mirror of
https://github.com/pgpainless/pgpainless.git
synced 2024-06-25 04:54:49 +02:00
Replace index with main README.md
This commit is contained in:
parent
3c802183f0
commit
238e672043
GPG key ID:
62BEE9264BF17311
264
index.md
264
index.md
|
|
@ -1,118 +1,216 @@
|
|||
PGPainless is a wrapper around [Bouncycastle](https://www.bouncycastle.org/), which provides an easy to use, intuitive,
|
||||
but also powerful API for OpenPGP ([RFC4880](https://datatracker.ietf.org/doc/html/rfc4880)).
|
||||
<!--
|
||||
SPDX-FileCopyrightText: 2021 Paul Schaub <info@pgpainless.org>
|
||||
|
||||
Its primary functionality is encrypting, signing, decrypting and verifying data, as well as generating and modifying keys.
|
||||
SPDX-License-Identifier: Apache-2.0
|
||||
-->
|
||||
|
||||
## Why should I use it?
|
||||
# PGPainless - Use OpenPGP Painlessly!
|
||||
|
||||
[](https://travis-ci.com/pgpainless/pgpainless)
|
||||
[](https://search.maven.org/artifact/org.pgpainless/pgpainless-core)
|
||||
[](https://coveralls.io/github/pgpainless/pgpainless?branch=master)
|
||||
[](https://tests.sequoia-pgp.org/)
|
||||
[](https://keyoxide.org/7F9116FEA90A5983936C7CFAA027DB2F3E1E118A)
|
||||
[](https://api.reuse.software/info/github.com/pgpainless/pgpainless)
|
||||
|
||||
## About
|
||||
|
||||
PGPainless aims to make using OpenPGP in Java projects as simple as possible.
|
||||
It does so by introducing an intuitive Builder structure, which allows easy
|
||||
setup of encryption/decryption operations, as well as straight forward key generation.
|
||||
|
||||
PGPainless is based around the Bouncycastle java library and can be used on Android down to API level 10.
|
||||
It can be configured to either use the Java Cryptographic Engine (JCE), or Bouncycastles lightweight reimplementation.
|
||||
|
||||
While signature verification in Bouncycastle is limited to signature correctness, PGPainless goes much further.
|
||||
It also checks if signing subkeys are properly bound to their primary key, if keys are expired or revoked, as well as
|
||||
if keys are allowed to create signatures in the first place.
|
||||
|
||||
These rigorous checks make PGPainless stand out from other Java-based OpenPGP libraries and are the reason why
|
||||
PGPainless currently [*scores second place* on Sequoia-PGPs Interoperability Test-Suite](https://tests.sequoia-pgp.org).
|
||||
|
||||
> At FlowCrypt we are using PGPainless in our Kotlin code bases on Android and on server side.
|
||||
> The ergonomy of legacy PGP tooling on Java is not very good, and PGPainless improves it greatly.
|
||||
> The ergonomics of legacy PGP tooling on Java is not very good, and PGPainless improves it greatly.
|
||||
> We were so happy with our initial tests and with Paul - the maintainer, that we decided to sponsor further development of this library.
|
||||
>
|
||||
> -Tom @ FlowCrypt.com
|
||||
|
||||
There are a bunch of reasons why you should consider switching to PGPainless:
|
||||
> Finally, testing irrefutably confirmed that the library removes many associated difficulties with PGP use in its provision of an approachable and uncomplicated API.
|
||||
> In this regard, Paul Schaub deserves the utmost praise.
|
||||
>
|
||||
> -Mario @ Cure53.de
|
||||
|
||||
### Easy to use API
|
||||
## Get Started
|
||||
|
||||
One main focus of the project is ease of use.
|
||||
Using Bouncycastle can be a hassle, since simple tasks require a substantial amount of boilerplate code and small
|
||||
mistakes are easily made.
|
||||
PGPainless aims at providing a simple interface to get the job done quickly, while not trading away functionality or
|
||||
correctness.
|
||||
The very easiest way to start using OpenPGP on Java/Kotlin based systems is to use an implementation of [sop-java](https://github.com/pgpainless/sop-java).
|
||||
`sop-java` defines a very stripped down API and is super easy to get started with.
|
||||
Luckily PGPainless provides an implementation for the `sop-java` interface definitions in the form of [pgpainless-sop](pgpainless-sop/README.md).
|
||||
|
||||
For examples about how to use the API, see the projects
|
||||
[readme](https://github.com/pgpainless/pgpainless/blob/master/README.md).
|
||||
If you need more flexibility, directly using `pgpainless-core` is the way to go.
