length)
-            val envValue = environmentVariableResolver.resolveEnvironmentVariable(envName)
-            requireNotNull(envValue) {
-                getMsg("sop.error.indirect_data_type.environment_variable_not_set", envName)
-            }
-
-            require(envValue.trim().isNotEmpty()) {
-                getMsg("sop.error.indirect_data_type.environment_variable_empty", envName)
-            }
-
-            return envValue.byteInputStream()
-        } else if (trimmed.startsWith(PRFX_FD)) {
-
-            if (File(trimmed).exists()) {
-                val errorMsg = getMsg("sop.error.indirect_data_type.ambiguous_filename", trimmed)
-                throw AmbiguousInput(errorMsg)
-            }
-
-            val fdFile: File = fileDescriptorFromString(trimmed)
-            return try {
-                fdFile.inputStream()
-            } catch (e: FileNotFoundException) {
-                val errorMsg =
-                    getMsg(
-                        "sop.error.indirect_data_type.file_descriptor_not_found",
-                        fdFile.absolutePath)
-                throw IOException(errorMsg, e)
-            }
-        } else {
-
-            val file = File(trimmed)
-            if (!file.exists()) {
-                val errorMsg =
-                    getMsg(
-                        "sop.error.indirect_data_type.input_file_does_not_exist", file.absolutePath)
-                throw MissingInput(errorMsg)
-            }
-            if (!file.isFile()) {
-                val errorMsg =
-                    getMsg("sop.error.indirect_data_type.input_not_a_file", file.absolutePath)
-                throw MissingInput(errorMsg)
-            }
-            return file.inputStream()
-        }
-    }
-
-    @Throws(IOException::class)
-    fun getOutput(indirectOutput: String?): OutputStream {
-        requireNotNull(indirectOutput) { "Output cannot be null." }
-        val trimmed = indirectOutput.trim()
-        require(trimmed.isNotEmpty()) { "Output cannot be blank." }
-
-        // @ENV not allowed for output
-        if (trimmed.startsWith(PRFX_ENV)) {
-            val errorMsg = getMsg("sop.error.indirect_data_type.illegal_use_of_env_designator")
-            throw UnsupportedSpecialPrefix(errorMsg)
-        }
-
-        // File Descriptor
-        if (trimmed.startsWith(PRFX_FD)) {
-            val fdFile = fileDescriptorFromString(trimmed)
-            return try {
-                fdFile.outputStream()
-            } catch (e: FileNotFoundException) {
-                val errorMsg =
-                    getMsg(
-                        "sop.error.indirect_data_type.file_descriptor_not_found",
-                        fdFile.absolutePath)
-                throw IOException(errorMsg, e)
-            }
-        }
-        val file = File(trimmed)
-        if (file.exists()) {
-            val errorMsg =
-                getMsg("sop.error.indirect_data_type.output_file_already_exists", file.absolutePath)
-            throw OutputExists(errorMsg)
-        }
-        if (!file.createNewFile()) {
-            val errorMsg =
-                getMsg(
-                    "sop.error.indirect_data_type.output_file_cannot_be_created", file.absolutePath)
-            throw IOException(errorMsg)
-        }
-        return file.outputStream()
-    }
-
-    fun fileDescriptorFromString(fdString: String): File {
-        val fdDir = File("/dev/fd/")
-        if (!fdDir.exists()) {
-            val errorMsg = getMsg("sop.error.indirect_data_type.designator_fd_not_supported")
-            throw UnsupportedSpecialPrefix(errorMsg)
-        }
-        val fdNumber = fdString.substring(PRFX_FD.length)
-        require(PATTERN_FD.matcher(fdNumber).matches()) {
-            "File descriptor must be a positive number."
-        }
-        return File(fdDir, fdNumber)
-    }
-
-    fun parseNotAfter(notAfter: String): Date {
-        return when (notAfter) {
-            "now" -> Date()
-            "-" -> END_OF_TIME
-            else ->
-                try {
-                    parseUTCDate(notAfter)
-                } catch (e: ParseException) {
-                    val errorMsg = getMsg("sop.error.input.malformed_not_after")
-                    throw IllegalArgumentException(errorMsg)
-                }
-        }
-    }
-
-    fun parseNotBefore(notBefore: String): Date {
-        return when (notBefore) {
-            "now" -> Date()
-            "-" -> DAWN_OF_TIME
-            else ->
-                try {
-                    parseUTCDate(notBefore)
-                } catch (e: ParseException) {
-                    val errorMsg = getMsg("sop.error.input.malformed_not_before")
-                    throw IllegalArgumentException(errorMsg)
-                }
-        }
-    }
-
-    companion object {
-        const val PRFX_ENV = "@ENV:"
-
-        const val PRFX_FD = "@FD:"
-
-        @JvmField val DAWN_OF_TIME = Date(0)
-
-        @JvmField
-        @Deprecated("Replace with DAWN_OF_TIME", ReplaceWith("DAWN_OF_TIME"))
-        val BEGINNING_OF_TIME = DAWN_OF_TIME
-
-        @JvmField val END_OF_TIME = Date(8640000000000000L)
-
-        @JvmField val PATTERN_FD = "^\\d{1,20}$".toPattern()
-
-        @Throws(IOException::class)
-        @JvmStatic
-        fun stringFromInputStream(inputStream: InputStream): String {
-            return inputStream.use { input ->
-                val byteOut = ByteArrayOutputStream()
-                val buf = ByteArray(4096)
-                var read: Int
-                while (input.read(buf).also { read = it } != -1) {
-                    byteOut.write(buf, 0, read)
-                }
-                // TODO: For decrypt operations we MUST accept non-UTF8 passwords
-                decodeUTF8(byteOut.toByteArray())
-            }
-        }
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/ArmorCmd.kt

@@ -1,32 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands
-
-import java.io.IOException
-import picocli.CommandLine.Command
-import sop.cli.picocli.SopCLI
-import sop.exception.SOPGPException.BadData
-import sop.exception.SOPGPException.UnsupportedOption
-
-@Command(
-    name = "armor",
-    resourceBundle = "msg_armor",
-    exitCodeOnInvalidInput = UnsupportedOption.EXIT_CODE)
-class ArmorCmd : AbstractSopCmd() {
-
-    override fun run() {
-        val armor = throwIfUnsupportedSubcommand(SopCLI.getSop().armor(), "armor")
-
-        try {
-            val ready = armor.data(System.`in`)
-            ready.writeTo(System.out)
-        } catch (badData: BadData) {
-            val errorMsg = getMsg("sop.error.input.stdin_not_openpgp_data")
-            throw BadData(errorMsg, badData)
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        }
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/ChangeKeyPasswordCmd.kt

@@ -1,46 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands
-
-import java.io.IOException
-import java.lang.RuntimeException
-import picocli.CommandLine.Command
-import picocli.CommandLine.Option
-import sop.cli.picocli.SopCLI
-import sop.exception.SOPGPException
-
-@Command(
-    name = "change-key-password",
-    resourceBundle = "msg_change-key-password",
-    exitCodeOnInvalidInput = SOPGPException.UnsupportedOption.EXIT_CODE)
-class ChangeKeyPasswordCmd : AbstractSopCmd() {
-
-    @Option(names = ["--no-armor"], negatable = true) var armor: Boolean = true
-
-    @Option(names = ["--old-key-password"], paramLabel = "PASSWORD")
-    var oldKeyPasswords: List<String> = listOf()
-
-    @Option(names = ["--new-key-password"], arity = "0..1", paramLabel = "PASSWORD")
-    var newKeyPassword: String? = null
-
-    override fun run() {
-        val changeKeyPassword =
-            throwIfUnsupportedSubcommand(SopCLI.getSop().changeKeyPassword(), "change-key-password")
-
-        if (!armor) {
-            changeKeyPassword.noArmor()
-        }
-
-        oldKeyPasswords.forEach { changeKeyPassword.oldKeyPassphrase(it) }
-
-        newKeyPassword?.let { changeKeyPassword.newKeyPassphrase(it) }
-
-        try {
-            changeKeyPassword.keys(System.`in`).writeTo(System.out)
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        }
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/DearmorCmd.kt

