mirror of
https://github.com/pgpainless/pgpainless.git
synced 2024-11-23 12:52:07 +01:00
153 lines
6.1 KiB
Markdown
153 lines
6.1 KiB
Markdown
PGPainless - Use OpenPGP Painlessly!
|
|
====================================
|
|
|
|
[](https://travis-ci.com/pgpainless/pgpainless)
|
|
[](https://github.com/pgpainless/pgpainless/tags)
|
|
[](https://coveralls.io/github/pgpainless/pgpainless?branch=master)
|
|
[](https://pgpainless.org/releases/latest/javadoc/)
|
|
|
|
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 / decrytion 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 9.
|
|
|
|
### NOTE: PGPainless is in an early state of development. There may be dragons!
|
|
|
|
## 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 {
|
|
implementation 'org.pgpainless:pgpainless-core:0.1.0'
|
|
}
|
|
```
|
|
|
|
## How to use PGPainless
|
|
|
|
The entry point to the API is the `PGPainless` class. Here you can find methods for a quick start :)
|
|
|
|
### Generate Keys
|
|
|
|
The first thing you probably want to do is generate you some nice tasty Key Pairs. The most straight forward way to do so is by calling
|
|
|
|
```java
|
|
PGPSecretKeyRing keyRing = PGPainless.generateKeyRing()
|
|
.simpleRsaKeyRing("Juliet <juliet@montague.lit>", RsaLength._4096);
|
|
```
|
|
|
|
but feel free to explore the API further. PGPainless allows you to create Key Pairs consisting of a master key plus several sub keys, even with different algorithms at the same time!
|
|
Take for example a look at this delicious key:
|
|
|
|
```java
|
|
PGPSecretKeyRing keyRing = PGPainless.generateKeyRing()
|
|
.withSubKey(
|
|
KeySpec.getBuilder(ECDSA.fromCurve(EllipticCurve._P256))
|
|
.withKeyFlags(KeyFlag.SIGN_DATA)
|
|
.withDetailedConfiguration()
|
|
.withDefaultSymmetricAlgorithms()
|
|
.withDefaultHashAlgorithms()
|
|
.withPreferredCompressionAlgorithms(CompressionAlgorithm.ZLIB)
|
|
.withFeature(Feature.MODIFICATION_DETECTION)
|
|
.done())
|
|
.withSubKey(
|
|
KeySpec.getBuilder(ECDH.fromCurve(EllipticCurve._P256))
|
|
.withKeyFlags(KeyFlag.ENCRYPT_COMMS, KeyFlag.ENCRYPT_STORAGE)
|
|
.withDefaultAlgorithms())
|
|
.withMasterKey(
|
|
KeySpec.getBuilder(RSA.withLength(RsaLength._8192))
|
|
.withKeyFlags(KeyFlag.SIGN_DATA, KeyFlag.CERTIFY_OTHER)
|
|
.withDefaultAlgorithms())
|
|
.withPrimaryUserId("Juliet <juliet@montague.lit>")
|
|
.withPassphrase("romeo_oh_Romeo<3")
|
|
.build();
|
|
```
|
|
|
|
### Encrypt / Sign Data
|
|
|
|
Encrypting and signing data is pretty straight forward as well.
|
|
```java
|
|
EncryptionStream encryptor = PGPainless.encryptAndOrSign()
|
|
.onOutputStream(targetOuputStream)
|
|
.toRecipients(publicKeyRings)
|
|
.usingSecureAlgorithms()
|
|
.signWith(secretKeyDecryptor, signingKeyRing)
|
|
.noArmor();
|
|
```
|
|
|
|
Note: Despite the name, the `EncryptionStream` can be used to sign only as well. Simply replace the `.toRecipients()` option with `doNotEncrypt()`.
|
|
|
|
The resulting `EncryptionStream` can then be used to encrypt data like follows:
|
|
|
|
```java
|
|
Streams.pipeAll(sourceInputStream, encryptor);
|
|
sourceInputStream.close();
|
|
encryptor.close();
|
|
```
|
|
|
|
The encrypted data will be written to the provided `targetOutputStream`.
|
|
|
|
Additionally you can get information about the encrypted data by calling
|
|
|
|
```java
|
|
OpenPgpMetadata result = encryptor.getResult();
|
|
```
|
|
|
|
This object will contain information like to which keys the message is encrypted, which keys were used for signing and so on.
|
|
|
|
### Decrypt / Verify Encrypted Data
|
|
|
|
To process incoming encrypted / signed data, just do the following:
|
|
|
|
```java
|
|
DecryptionStream decryptor = PGPainless.decryptAndOrVerify()
|
|
.onInputStream(sourceInputStream) // insert encrypted data here
|
|
.decryptWith(secretKeyDecryptor, secretKey)
|
|
.verifyWith(trustedKeyIds, senderKeys)
|
|
.ignoreMissingPublicKeys()
|
|
.build();
|
|
```
|
|
|
|
Again, the resulting `DecryptionStream` can be used like a normal stream.
|
|
|
|
```java
|
|
Streams.pipeAll(decryptor, targetOutputStream);
|
|
decryptor.close();
|
|
```
|
|
|
|
*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.
|
|
|
|
```java
|
|
OpenPgpMetadata result = decryptor.getResult();
|
|
```
|
|
|
|
For further details you should check out the [javadoc](https://pgpainless.org/releases/latest/javadoc/)!
|
|
|
|
## About
|
|
PGPainless is a by-product of my [Summer of Code 2018 project](https://blog.jabberhead.tk/summer-of-code-2018/).
|
|
For that project I was in need of a simple to use OpenPGP library.
|
|
|
|
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 is heavily influenced by Bouncy-GPG.
|
|
|
|
To reach out to the development team, feel free to send a mail: info@pgpainless.org
|
|
|
|
## Development
|
|
PGPainless is developed in - and accepts contributions from - the following places:
|
|
|
|
* [Github](https://github.com/pgpainless/pgpainless)
|
|
* [Codeberg](https://codeberg.org/PGPainless/pgpainless)
|
|
|
|
Please follow the [code of conduct](CODE_OF_CONDUCT.md) if you want to be part of the project.
|