|
||||
|
||||
### Complementing Bouncycastle
|
||||
## Features
|
||||
|
||||
**PGPainless has Bouncycastle truly figured out!**
|
||||
Most of PGPainless' features can be accessed directly from the `PGPainless` class.
|
||||
If you want to get started, this class is your friend :)
|
||||
|
||||
If you already use BC in your code, PGPainless is a perfect complement!
|
||||
It allows you to remove many lines of boilerplate code and offers you the certitude of a dedicated JUnit test suite.
|
||||
For further details you should check out the [javadoc](https://javadoc.io/doc/org.pgpainless/pgpainless-core)!
|
||||
|
||||
Furthermore PGPainless is scoring *second place* on the very extensive [Sequoia OpenPGP Interoperability Test Suite](https://tests.sequoia-pgp.org).
|
||||
### Handle Keys
|
||||
Reading keys from ASCII armored strings or from binary files is easy:
|
||||
|
||||
We have studied BC intensively, identified its shortcomings and came up with solutions to those:
|
||||
|
||||
Contrary to vanilla BC and some other BC-based OpenPGP libraries, PGPainless does signature verification **the right way**.
|
||||
It not only checks for signature *correctness*, but goes the extra mile to also check signature *validity* by taking into consideration key expiration dates, revocations, signature structures, etc.
|
||||
|
||||
Take a look at [this blog post](https://blog.jabberhead.tk/2021/04/03/why-signature-verification-in-openpgp-is-hard/) to get an idea of how complex signature verification with OpenPGP truly is.
|
||||
|
||||
### Android Support
|
||||
PGPainless is designed to work on Android versions down to [API level 10](https://developer.android.com/about/versions/android-2.3.3) (Gingerbread).
|
||||
This makes PGPainless a good choice for implementing OpenPGP encryption in your Android app.
|
||||
|
||||
Compatibility with certain Android APIs is ensured through [Animalsniffer](http://www.mojohaus.org/animal-sniffer/).
|
||||
|
||||
## Releases
|
||||
PGPainless is released on the maven central repository. Including it in your project is simple:
|
||||
|
||||
Maven:
|
||||
```xml
|
||||
<dependency>
|
||||
<groupId>org.pgpainless</groupId>
|
||||
<artifactId>pgpainless-core</artifactId>
|
||||
<version>0.2.13</version>
|
||||
</dependency>
|
||||
```java
|
||||
String key = "-----BEGIN PGP PRIVATE KEY BLOCK-----\n"...
|
||||
PGPSecretKeyRing secretKey = PGPainless.readKeyRing()
|
||||
.secretKeyRing(key);
|
||||
```
|
||||
|
||||
Gradle:
|
||||
Similarly, keys can quickly be exported::
|
||||
|
||||
```java
|
||||
PGPSecretKeyRing secretKey = ...;
|
||||
String armored = PGPainless.asciiArmor(secretKey);
|
||||
ByteArrayOutputStream binary = new ByteArrayOutputStream();
|
||||
secretKey.encode(binary);
|
||||
```
|
||||
|
||||
Extract a public key certificate from a secret key:
|
||||
|
||||
```java
|
||||
PGPSecretKeyRing secretKey = ...;
|
||||
PGPPublicKeyRing certificate = PGPainless.extractCertificate(secretKey);
|
||||
```
|
||||
|
||||
### Easily Generate Keys
|
||||
PGPainless comes with a simple to use `KeyRingBuilder` class that helps you to quickly generate modern OpenPGP keys.
|
||||
There are some predefined key archetypes, but it is possible to fully customize key generation to your needs.
|
||||
|
||||
```java
|
||||
// RSA key without additional subkeys
|
||||
PGPSecretKeyRing secretKeys = PGPainless.generateKeyRing()
|
||||
.simpleRsaKeyRing("Juliet <juliet@montague.lit>", RsaLength._4096);
|
||||
|
||||
// EdDSA primary key with EdDSA signing- and XDH encryption subkeys
|
||||
PGPSecretKeyRing secretKeys = PGPainless.generateKeyRing()
|
||||
.modernKeyRing("Romeo <romeo@montague.lit>", "I defy you, stars!");
|
||||
|
||||
// Customized key
|
||||
PGPSecretKeyRing keyRing = PGPainless.buildKeyRing()
|
||||
.setPrimaryKey(KeySpec.getBuilder(
|
||||
RSA.withLength(RsaLength._8192),
|
||||
KeyFlag.SIGN_DATA, KeyFlag.CERTIFY_OTHER))
|
||||
.addSubkey(
|
||||
KeySpec.getBuilder(ECDSA.fromCurve(EllipticCurve._P256), KeyFlag.SIGN_DATA)
|
||||
.overrideCompressionAlgorithms(CompressionAlgorithm.ZLIB)
|
||||
).addSubkey(
|
||||
KeySpec.getBuilder(
|
||||
ECDH.fromCurve(EllipticCurve._P256),
|
||||
KeyFlag.ENCRYPT_COMMS, KeyFlag.ENCRYPT_STORAGE)
|
||||
).addUserId("Juliet <juliet@montague.lit>")
|
||||
.addUserId("xmpp:juliet@capulet.lit")
|
||||
.setPassphrase("romeo_oh_Romeo<3")
|
||||
.build();
|
||||
```
|
||||
|
||||
### Encrypt and Sign Data
|
||||
PGPainless makes it easy and painless to encrypt and/or sign data.