@@ -1,41 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands
-
-import java.io.IOException
-import picocli.CommandLine.Command
-import sop.cli.picocli.SopCLI
-import sop.exception.SOPGPException
-import sop.exception.SOPGPException.BadData
-
-@Command(
-    name = "dearmor",
-    resourceBundle = "msg_dearmor",
-    exitCodeOnInvalidInput = SOPGPException.UnsupportedOption.EXIT_CODE)
-class DearmorCmd : AbstractSopCmd() {
-
-    override fun run() {
-        val dearmor = throwIfUnsupportedSubcommand(SopCLI.getSop().dearmor(), "dearmor")
-
-        try {
-            dearmor.data(System.`in`).writeTo(System.out)
-        } catch (badData: BadData) {
-            val errorMsg = getMsg("sop.error.input.stdin_not_openpgp_data")
-            throw BadData(errorMsg, badData)
-        } catch (e: IOException) {
-            e.message?.let {
-                val errorMsg = getMsg("sop.error.input.stdin_not_openpgp_data")
-                if (it == "invalid armor" ||
-                    it == "invalid armor header" ||
-                    it == "inconsistent line endings in headers" ||
-                    it.startsWith("unable to decode base64 data")) {
-                    throw BadData(errorMsg, e)
-                }
-                throw RuntimeException(e)
-            }
-                ?: throw RuntimeException(e)
-        }
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/DecryptCmd.kt

@@ -1,224 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands
-
-import java.io.IOException
-import java.io.PrintWriter
-import picocli.CommandLine.*
-import sop.DecryptionResult
-import sop.SessionKey
-import sop.SessionKey.Companion.fromString
-import sop.cli.picocli.SopCLI
-import sop.exception.SOPGPException.*
-import sop.operation.Decrypt
-
-@Command(
-    name = "decrypt",
-    resourceBundle = "msg_decrypt",
-    exitCodeOnInvalidInput = UnsupportedOption.EXIT_CODE)
-class DecryptCmd : AbstractSopCmd() {
-
-    @Option(names = [OPT_SESSION_KEY_OUT], paramLabel = "SESSIONKEY")
-    var sessionKeyOut: String? = null
-
-    @Option(names = [OPT_WITH_SESSION_KEY], paramLabel = "SESSIONKEY")
-    var withSessionKey: List<String> = listOf()
-
-    @Option(names = [OPT_WITH_PASSWORD], paramLabel = "PASSWORD")
-    var withPassword: List<String> = listOf()
-
-    @Option(names = [OPT_VERIFICATIONS_OUT], paramLabel = "VERIFICATIONS")
-    var verifyOut: String? = null
-
-    @Option(names = [OPT_VERIFY_WITH], paramLabel = "CERT") var certs: List<String> = listOf()
-
-    @Option(names = [OPT_NOT_BEFORE], paramLabel = "DATE") var notBefore = "-"
-
-    @Option(names = [OPT_NOT_AFTER], paramLabel = "DATE") var notAfter = "now"
-
-    @Parameters(index = "0..*", paramLabel = "KEY") var keys: List<String> = listOf()
-
-    @Option(names = [OPT_WITH_KEY_PASSWORD], paramLabel = "PASSWORD")
-    var withKeyPassword: List<String> = listOf()
-
-    override fun run() {
-        val decrypt = throwIfUnsupportedSubcommand(SopCLI.getSop().decrypt(), "decrypt")
-
-        throwIfOutputExists(verifyOut)
-        throwIfOutputExists(sessionKeyOut)
-
-        setNotAfter(notAfter, decrypt)
-        setNotBefore(notBefore, decrypt)
-        setWithPasswords(withPassword, decrypt)
-        setWithSessionKeys(withSessionKey, decrypt)
-        setWithKeyPassword(withKeyPassword, decrypt)
-        setVerifyWith(certs, decrypt)
-        setDecryptWith(keys, decrypt)
-
-        if (verifyOut != null && certs.isEmpty()) {
-            val errorMsg =
-                getMsg(
-                    "sop.error.usage.option_requires_other_option",
-                    OPT_VERIFICATIONS_OUT,
-                    OPT_VERIFY_WITH)
-            throw IncompleteVerification(errorMsg)
-        }
-
-        try {
-            val ready = decrypt.ciphertext(System.`in`)
-            val result = ready.writeTo(System.out)
-            writeSessionKeyOut(result)
-            writeVerifyOut(result)
-        } catch (badData: BadData) {
-            val errorMsg = getMsg("sop.error.input.stdin_not_a_message")
-            throw BadData(errorMsg, badData)
-        } catch (e: CannotDecrypt) {
-            val errorMsg = getMsg("sop.error.runtime.cannot_decrypt_message")
-            throw CannotDecrypt(errorMsg, e)
-        } catch (ioException: IOException) {
-            throw RuntimeException(ioException)
-        }
-    }
-
-    @Throws(IOException::class)
-    private fun writeVerifyOut(result: DecryptionResult) {
-        verifyOut?.let {
-            getOutput(it).use { out ->
-                PrintWriter(out).use { pw ->
-                    result.verifications.forEach { verification -> pw.println(verification) }
-                }
-            }
-        }
-    }
-
-    @Throws(IOException::class)
-    private fun writeSessionKeyOut(result: DecryptionResult) {
-        sessionKeyOut?.let { fileName ->
-            getOutput(fileName).use { out ->
-                if (!result.sessionKey.isPresent) {
-                    val errorMsg = getMsg("sop.error.runtime.no_session_key_extracted")
-                    throw UnsupportedOption(String.format(errorMsg, OPT_SESSION_KEY_OUT))
-                }
-
-                PrintWriter(out).use { it.println(result.sessionKey.get()!!) }
-            }
-        }
-    }
-
-    private fun setDecryptWith(keys: List<String>, decrypt: Decrypt) {
-        for (key in keys) {
-            try {
-                getInput(key).use { decrypt.withKey(it) }
-            } catch (keyIsProtected: KeyIsProtected) {
-                val errorMsg = getMsg("sop.error.runtime.cannot_unlock_key", key)
-                throw KeyIsProtected(errorMsg, keyIsProtected)
-            } catch (badData: BadData) {
-                val errorMsg = getMsg("sop.error.input.not_a_private_key", key)
-                throw BadData(errorMsg, badData)
-            } catch (e: IOException) {
-                throw RuntimeException(e)
-            }
-        }
-    }
-
-    private fun setVerifyWith(certs: List<String>, decrypt: Decrypt) {
-        for (cert in certs) {
-            try {
-                getInput(cert).use { certIn -> decrypt.verifyWithCert(certIn) }
-            } catch (badData: BadData) {
-                val errorMsg = getMsg("sop.error.input.not_a_certificate", cert)
-                throw BadData(errorMsg, badData)
-            } catch (ioException: IOException) {
-                throw RuntimeException(ioException)
-            }
-        }
-    }
-
-    private fun setWithSessionKeys(withSessionKey: List<String>, decrypt: Decrypt) {
-        for (sessionKeyFile in withSessionKey) {
-            val sessionKeyString: String =
-                try {
-                    stringFromInputStream(getInput(sessionKeyFile))
-                } catch (e: IOException) {
-                    throw RuntimeException(e)
-                }
-            val sessionKey: SessionKey =
-                try {
-                    fromString(sessionKeyString)
-                } catch (e: IllegalArgumentException) {
-                    val errorMsg = getMsg("sop.error.input.malformed_session_key")
-                    throw IllegalArgumentException(errorMsg, e)
-                }
-            try {
-                decrypt.withSessionKey(sessionKey)
-            } catch (unsupportedOption: UnsupportedOption) {
-                val errorMsg =
-                    getMsg("sop.error.feature_support.option_not_supported", OPT_WITH_SESSION_KEY)
-                throw UnsupportedOption(errorMsg, unsupportedOption)
-            }
-        }
-    }
-
-    private fun setWithPasswords(withPassword: List<String>, decrypt: Decrypt) {
-        for (passwordFile in withPassword) {
-            try {
-                val password = stringFromInputStream(getInput(passwordFile))
-                decrypt.withPassword(password)
-            } catch (unsupportedOption: UnsupportedOption) {
-                val errorMsg =
-                    getMsg("sop.error.feature_support.option_not_supported", OPT_WITH_PASSWORD)
-                throw UnsupportedOption(errorMsg, unsupportedOption)
-            } catch (e: IOException) {
-                throw RuntimeException(e)
-            }
-        }
-    }
-
-    private fun setWithKeyPassword(withKeyPassword: List<String>, decrypt: Decrypt) {
-        for (passwordFile in withKeyPassword) {
-            try {
-                val password = stringFromInputStream(getInput(passwordFile))
-                decrypt.withKeyPassword(password)
-            } catch (unsupportedOption: UnsupportedOption) {
-                val errorMsg =
-                    getMsg("sop.error.feature_support.option_not_supported", OPT_WITH_KEY_PASSWORD)
-                throw UnsupportedOption(errorMsg, unsupportedOption)
-            } catch (e: IOException) {
-                throw RuntimeException(e)
-            }
-        }
-    }
-
-    private fun setNotAfter(notAfter: String, decrypt: Decrypt) {
-        val notAfterDate = parseNotAfter(notAfter)
-        try {
-            decrypt.verifyNotAfter(notAfterDate)
-        } catch (unsupportedOption: UnsupportedOption) {
-            val errorMsg = getMsg("sop.error.feature_support.option_not_supported", OPT_NOT_AFTER)
-            throw UnsupportedOption(errorMsg, unsupportedOption)
-        }
-    }
-
-    private fun setNotBefore(notBefore: String, decrypt: Decrypt) {
-        val notBeforeDate = parseNotBefore(notBefore)
-        try {
-            decrypt.verifyNotBefore(notBeforeDate)
-        } catch (unsupportedOption: UnsupportedOption) {
-            val errorMsg = getMsg("sop.error.feature_support.option_not_supported", OPT_NOT_BEFORE)
-            throw UnsupportedOption(errorMsg, unsupportedOption)
-        }
-    }
-
-    companion object {
-        const val OPT_SESSION_KEY_OUT = "--session-key-out"
-        const val OPT_WITH_SESSION_KEY = "--with-session-key"
-        const val OPT_WITH_PASSWORD = "--with-password"
-        const val OPT_WITH_KEY_PASSWORD = "--with-key-password"
-        const val OPT_VERIFICATIONS_OUT = "--verifications-out"
-        const val OPT_VERIFY_WITH = "--verify-with"
-        const val OPT_NOT_BEFORE = "--verify-not-before"
-        const val OPT_NOT_AFTER = "--verify-not-after"
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/EncryptCmd.kt

@@ -1,159 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands
-
-import java.io.IOException
-import java.io.PrintWriter
-import picocli.CommandLine.*
-import sop.cli.picocli.SopCLI
-import sop.enums.EncryptAs
-import sop.exception.SOPGPException.*
-
-@Command(
-    name = "encrypt",
-    resourceBundle = "msg_encrypt",
-    exitCodeOnInvalidInput = UnsupportedOption.EXIT_CODE)
-class EncryptCmd : AbstractSopCmd() {
-
-    @Option(names = ["--no-armor"], negatable = true) var armor = true
-
-    @Option(names = ["--as"], paramLabel = "{binary|text}") var type: EncryptAs? = null
-
-    @Option(names = ["--with-password"], paramLabel = "PASSWORD")
-    var withPassword: List<String> = listOf()
-
-    @Option(names = ["--sign-with"], paramLabel = "KEY") var signWith: List<String> = listOf()
-
-    @Option(names = ["--with-key-password"], paramLabel = "PASSWORD")
-    var withKeyPassword: List<String> = listOf()
-
-    @Option(names = ["--profile"], paramLabel = "PROFILE") var profile: String? = null
-
-    @Parameters(index = "0..*", paramLabel = "CERTS") var certs: List<String> = listOf()
-
-    @Option(names = ["--session-key-out"], paramLabel = "SESSIONKEY")
-    var sessionKeyOut: String? = null
-
-    override fun run() {
-        val encrypt = throwIfUnsupportedSubcommand(SopCLI.getSop().encrypt(), "encrypt")
-
-        throwIfOutputExists(sessionKeyOut)
-
-        profile?.let {
-            try {
-                encrypt.profile(it)
-            } catch (e: UnsupportedProfile) {
-                val errorMsg = getMsg("sop.error.usage.profile_not_supported", "encrypt", it)
-                throw UnsupportedProfile(errorMsg, e)
-            }
-        }
-
-        type?.let {
-            try {
-                encrypt.mode(it)
-            } catch (e: UnsupportedOption) {
-                val errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--as")
-                throw UnsupportedOption(errorMsg, e)
-            }
-        }
-
-        if (withPassword.isEmpty() && certs.isEmpty()) {
-            val errorMsg = getMsg("sop.error.usage.password_or_cert_required")
-            throw MissingArg(errorMsg)
-        }
-
-        for (passwordFileName in withPassword) {
-            try {
-                val password = stringFromInputStream(getInput(passwordFileName))
-                encrypt.withPassword(password)
-            } catch (unsupportedOption: UnsupportedOption) {
-                val errorMsg =
-                    getMsg("sop.error.feature_support.option_not_supported", "--with-password")
-                throw UnsupportedOption(errorMsg, unsupportedOption)
-            } catch (e: IOException) {
-                throw RuntimeException(e)
-            }
-        }
-
-        for (passwordFileName in withKeyPassword) {
-            try {
-                val password = stringFromInputStream(getInput(passwordFileName))
-                encrypt.withKeyPassword(password)
-            } catch (unsupportedOption: UnsupportedOption) {
-                val errorMsg =
-                    getMsg("sop.error.feature_support.option_not_supported", "--with-key-password")
-                throw UnsupportedOption(errorMsg, unsupportedOption)
-            } catch (e: IOException) {
-                throw RuntimeException(e)
-            }
-        }
-
-        for (keyInput in signWith) {
-            try {
-                getInput(keyInput).use { keyIn -> encrypt.signWith(keyIn) }
-            } catch (e: IOException) {
-                throw RuntimeException(e)
-            } catch (keyIsProtected: KeyIsProtected) {
-                val errorMsg = getMsg("sop.error.runtime.cannot_unlock_key", keyInput)
-                throw KeyIsProtected(errorMsg, keyIsProtected)
-            } catch (unsupportedAsymmetricAlgo: UnsupportedAsymmetricAlgo) {
-                val errorMsg =
-                    getMsg("sop.error.runtime.key_uses_unsupported_asymmetric_algorithm", keyInput)
-                throw UnsupportedAsymmetricAlgo(errorMsg, unsupportedAsymmetricAlgo)
-            } catch (keyCannotSign: KeyCannotSign) {
-                val errorMsg = getMsg("sop.error.runtime.key_cannot_sign", keyInput)
-                throw KeyCannotSign(errorMsg, keyCannotSign)
-            } catch (badData: BadData) {
-                val errorMsg = getMsg("sop.error.input.not_a_private_key", keyInput)
-                throw BadData(errorMsg, badData)
-            }
-        }
-
-        for (certInput in certs) {
-            try {
-                getInput(certInput).use { certIn -> encrypt.withCert(certIn) }
-            } catch (e: IOException) {
-                throw RuntimeException(e)
-            } catch (unsupportedAsymmetricAlgo: UnsupportedAsymmetricAlgo) {
-                val errorMsg =
-                    getMsg(
-                        "sop.error.runtime.cert_uses_unsupported_asymmetric_algorithm", certInput)
-                throw UnsupportedAsymmetricAlgo(errorMsg, unsupportedAsymmetricAlgo)
-            } catch (certCannotEncrypt: CertCannotEncrypt) {
-                val errorMsg = getMsg("sop.error.runtime.cert_cannot_encrypt", certInput)
-                throw CertCannotEncrypt(errorMsg, certCannotEncrypt)
-            } catch (badData: BadData) {
-                val errorMsg = getMsg("sop.error.input.not_a_certificate", certInput)
-                throw BadData(errorMsg, badData)
-            }
-        }
-
-        if (!armor) {
-            encrypt.noArmor()
-        }
-
-        try {
-            val ready = encrypt.plaintext(System.`in`)
-            val result = ready.writeTo(System.out)
-
-            if (sessionKeyOut == null) {
-                return
-            }
-
-            getOutput(sessionKeyOut).use {
-                if (!result.sessionKey.isPresent) {
-                    val errorMsg = getMsg("sop.error.runtime.no_session_key_extracted")
-                    throw UnsupportedOption(String.format(errorMsg, "--session-key-out"))
-                }
-                val sessionKey = result.sessionKey.get() ?: return
-                val writer = PrintWriter(it)
-                writer.println(sessionKey)
-                writer.flush()
-            }
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        }
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/ExtractCertCmd.kt