|
||||
Passed in keys are automatically evaluated, so that you don't accidentally encrypt to revoked or expired keys.
|
||||
PGPainless will furthermore detect which algorithms are supported by recipient keys and will negotiate
|
||||
algorithms accordingly.
|
||||
Still it allows you to manually specify which algorithms to use of course.
|
||||
|
||||
```java
|
||||
EncryptionStream encryptionStream = PGPainless.encryptAndOrSign()
|
||||
.onOutputStream(outputStream)
|
||||
.withOptions(
|
||||
ProducerOptions.signAndEncrypt(
|
||||
new EncryptionOptions()
|
||||
.addRecipient(aliceKey)
|
||||
.addRecipient(bobsKey)
|
||||
// optionally encrypt to a passphrase
|
||||
.addPassphrase(Passphrase.fromPassword("password123"))
|
||||
// optionally override symmetric encryption algorithm
|
||||
.overrideEncryptionAlgorithm(SymmetricKeyAlgorithm.AES_192),
|
||||
new SigningOptions()
|
||||
// Sign in-line (using one-pass-signature packet)
|
||||
.addInlineSignature(secretKeyDecryptor, aliceSecKey, signatureType)
|
||||
// Sign using a detached signature
|
||||
.addDetachedSignature(secretKeyDecryptor, aliceSecKey, signatureType)
|
||||
// optionally override hash algorithm
|
||||
.overrideHashAlgorithm(HashAlgorithm.SHA256)
|
||||
).setAsciiArmor(true) // Ascii armor or not
|
||||
);
|
||||
|
||||
Streams.pipeAll(plaintextInputStream, encryptionStream);
|
||||
encryptionStream.close();
|
||||
|
||||
// Information about the encryption (algorithms, detached signatures etc.)
|
||||
EncryptionResult result = encryptionStream.getResult();
|
||||
```
|
||||
|
||||
### Decrypt and Verify Signatures
|
||||
|
||||
Decrypting data and verifying signatures is being done similarly.
|
||||
PGPainless will not only verify *correctness* of signatures, but also if the signing key was allowed to create the signature.
|
||||
A key might not be allowed to create signatures if, for example, it expired or was revoked, or was not properly bound to the key ring.
|
||||
Furthermore, PGPainless will reject signatures made using weak algorithms like SHA-1.
|
||||
This behaviour can be modified though using the `Policy` class.
|
||||
|
||||
```java
|
||||
DecryptionStream decryptionStream = PGPainless.decryptAndOrVerify()
|
||||
.onInputStream(encryptedInputStream)
|
||||
.withOptions(new ConsumerOptions()
|
||||
.addDecryptionKey(bobSecKeys, secretKeyProtector)
|
||||
.addVerificationCert(alicePubKeys)
|
||||
);
|
||||
|
||||
Streams.pipeAll(decryptionStream, outputStream);
|
||||
decryptionStream.close();
|
||||
|
||||
// Result contains information like signature status etc.
|
||||
OpenPgpMetadata metadata = decryptionStream.getResult();
|
||||
```
|
||||
|
||||
*After* the `DecryptionStream` was closed, you can get metadata about the processed data by retrieving the `OpenPgpMetadata`.
|
||||
Again, this object will contain information about how the message was encrypted, who signed it and so on.
|
||||
|
||||
#### Many more examples can be found in the [examples package](pgpainless-core/src/test/java/org/pgpainless/example)!!!
|
||||
|
||||
## Include PGPainless in your Project
|
||||
|
||||
PGPainless is available on maven central. In order to include it in your project, just add the
|
||||
maven central repository and add PGPainless as a dependency.