@@ -1,40 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands
-
-import java.io.IOException
-import picocli.CommandLine.Command
-import picocli.CommandLine.Option
-import sop.cli.picocli.SopCLI
-import sop.exception.SOPGPException
-import sop.exception.SOPGPException.BadData
-
-@Command(
-    name = "extract-cert",
-    resourceBundle = "msg_extract-cert",
-    exitCodeOnInvalidInput = SOPGPException.UnsupportedOption.EXIT_CODE)
-class ExtractCertCmd : AbstractSopCmd() {
-
-    @Option(names = ["--no-armor"], negatable = true) var armor = true
-
-    override fun run() {
-        val extractCert =
-            throwIfUnsupportedSubcommand(SopCLI.getSop().extractCert(), "extract-cert")
-
-        if (!armor) {
-            extractCert.noArmor()
-        }
-
-        try {
-            val ready = extractCert.key(System.`in`)
-            ready.writeTo(System.out)
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        } catch (badData: BadData) {
-            val errorMsg = getMsg("sop.error.input.stdin_not_a_private_key")
-            throw BadData(errorMsg, badData)
-        }
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/GenerateKeyCmd.kt

@@ -1,76 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands
-
-import java.io.IOException
-import picocli.CommandLine.*
-import sop.cli.picocli.SopCLI
-import sop.exception.SOPGPException.UnsupportedOption
-import sop.exception.SOPGPException.UnsupportedProfile
-
-@Command(
-    name = "generate-key",
-    resourceBundle = "msg_generate-key",
-    exitCodeOnInvalidInput = UnsupportedOption.EXIT_CODE)
-class GenerateKeyCmd : AbstractSopCmd() {
-
-    @Option(names = ["--no-armor"], negatable = true) var armor = true
-
-    @Parameters(paramLabel = "USERID") var userId: List<String> = listOf()
-
-    @Option(names = ["--with-key-password"], paramLabel = "PASSWORD")
-    var withKeyPassword: String? = null
-
-    @Option(names = ["--profile"], paramLabel = "PROFILE") var profile: String? = null
-
-    @Option(names = ["--signing-only"]) var signingOnly: Boolean = false
-
-    override fun run() {
-        val generateKey =
-            throwIfUnsupportedSubcommand(SopCLI.getSop().generateKey(), "generate-key")
-
-        profile?.let {
-            try {
-                generateKey.profile(it)
-            } catch (e: UnsupportedProfile) {
-                val errorMsg =
-                    getMsg("sop.error.usage.profile_not_supported", "generate-key", profile!!)
-                throw UnsupportedProfile(errorMsg, e)
-            }
-        }
-
-        if (signingOnly) {
-            generateKey.signingOnly()
-        }
-
-        for (userId in userId) {
-            generateKey.userId(userId)
-        }
-
-        if (!armor) {
-            generateKey.noArmor()
-        }
-
-        withKeyPassword?.let {
-            try {
-                val password = stringFromInputStream(getInput(it))
-                generateKey.withKeyPassword(password)
-            } catch (e: UnsupportedOption) {
-                val errorMsg =
-                    getMsg("sop.error.feature_support.option_not_supported", "--with-key-password")
-                throw UnsupportedOption(errorMsg, e)
-            } catch (e: IOException) {
-                throw RuntimeException(e)
-            }
-        }
-
-        try {
-            val ready = generateKey.generate()
-            ready.writeTo(System.out)
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        }
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/InlineDetachCmd.kt

@@ -1,47 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands
-
-import java.io.IOException
-import java.lang.RuntimeException
-import picocli.CommandLine.Command
-import picocli.CommandLine.Option
-import sop.cli.picocli.SopCLI
-import sop.exception.SOPGPException
-
-@Command(
-    name = "inline-detach",
-    resourceBundle = "msg_inline-detach",
-    exitCodeOnInvalidInput = SOPGPException.UnsupportedOption.EXIT_CODE)
-class InlineDetachCmd : AbstractSopCmd() {
-
-    @Option(names = ["--signatures-out"], paramLabel = "SIGNATURES")
-    var signaturesOut: String? = null
-
-    @Option(names = ["--no-armor"], negatable = true) var armor: Boolean = true
-
-    override fun run() {
-        val inlineDetach =
-            throwIfUnsupportedSubcommand(SopCLI.getSop().inlineDetach(), "inline-detach")
-
-        throwIfOutputExists(signaturesOut)
-        throwIfMissingArg(signaturesOut, "--signatures-out")
-
-        if (!armor) {
-            inlineDetach.noArmor()
-        }
-
-        try {
-            getOutput(signaturesOut).use { sigOut ->
-                inlineDetach
-                    .message(System.`in`)
-                    .writeTo(System.out) // message out
-                    .writeTo(sigOut) // signatures out
-            }
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        }
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/InlineSignCmd.kt

@@ -1,89 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands
-
-import java.io.IOException
-import picocli.CommandLine.*
-import sop.cli.picocli.SopCLI
-import sop.enums.InlineSignAs
-import sop.exception.SOPGPException.*
-
-@Command(
-    name = "inline-sign",
-    resourceBundle = "msg_inline-sign",
-    exitCodeOnInvalidInput = UnsupportedOption.EXIT_CODE)
-class InlineSignCmd : AbstractSopCmd() {
-
-    @Option(names = ["--no-armor"], negatable = true) var armor = true
-
-    @Option(names = ["--as"], paramLabel = "{binary|text|clearsigned}")
-    var type: InlineSignAs? = null
-
-    @Parameters(paramLabel = "KEYS") var secretKeyFile: List<String> = listOf()
-
-    @Option(names = ["--with-key-password"], paramLabel = "PASSWORD")
-    var withKeyPassword: List<String> = listOf()
-
-    override fun run() {
-        val inlineSign = throwIfUnsupportedSubcommand(SopCLI.getSop().inlineSign(), "inline-sign")
-
-        if (!armor && type == InlineSignAs.clearsigned) {
-            val errorMsg = getMsg("sop.error.usage.incompatible_options.clearsigned_no_armor")
-            throw IncompatibleOptions(errorMsg)
-        }
-
-        type?.let {
-            try {
-                inlineSign.mode(it)
-            } catch (unsupportedOption: UnsupportedOption) {
-                val errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--as")
-                throw UnsupportedOption(errorMsg, unsupportedOption)
-            }
-        }
-
-        if (secretKeyFile.isEmpty()) {
-            val errorMsg = getMsg("sop.error.usage.parameter_required", "KEYS")
-            throw MissingArg(errorMsg)
-        }
-
-        for (passwordFile in withKeyPassword) {
-            try {
-                val password = stringFromInputStream(getInput(passwordFile))
-                inlineSign.withKeyPassword(password)
-            } catch (unsupportedOption: UnsupportedOption) {
-                val errorMsg =
-                    getMsg("sop.error.feature_support.option_not_supported", "--with-key-password")
-                throw UnsupportedOption(errorMsg, unsupportedOption)
-            } catch (e: IOException) {
-                throw RuntimeException(e)
-            }
-        }
-
-        for (keyInput in secretKeyFile) {
-            try {
-                getInput(keyInput).use { keyIn -> inlineSign.key(keyIn) }
-            } catch (e: IOException) {
-                throw RuntimeException(e)
-            } catch (e: KeyIsProtected) {
-                val errorMsg = getMsg("sop.error.runtime.cannot_unlock_key", keyInput)
-                throw KeyIsProtected(errorMsg, e)
-            } catch (badData: BadData) {
-                val errorMsg = getMsg("sop.error.input.not_a_private_key", keyInput)
-                throw BadData(errorMsg, badData)
-            }
-        }
-
-        if (!armor) {
-            inlineSign.noArmor()
-        }
-
-        try {
-            val ready = inlineSign.data(System.`in`)
-            ready.writeTo(System.out)
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        }
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/InlineVerifyCmd.kt

@@ -1,93 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands
-
-import java.io.IOException
-import java.io.PrintWriter
-import picocli.CommandLine.*
-import sop.cli.picocli.SopCLI
-import sop.exception.SOPGPException.*
-
-@Command(
-    name = "inline-verify",
-    resourceBundle = "msg_inline-verify",
-    exitCodeOnInvalidInput = UnsupportedOption.EXIT_CODE)
-class InlineVerifyCmd : AbstractSopCmd() {
-
-    @Parameters(arity = "0..*", paramLabel = "CERT") var certificates: List<String> = listOf()
-
-    @Option(names = ["--not-before"], paramLabel = "DATE") var notBefore: String = "-"
-
-    @Option(names = ["--not-after"], paramLabel = "DATE") var notAfter: String = "now"
-
-    @Option(names = ["--verifications-out"], paramLabel = "VERIFICATIONS")
-    var verificationsOut: String? = null
-
-    override fun run() {
-        val inlineVerify =
-            throwIfUnsupportedSubcommand(SopCLI.getSop().inlineVerify(), "inline-verify")
-
-        throwIfOutputExists(verificationsOut)
-
-        try {
-            inlineVerify.notAfter(parseNotAfter(notAfter))
-        } catch (unsupportedOption: UnsupportedOption) {
-            val errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--not-after")
-            throw UnsupportedOption(errorMsg, unsupportedOption)
-        }
-
-        try {
-            inlineVerify.notBefore(parseNotBefore(notBefore))
-        } catch (unsupportedOption: UnsupportedOption) {
-            val errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--not-before")
-            throw UnsupportedOption(errorMsg, unsupportedOption)
-        }
-
-        for (certInput in certificates) {
-            try {
-                getInput(certInput).use { certIn -> inlineVerify.cert(certIn) }
-            } catch (ioException: IOException) {
-                throw RuntimeException(ioException)
-            } catch (unsupportedAsymmetricAlgo: UnsupportedAsymmetricAlgo) {
-                val errorMsg =
-                    getMsg(
-                        "sop.error.runtime.cert_uses_unsupported_asymmetric_algorithm", certInput)
-                throw UnsupportedAsymmetricAlgo(errorMsg, unsupportedAsymmetricAlgo)
-            } catch (badData: BadData) {
-                val errorMsg = getMsg("sop.error.input.not_a_certificate", certInput)
-                throw BadData(errorMsg, badData)
-            }
-        }
-
-        val verifications =
-            try {
-                val ready = inlineVerify.data(System.`in`)
-                ready.writeTo(System.out)
-            } catch (e: NoSignature) {
-                val errorMsg = getMsg("sop.error.runtime.no_verifiable_signature_found")
-                throw NoSignature(errorMsg, e)
-            } catch (ioException: IOException) {
-                throw RuntimeException(ioException)
-            } catch (badData: BadData) {
-                val errorMsg = getMsg("sop.error.input.stdin_not_a_message")
-                throw BadData(errorMsg, badData)
-            }
-
-        verificationsOut?.let {
-            try {
-                getOutput(it).use { outputStream ->
-                    val pw = PrintWriter(outputStream)
-                    for (verification in verifications) {
-                        pw.println(verification)
-                    }
-                    pw.flush()
-                    pw.close()
-                }
-            } catch (e: IOException) {
-                throw RuntimeException(e)
-            }
-        }
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/ListProfilesCmd.kt

@@ -1,34 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands
-
-import picocli.CommandLine.Command
-import picocli.CommandLine.Parameters
-import sop.cli.picocli.SopCLI
-import sop.exception.SOPGPException
-import sop.exception.SOPGPException.UnsupportedProfile
-
-@Command(
-    name = "list-profiles",
-    resourceBundle = "msg_list-profiles",
-    exitCodeOnInvalidInput = SOPGPException.UnsupportedOption.EXIT_CODE)
-class ListProfilesCmd : AbstractSopCmd() {
-
-    @Parameters(paramLabel = "COMMAND", arity = "1", descriptionKey = "subcommand")
-    lateinit var subcommand: String
-
-    override fun run() {
-        val listProfiles =
-            throwIfUnsupportedSubcommand(SopCLI.getSop().listProfiles(), "list-profiles")
-
-        try {
-            listProfiles.subcommand(subcommand).forEach { println(it) }
-        } catch (e: UnsupportedProfile) {
-            val errorMsg =
-                getMsg("sop.error.feature_support.subcommand_does_not_support_profiles", subcommand)
-            throw UnsupportedProfile(errorMsg, e)
-        }
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/RevokeKeyCmd.kt

@@ -1,58 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands
-
-import java.io.IOException
-import picocli.CommandLine.Command
-import picocli.CommandLine.Option
-import sop.cli.picocli.SopCLI
-import sop.exception.SOPGPException
-import sop.exception.SOPGPException.KeyIsProtected
-
-@Command(
-    name = "revoke-key",
-    resourceBundle = "msg_revoke-key",
-    exitCodeOnInvalidInput = SOPGPException.UnsupportedOption.EXIT_CODE)
-class RevokeKeyCmd : AbstractSopCmd() {
-
-    @Option(names = ["--no-armor"], negatable = true) var armor = true
-
-    @Option(names = ["--with-key-password"], paramLabel = "PASSWORD", arity = "0..*")
-    var withKeyPassword: List<String> = listOf()
-
-    override fun run() {
-        val revokeKey = throwIfUnsupportedSubcommand(SopCLI.getSop().revokeKey(), "revoke-key")
-
-        if (!armor) {
-            revokeKey.noArmor()
-        }
-
-        for (passwordIn in withKeyPassword) {
-            try {
-                val password = stringFromInputStream(getInput(passwordIn))
-                revokeKey.withKeyPassword(password)
-            } catch (e: SOPGPException.UnsupportedOption) {
-                val errorMsg =
-                    getMsg("sop.error.feature_support.option_not_supported", "--with-key-password")
-                throw SOPGPException.UnsupportedOption(errorMsg, e)
-            } catch (e: IOException) {
-                throw RuntimeException(e)
-            }
-        }
-
-        val ready =
-            try {
-                revokeKey.keys(System.`in`)
-            } catch (e: KeyIsProtected) {
-                val errorMsg = getMsg("sop.error.runtime.cannot_unlock_key", "STANDARD_IN")
-                throw KeyIsProtected(errorMsg, e)
-            }
-        try {
-            ready.writeTo(System.out)
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        }
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/SignCmd.kt

@@ -1,90 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands
-
-import java.io.IOException
-import picocli.CommandLine.*
-import sop.cli.picocli.SopCLI
-import sop.enums.SignAs
-import sop.exception.SOPGPException
-import sop.exception.SOPGPException.BadData
-import sop.exception.SOPGPException.KeyIsProtected
-
-@Command(
-    name = "sign",
-    resourceBundle = "msg_detached-sign",
-    exitCodeOnInvalidInput = SOPGPException.UnsupportedOption.EXIT_CODE)
-class SignCmd : AbstractSopCmd() {
-
-    @Option(names = ["--no-armor"], negatable = true) var armor: Boolean = true
-
-    @Option(names = ["--as"], paramLabel = "{binary|text}") var type: SignAs? = null
-
-    @Parameters(paramLabel = "KEYS") var secretKeyFile: List<String> = listOf()
-
-    @Option(names = ["--with-key-password"], paramLabel = "PASSWORD")
-    var withKeyPassword: List<String> = listOf()
-
-    @Option(names = ["--micalg-out"], paramLabel = "MICALG") var micAlgOut: String? = null
-
-    override fun run() {
-        val detachedSign = throwIfUnsupportedSubcommand(SopCLI.getSop().detachedSign(), "sign")
-
-        throwIfOutputExists(micAlgOut)
-        throwIfEmptyParameters(secretKeyFile, "KEYS")
-
-        try {
-            type?.let { detachedSign.mode(it) }
-        } catch (unsupported: SOPGPException.UnsupportedOption) {
-            val errorMsg =
-                getMsg("sop.error.feature_support.option_not_supported", "--with-key-password")
-            throw SOPGPException.UnsupportedOption(errorMsg, unsupported)
-        } catch (ioe: IOException) {
-            throw RuntimeException(ioe)
-        }
-
-        withKeyPassword.forEach { passIn ->
-            try {
-                val password = stringFromInputStream(getInput(passIn))
-                detachedSign.withKeyPassword(password)
-            } catch (unsupported: SOPGPException.UnsupportedOption) {
-                val errorMsg =
-                    getMsg("sop.error.feature_support.option_not_supported", "--with-key-password")
-                throw SOPGPException.UnsupportedOption(errorMsg, unsupported)
-            } catch (e: IOException) {
-                throw RuntimeException(e)
-            }
-        }
-
-        secretKeyFile.forEach { keyIn ->
-            try {
-                getInput(keyIn).use { input -> detachedSign.key(input) }
-            } catch (ioe: IOException) {
-                throw RuntimeException(ioe)
-            } catch (keyIsProtected: KeyIsProtected) {
-                val errorMsg = getMsg("sop.error.runtime.cannot_unlock_key", keyIn)
-                throw KeyIsProtected(errorMsg, keyIsProtected)
-            } catch (badData: BadData) {
-                val errorMsg = getMsg("sop.error.input.not_a_private_key", keyIn)
-                throw BadData(errorMsg, badData)
-            }
-        }
-
-        if (!armor) {
-            detachedSign.noArmor()
-        }
-
-        try {
-            val ready = detachedSign.data(System.`in`)
-            val result = ready.writeTo(System.out)
-
-            if (micAlgOut != null) {
-                getOutput(micAlgOut).use { result.micAlg.writeTo(it) }
-            }
-        } catch (e: IOException) {
-            throw java.lang.RuntimeException(e)
-        }
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/VerifyCmd.kt