|
||||
|
||||
```gradle
|
||||
repositories {
|
||||
mavenCentral()
|
||||
}
|
||||
|
||||
dependencies {
|
||||
compile 'org.pgpainless:pgpainless-core:0.2.13'
|
||||
implementation 'org.pgpainless:pgpainless-core:1.0.3'
|
||||
}
|
||||
```
|
||||
|
||||
There are [snapshot releases](https://oss.sonatype.org/content/repositories/snapshots/org/pgpainless/pgpainless-core/) available as well.
|
||||
|
||||
## Command Line Interface
|
||||
|
||||
PGPainless provides an implementation of the [Stateless OpenPGP Command Line Interface](https://datatracker.ietf.org/doc/html/draft-dkg-openpgp-stateless-cli-01)
|
||||
in the `pgpainless-sop` module.
|
||||
This allows PGPainless to be used as a command line application for encryption/decryption and signature creation/validation.
|
||||
|
||||
More importantly though, this allows to plug PGPainless into the [Sequoia OpenPGP Interoperability Test Suite](https://tests.sequoia-pgp.org/).
|
||||
This extensive test suite demonstrates how closely PGPainless is following the standard, especially when it comes to signature verification.
|
||||
|
||||
## Security Audits
|
||||
|
||||
In late 2021, PGPainless was subject to an extensive security audit by the the pentesting
|
||||
team of [Cure53](https://cure53.de). The audit was generously sponsored and arranged by [FlowCrypt.com](https://flowcrypt.com)!
|
||||
|
||||
Results of the audit [are publicly available here](assets/Audit-PGPainless.pdf).
|
||||
Wherever possible, findings of the audit have been fixed in a timely manner.
|
||||
|
||||
## Forever Free Software
|
||||
|
||||
PGPainless is licensed under the Apache License 2.0 and this will never change.
|
||||
|
||||
**Free Libre Open Source Software Rocks!**
|
||||
|
||||
## About
|
||||
PGPainless was created [during a Google Summer of Code project](https://blog.jabberhead.tk/summer-of-code-2018/),
|
||||
for which an easy to use OpenPGP API for Java and Android was needed.
|
||||
PGPainless is a by-product of my [Summer of Code 2018 project](https://blog.jabberhead.tk/summer-of-code-2018/)
|
||||
implementing OpenPGP support for the XMPP client library [Smack](https://github.com/igniterealtime/Smack).
|
||||
For that project I was in need of a simple-to-use OpenPGP library.
|
||||
|
||||
Originally we looked into forking [bouncy-gpg](https://github.com/neuhalje/bouncy-gpg),
|
||||
but since support for lower Android versions was a requirement, PGPainless was born as an independent project.
|
||||
In its early development stages the library was however influenced by bouncy-gpg written by Jens Neuhalje.
|
||||
Originally I was going to use [Bouncy-GPG](https://github.com/neuhalje/bouncy-gpg) for my project,
|
||||
but ultimately I decided to create my own OpenPGP library which better fits my needs.
|
||||
|
||||
However, PGPainless was heavily influenced by Bouncy-GPG.
|
||||
|
||||
To reach out to the development team, feel free to send a mail: info@pgpainless.org
|
||||
|
||||
## Development
|
||||
PGPainless is currently developed by [Paul Schaub (@vanitasvitae)](https://blog.jabberhead.tk).
|
||||
PGPainless is developed in - and accepts contributions from - the following places:
|
||||
|
||||
### Contribute
|
||||
Contributions are always welcome :) The project is developed in the following places:
|
||||
* [Github](https://github.com/pgpainless/pgpainless)
|
||||
* [Codeberg](https://codeberg.org/pgpainless/pgpainless)
|
||||
* [Codeberg](https://codeberg.org/PGPainless/pgpainless)
|
||||
|
||||
Pull requests are accepted on either of them.
|
||||
Please follow the [code of conduct](CODE_OF_CONDUCT.md) if you want to be part of the project.
|
||||
|
||||
### Bug Reports
|
||||
If you encounter a bug, please make sure to check, whether the bug has already been reported
|
||||
either [here](https://github.com/pgpainless/pgpainless/issues),
|
||||
or [here](https://codeberg.org/PGPainless/pgpainless/issues), in order to avoid duplicate bug reports.
|
||||
## Acknowledgements
|
||||
Development on PGPainless is generously sponsored by [FlowCrypt.com](https://flowcrypt.com). Thank you very very very much!
|
||||
|
||||
Continuous Integration is kindly provided by [Travis-CI.com](https://travis-ci.com/).
|
||||
|
|
|
|||
Loading…
Reference in a new issue