@@ -1,81 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands
-
-import java.io.IOException
-import picocli.CommandLine.*
-import sop.cli.picocli.SopCLI
-import sop.exception.SOPGPException.*
-
-@Command(
-    name = "verify",
-    resourceBundle = "msg_detached-verify",
-    exitCodeOnInvalidInput = UnsupportedOption.EXIT_CODE)
-class VerifyCmd : AbstractSopCmd() {
-
-    @Parameters(index = "0", paramLabel = "SIGNATURE") lateinit var signature: String
-
-    @Parameters(index = "1..*", arity = "1..*", paramLabel = "CERT")
-    lateinit var certificates: List<String>
-
-    @Option(names = ["--not-before"], paramLabel = "DATE") var notBefore: String = "-"
-
-    @Option(names = ["--not-after"], paramLabel = "DATE") var notAfter: String = "now"
-
-    override fun run() {
-        val detachedVerify =
-            throwIfUnsupportedSubcommand(SopCLI.getSop().detachedVerify(), "verify")
-        try {
-            detachedVerify.notAfter(parseNotAfter(notAfter))
-        } catch (unsupportedOption: UnsupportedOption) {
-            val errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--not-after")
-            throw UnsupportedOption(errorMsg, unsupportedOption)
-        }
-
-        try {
-            detachedVerify.notBefore(parseNotBefore(notBefore))
-        } catch (unsupportedOption: UnsupportedOption) {
-            val errorMsg = getMsg("sop.error.feature_support.option_not_supported", "--not-before")
-            throw UnsupportedOption(errorMsg, unsupportedOption)
-        }
-
-        for (certInput in certificates) {
-            try {
-                getInput(certInput).use { certIn -> detachedVerify.cert(certIn) }
-            } catch (ioException: IOException) {
-                throw RuntimeException(ioException)
-            } catch (badData: BadData) {
-                val errorMsg = getMsg("sop.error.input.not_a_certificate", certInput)
-                throw BadData(errorMsg, badData)
-            }
-        }
-
-        try {
-            getInput(signature).use { sigIn -> detachedVerify.signatures(sigIn) }
-        } catch (e: IOException) {
-            throw RuntimeException(e)
-        } catch (badData: BadData) {
-            val errorMsg = getMsg("sop.error.input.not_a_signature", signature)
-            throw BadData(errorMsg, badData)
-        }
-
-        val verifications =
-            try {
-                detachedVerify.data(System.`in`)
-            } catch (e: NoSignature) {
-                val errorMsg = getMsg("sop.error.runtime.no_verifiable_signature_found")
-                throw NoSignature(errorMsg, e)
-            } catch (ioException: IOException) {
-                throw RuntimeException(ioException)
-            } catch (badData: BadData) {
-                val errorMsg = getMsg("sop.error.input.stdin_not_a_message")
-                throw BadData(errorMsg, badData)
-            }
-
-        for (verification in verifications) {
-            println(verification.toString())
-        }
-    }
-}

sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/VersionCmd.kt

@@ -1,57 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands
-
-import picocli.CommandLine.ArgGroup
-import picocli.CommandLine.Command
-import picocli.CommandLine.Option
-import sop.cli.picocli.SopCLI
-import sop.exception.SOPGPException
-
-@Command(
-    name = "version",
-    resourceBundle = "msg_version",
-    exitCodeOnInvalidInput = SOPGPException.UnsupportedOption.EXIT_CODE)
-class VersionCmd : AbstractSopCmd() {
-
-    @ArgGroup var exclusive: Exclusive? = null
-
-    class Exclusive {
-        @Option(names = ["--extended"]) var extended: Boolean = false
-        @Option(names = ["--backend"]) var backend: Boolean = false
-        @Option(names = ["--sop-spec"]) var sopSpec: Boolean = false
-        @Option(names = ["--sopv"]) var sopv: Boolean = false
-    }
-
-    override fun run() {
-        val version = throwIfUnsupportedSubcommand(SopCLI.getSop().version(), "version")
-
-        if (exclusive == null) {
-            // No option provided
-            println("${version.getName()} ${version.getVersion()}")
-            return
-        }
-
-        if (exclusive!!.extended) {
-            println(version.getExtendedVersion())
-            return
-        }
-
-        if (exclusive!!.backend) {
-            println(version.getBackendVersion())
-            return
-        }
-
-        if (exclusive!!.sopSpec) {
-            println(version.getSopSpecVersion())
-            return
-        }
-
-        if (exclusive!!.sopv) {
-            println(version.getSopVVersion())
-            return
-        }
-    }
-}

sop-java-picocli/src/main/resources/msg_armor.properties

@@ -2,8 +2,8 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 usage.header=Add ASCII Armor to standard input
+label=Label to be used in the header and tail of the armoring
 
-stacktrace=Print stacktrace
 # Generic TODO: Remove when bumping picocli to 4.7.0
 usage.synopsisHeading=Usage:\u0020
 usage.commandListHeading = %nCommands:%n

sop-java-picocli/src/main/resources/msg_armor_de.properties

@@ -2,8 +2,8 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 usage.header=Schütze Standard-Eingabe mit ASCII Armor
+label=Label für Kopf- und Fußzeile der ASCII Armor
 
-stacktrace=Stacktrace ausgeben
 # Generic TODO: Remove when bumping picocli to 4.7.0
 usage.synopsisHeading=Aufruf:\u0020
 usage.commandListHeading=%nBefehle:%n

sop-java-picocli/src/main/resources/msg_change-key-password.properties

@@ -1,21 +0,0 @@
-# SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-#
-# SPDX-License-Identifier: Apache-2.0
-usage.header=Update the password of a key
-usage.description.0=Unlock all secret keys from STDIN using the given old passwords and emit them re-locked using the new password to STDOUT.
-usage.description.1=If any (sub-) key cannot be unlocked, this operation will exit with error code 67.
-no-armor=ASCII armor the output
-new-key-password.0=New password to lock the keys with.
-new-key-password.1=If no new password is passed in, the keys will be emitted unlocked.
-new-key-password.2=Is an INDIRECT data type (e.g. file, environment variable, file descriptor...).
-old-key-password.0=Old passwords to unlock the keys with.
-old-key-password.1=Multiple passwords can be passed in, which are tested sequentially to unlock locked subkeys.
-old-key-password.2=Is an INDIRECT data type (e.g. file, environment variable, file descriptor...).
-
-stacktrace=Print stacktrace
-# Generic TODO: Remove when bumping picocli to 4.7.0
-usage.descriptionHeading=%nDescription:%n
-usage.synopsisHeading=Usage:\u0020
-usage.commandListHeading = %nCommands:%n
-usage.optionListHeading = %nOptions:%n
-usage.footerHeading=Powered by picocli%n

sop-java-picocli/src/main/resources/msg_change-key-password_de.properties

@@ -1,21 +0,0 @@
-# SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-#
-# SPDX-License-Identifier: Apache-2.0
-usage.header=Ändere das Passwort eines Schlüssels
-usage.description.0=Entsperre alle Schlüssel von Standard-Eingabe mithilfe der alten Passwörter und gebe sie mit dem neuen Passwort gesperrt auf Standard-Ausgabe aus.
-usage.description.1=Falls einer oder mehrere (Unter-)Schlüssel nicht entsperrt werden können, gibt diese Operation den Fehlercode 67 aus.
-no-armor=Schütze Ausgabe mit ASCII Armor
-new-key-password.0=Neues Passwort zur Sperrung der Schlüssel.
-new-key-password.1=Falls kein neues Passwort angegeben wird, werden die Schlüssel entsperrt ausgegeben.
-new-key-password.2=Ist ein INDIREKTER Datentyp (z.B.. Datei, Umgebungsvariable, Dateideskriptor...).
-old-key-password.0=Alte Passwörter zum Entsperren der Schlüssel.
-old-key-password.1=Mehrere Passwortkandidaten können übergeben werden, welche der Reihe nach durchprobiert werden, um Unterschlüssel zu entsperren.
-old-key-password.2=Ist ein INDIREKTER Datentyp (z.B.. Datei, Umgebungsvariable, Dateideskriptor...).
-
-stacktrace=Stacktrace ausgeben
-# Generic TODO: Remove when bumping picocli to 4.7.0
-usage.descriptionHeading=%nBeschreibung:%n
-usage.synopsisHeading=Aufruf:\u0020
-usage.commandListHeading=%nBefehle:%n
-usage.optionListHeading = %nOptionen:%n
-usage.footerHeading=Powered by Picocli%n

sop-java-picocli/src/main/resources/msg_dearmor.properties

@@ -3,7 +3,6 @@
 # SPDX-License-Identifier: Apache-2.0
 usage.header=Remove ASCII Armor from standard input
 
-stacktrace=Print stacktrace
 # Generic TODO: Remove when bumping picocli to 4.7.0
 usage.synopsisHeading=Usage:\u0020
 usage.commandListHeading = %nCommands:%n

sop-java-picocli/src/main/resources/msg_dearmor_de.properties

@@ -3,7 +3,6 @@
 # SPDX-License-Identifier: Apache-2.0
 usage.header=Entferne ASCII Armor von Standard-Eingabe
 
-stacktrace=Stacktrace ausgeben
 # Generic TODO: Remove when bumping picocli to 4.7.0
 usage.synopsisHeading=Aufruf:\u0020
 usage.commandListHeading=%nBefehle:%n

sop-java-picocli/src/main/resources/msg_decrypt.properties

@@ -1,30 +1,28 @@
 # SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
 #
 # SPDX-License-Identifier: Apache-2.0
-usage.header=Decrypt a message
+usage.header=Decrypt a message from standard input
 session-key-out=Can be used to learn the session key on successful decryption
 with-session-key.0=Symmetric message key (session key).
 with-session-key.1=Enables decryption of the "CIPHERTEXT" using the session key directly against the "SEIPD" packet.
-with-session-key.2=Is an INDIRECT data type (e.g. file, environment variable, file descriptor...).
+with-session-key.2=Is an INDIRECT data type (e.g. file, environment variable, file descriptor...)
 with-password.0=Symmetric passphrase to decrypt the message with.
 with-password.1=Enables decryption based on any "SKESK" packets in the "CIPHERTEXT".
-with-password.2=Is an INDIRECT data type (e.g. file, environment variable, file descriptor...).
+with-password.2=Is an INDIRECT data type (e.g. file, environment variable, file descriptor...)
 verify-out=Emits signature verification status to the designated output
 verify-with=Certificates for signature verification
-verify-not-before.0=ISO-8601 formatted UTC date (e.g. '2020-11-23T16:35Z)
-verify-not-before.1=Reject signatures with a creation date not in range.
-verify-not-before.2=Defaults to beginning of time ('-').
-verify-not-after.0=ISO-8601 formatted UTC date (e.g. '2020-11-23T16:35Z)
-verify-not-after.1=Reject signatures with a creation date not in range.
-verify-not-after.2=Defaults to current system time ('now').
-verify-not-after.3=Accepts special value '-' for end of time.
+not-before.0=ISO-8601 formatted UTC date (e.g. '2020-11-23T16:35Z)
+not-before.1=Reject signatures with a creation date not in range.
+not-before.2=Defaults to beginning of time ('-').
+not-after.0=ISO-8601 formatted UTC date (e.g. '2020-11-23T16:35Z)
+not-after.1=Reject signatures with a creation date not in range.
+not-after.2=Defaults to current system time ('now').
+not-after.3=Accepts special value '-' for end of time.
 with-key-password.0=Passphrase to unlock the secret key(s).
 with-key-password.1=Is an INDIRECT data type (e.g. file, environment variable, file descriptor...).
 KEY[0..*]=Secret keys to attempt decryption with
 
-stacktrace=Print stacktrace
 # Generic TODO: Remove when bumping picocli to 4.7.0
-usage.parameterListHeading=%nParameters:%n
 usage.synopsisHeading=Usage:\u0020
 usage.commandListHeading = %nCommands:%n
 usage.optionListHeading = %nOptions:%n

sop-java-picocli/src/main/resources/msg_decrypt_de.properties

@@ -1,30 +1,28 @@
 # SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
 #
 # SPDX-License-Identifier: Apache-2.0
-usage.header=Entschlüssle eine Nachricht
+usage.header=Entschlüssle eine Nachricht von Standard-Eingabe
 session-key-out=Extrahiere den Nachrichtenschlüssel nach erfolgreicher Entschlüsselung
 with-session-key.0=Symmetrischer Nachrichtenschlüssel (Sitzungsschlüssel).
-with-session-key.1=Ermöglicht direkte Entschlüsselung des im "CIPHERTEXT" enthaltenen "SEIPD" Paketes mithilfe des Nachrichtenschlüssels.
-with-session-key.2=Ist INDIREKTER Datentyp (z.B.. Datei, Umgebungsvariable, Dateideskriptor...).
+with-session-key.1=Ermöglicht direkte Entschlüsselung des im "CIPHERTEXT" enhaltenen "SEIPD" Paketes mithilfe des Nachrichtenschlüssels.
+with_session-key.2=Ist INDIREKTER Datentyp (z.B.. Datei, Umgebungsvariable, Dateideskriptor...).
 with-password.0=Symmetrisches Passwort zur Entschlüsselung der Nachricht.
 with-password.1=Ermöglicht Entschlüsselung basierend auf im "CIPHERTEXT" enthaltenen "SKESK" Paketen.
 with-password.2=Ist INDIREKTER Datentyp (z.B.. Datei, Umgebungsvariable, Dateideskriptor...).
 verify-out=Schreibe Status der Signaturprüfung in angegebene Ausgabe
 verify-with=Zertifikate zur Signaturprüfung
-verify-not-before.0=Nach ISO-8601 formatierter UTC Zeitstempel (z.B.. '2020-11-23T16:35Z)
-verify-not-before.1=Lehne Signaturen mit Erstellungsdatum außerhalb des Gültigkeitsbereichs ab.
-verify-not-before.2=Standardmäßig: Anbeginn der Zeit ('-').
-verify-not-after.0=Nach ISO-8601 formatierter UTC Zeitstempel (z.B.. '2020-11-23T16:35Z)
-verify-not-after.1=Lehne Signaturen mit Erstellungsdatum außerhalb des Gültigkeitsbereichs ab.
-verify-not-after.2=Standardmäßig: Aktueller Zeitpunkt ('now').
-verify-not-after.3=Akzeptiert speziellen Wert '-' für das Ende aller Zeiten.
+not-before.0=Nach ISO-8601 formatierter UTC Zeitstempel (z.B.. '2020-11-23T16:35Z)
+not-before.1=Lehne Signaturen mit Erstellungsdatum außerhalb des Gültigkeitsbereichs ab.
+not-before.2=Standardmäßig: Anbeginn der Zeit ('-').
+not-after.0=Nach ISO-8601 formatierter UTC Zeitstempel (z.B.. '2020-11-23T16:35Z)
+not-after.1=Lehne Signaturen mit Erstellungsdatum außerhalb des Gültigkeitsbereichs ab.
+not-after.2=Standardmäßig: Aktueller Zeitunkt ('now').
+not-after.3=Akzeptiert speziellen Wert '-' für das Ende aller Zeiten.
 with-key-password.0=Passwort zum Entsperren der privaten Schlüssel
 with-key-password.1=Ist INDIREKTER Datentyp (z.B.. Datei, Umgebungsvariable, Dateideskriptor...).
 KEY[0..*]=Private Schlüssel zum Entschlüsseln der Nachricht
 
-stacktrace=Stacktrace ausgeben
 # Generic TODO: Remove when bumping picocli to 4.7.0
-usage.parameterListHeading=%nParameter:%n
 usage.synopsisHeading=Aufruf:\u0020
 usage.commandListHeading=%nBefehle:%n
 usage.optionListHeading = %nOptionen:%n

sop-java-picocli/src/main/resources/msg_detached-sign.properties

@@ -1,19 +1,17 @@
 # SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
 #
 # SPDX-License-Identifier: Apache-2.0
-usage.header=Create a detached message signature
+usage.header=Create a detached signature on the data from standard input
 no-armor=ASCII armor the output
-as.0=Specify the output format of the signed message.
+as.0=Specify the output format of the signed message
 as.1=Defaults to 'binary'.
 as.2=If '--as=text' and the input data is not valid UTF-8, sign fails with return code 53.
 with-key-password.0=Passphrase to unlock the secret key(s).
 with-key-password.1=Is an INDIRECT data type (e.g. file, environment variable, file descriptor...).
-micalg-out=Emits the digest algorithm used to the specified file in a way that can be used to populate the micalg parameter for the PGP/MIME Content-Type (RFC3156).
+micalg-out=Emits the digest algorithm used to the specified file in a way that can be used to populate the micalg parameter for the PGP/MIME Content-Type (RFC3156)
 KEYS[0..*]=Secret keys used for signing
 
-stacktrace=Print stacktrace
 # Generic TODO: Remove when bumping picocli to 4.7.0
-usage.parameterListHeading=%nParameters:%n
 usage.synopsisHeading=Usage:\u0020
 usage.commandListHeading = %nCommands:%n
 usage.optionListHeading = %nOptions:%n

sop-java-picocli/src/main/resources/msg_detached-sign_de.properties

@@ -1,7 +1,7 @@
 # SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
 #
 # SPDX-License-Identifier: Apache-2.0
-usage.header=Erstelle abgetrennte Nachrichten-Signatur
+usage.header=Erstelle abgetrennte Signatur über Nachricht von Standard-Eingabe
 no-armor=Schütze Ausgabe mit ASCII Armor
 as.0=Bestimme Signaturformat der Nachricht.
 as.1=Standardmäßig: 'binary'.
@@ -11,9 +11,7 @@ with-key-password.1=Ist ein INDIREKTER Datentyp (z.B.. Datei, Umgebungsvariable,
 micalg-out=Gibt den verwendeten Digest-Algorithmus an die angegebene Ausgabe in einer Form aus, die zum Auffüllen des micalg-Parameters für den PGP/MIME Content-Type (RFC3156) verwendet werden kann.
 KEYS[0..*]=Private Signaturschlüssel
 
-stacktrace=Stacktrace ausgeben
 # Generic TODO: Remove when bumping picocli to 4.7.0
-usage.parameterListHeading=%nParameter:%n
 usage.synopsisHeading=Aufruf:\u0020
 usage.commandListHeading=%nBefehle:%n
 usage.optionListHeading = %nOptionen:%n

sop-java-picocli/src/main/resources/msg_detached-verify.properties

@@ -1,22 +1,18 @@
 # SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
 #
 # SPDX-License-Identifier: Apache-2.0
-usage.header=Verify a detached signature
-usage.description=Verify a detached signature over some data from STDIN.
+usage.header=Verify a detached signature over the data from standard input
 not-before.0=ISO-8601 formatted UTC date (e.g. '2020-11-23T16:35Z)
 not-before.1=Reject signatures with a creation date not in range.
 not-before.2=Defaults to beginning of time ("-").
-not-after.0=ISO-8601 formatted UTC date (e.g. '2020-11-23T16:35Z)
-not-after.1=Reject signatures with a creation date not in range.
-not-after.2=Defaults to current system time ("now").
-not-after.3=Accepts special value "-" for end of time.
+not-after.1=ISO-8601 formatted UTC date (e.g. '2020-11-23T16:35Z)
+not-after.2=Reject signatures with a creation date not in range.
+not-after.3=Defaults to current system time ("now").\
+not-after.4 = Accepts special value "-" for end of time.
 SIGNATURE[0]=Detached signature
-CERT[1..*]=Public key certificates for signature verification
+CERT[0..*]=Public key certificates for signature verification
 
-stacktrace=Print stacktrace
 # Generic TODO: Remove when bumping picocli to 4.7.0
-usage.descriptionHeading=%nDescription:%n
-usage.parameterListHeading=%nParameters:%n
 usage.synopsisHeading=Usage:\u0020
 usage.commandListHeading = %nCommands:%n
 usage.optionListHeading = %nOptions:%n

sop-java-picocli/src/main/resources/msg_detached-verify_de.properties

@@ -1,22 +1,18 @@
 # SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
 #
 # SPDX-License-Identifier: Apache-2.0
-usage.header=Prüfe eine abgetrennte Nachrichten-Signatur
-usage.description=Prüfe eine abgetrennte Signatur über eine Nachricht von Standard-Eingabe.
+usage.header=Prüfe eine abgetrennte Signatur über eine Nachricht von Standard-Eingabe
 not-before.0=Nach ISO-8601 formatierter UTC Zeitstempel (z.B.. '2020-11-23T16:35Z)
 not-before.1=Lehne Signaturen mit Erstellungsdatum außerhalb des Gültigkeitsbereichs ab.
 not-before.2=Standardmäßig: Anbeginn der Zeit ('-').
 not-after.0=Nach ISO-8601 formatierter UTC Zeitstempel (z.B.. '2020-11-23T16:35Z)
 not-after.1=Lehne Signaturen mit Erstellungsdatum außerhalb des Gültigkeitsbereichs ab.
-not-after.2=Standardmäßig: Aktueller Zeitpunkt ('now').
+not-after.2=Standardmäßig: Aktueller Zeitunkt ('now').
 not-after.3=Akzeptiert speziellen Wert '-' für das Ende aller Zeiten.
 SIGNATURE[0]=Abgetrennte Signatur
-CERT[1..*]=Zertifikate (öffentliche Schlüssel) zur Signaturprüfung
+CERT[0..*]=Zertifikate (öffentliche Schlüssel) zur Signaturprüfung
 
-stacktrace=Stacktrace ausgeben
 # Generic TODO: Remove when bumping picocli to 4.7.0
-usage.descriptionHeading=%nBeschreibung:%n
-usage.parameterListHeading=%nParameter:%n
 usage.synopsisHeading=Aufruf:\u0020
 usage.commandListHeading=%nBefehle:%n
 usage.optionListHeading = %nOptionen:%n

sop-java-picocli/src/main/resources/msg_encrypt.properties

@@ -5,16 +5,13 @@ usage.header=Encrypt a message from standard input
 no-armor=ASCII armor the output
 as=Type of the input data. Defaults to 'binary'
 with-password.0=Encrypt the message with a password.
-with-password.1=Is an INDIRECT data type (e.g. file, environment variable, file descriptor...).
+with-password.1=Is an INDIRECT data type (e.g. file, environment variable, file descriptor...)
 sign-with=Sign the output with a private key
-profile=Profile identifier to switch between profiles
 with-key-password.0=Passphrase to unlock the secret key(s).
 with-key-password.1=Is an INDIRECT data type (e.g. file, environment variable, file descriptor...).
 CERTS[0..*]=Certificates the message gets encrypted to
 
-stacktrace=Print stacktrace
 # Generic TODO: Remove when bumping picocli to 4.7.0
-usage.parameterListHeading=%nParameters:%n
 usage.synopsisHeading=Usage:\u0020
 usage.commandListHeading = %nCommands:%n
 usage.optionListHeading = %nOptions:%n

sop-java-picocli/src/main/resources/msg_encrypt_de.properties

@@ -7,14 +7,11 @@ as=Format der Nachricht. Standardm
 with-password.0=Verschlüssle die Nachricht mit einem Passwort
 with-password.1=Ist ein INDIREKTER Datentyp (z.B.. Datei, Umgebungsvariable, Dateideskriptor...).
 sign-with=Signiere die Nachricht mit einem privaten Schlüssel
-profile=Profil-Identifikator um zwischen Profilen zu wechseln
 with-key-password.0=Passwort zum Entsperren der privaten Schlüssel
 with-key-password.1=Ist INDIREKTER Datentyp (z.B.. Datei, Umgebungsvariable, Dateideskriptor...).
 CERTS[0..*]=Zertifikate für die die Nachricht verschlüsselt werden soll
 
-stacktrace=Stacktrace ausgeben
 # Generic TODO: Remove when bumping picocli to 4.7.0
-usage.parameterListHeading=%nParameter:%n
 usage.synopsisHeading=Aufruf:\u0020
 usage.commandListHeading=%nBefehle:%n
 usage.optionListHeading = %nOptionen:%n

sop-java-picocli/src/main/resources/msg_extract-cert.properties

@@ -1,13 +1,10 @@
 # SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
 #
 # SPDX-License-Identifier: Apache-2.0
-usage.header=Extract a public key certificate from a secret key
-usage.description=Read a secret key from STDIN and emit the public key certificate to STDOUT.
+usage.header=Extract a public key certificate from a secret key from standard input
 no-armor=ASCII armor the output
 
-stacktrace=Print stacktrace
 # Generic TODO: Remove when bumping picocli to 4.7.0
-usage.descriptionHeading=%nDescription:%n
 usage.synopsisHeading=Usage:\u0020
 usage.commandListHeading = %nCommands:%n
 usage.optionListHeading = %nOptions:%n