YvanMazy/PGPSplitter

Very small tool to split pgp keys from a block with multiple keys. Works as a library and as a CLI. Using BouncyCastle.

🔐 PGPSplitter

Tiny tool to read every PGP key in a single block.

This tool should not be particularly used in complex applications because BouncyCastle offers a broad enough API. It was designed to facilitate this specific operation while keeping a clean structure.

This is a tool for personal use mainly, but you have every right to use it and contribute to it.

🖥️ Use as a CLI

Download the jar from Releases.

--file -f <file path> : Split keys from file
--url -u <url> : Split keys from url
You can add --private after all parameters if the input concerns private keys.

Examples:
java -jar PGPSplitter.jar -f keys.asc
java -jar PGPSplitter.jar -u https://github.com/YvanMazy.gpg
java -jar PGPSplitter.jar -f my-keys.asc --private

📚 Use as a library

Last version:

repositories {
    maven { url 'https://jitpack.io' }
}

dependencies {
    implementation 'com.github.YvanMazy:PGPSplitter:VERSION'
}

<repositories>
    <repository>
        <id>jitpack.io</id>
        <url>https://jitpack.io</url>
    </repository>
</repositories>

<dependencies>
    <dependency>
        <groupId>com.github.YvanMazy</groupId>
        <artifactId>PGPSplitter</artifactId>
        <version>VERSION</version>
    </dependency>
</dependencies>

Examples

Display user ids from url:

try (final PGPSplitter splitter = new PGPSplitter(URI.create("https://github.com/YvanMazy.gpg").toURL().openStream())) {
    splitter.streamPublicKeys()
            .map(PGPPublicKeyRing::getPublicKey)
            .map(PGPPublicKey::getUserIDs)
            .filter(Iterator::hasNext)
            .map(Iterator::next)
            .forEach(System.out::println);
} catch (final IOException | PGPException exception) {
    LOGGER.error("Failed to split keys", exception);
}

Write every key in a separate file:

try (final PGPSplitter splitter = new PGPSplitter(Files.newInputStream(Path.of("all-keys.asc")))) {
    for (final PGPPublicKeyRing ring : splitter.toPublicKeyCollection()) {
        PGPFileUtil.write(ring, Path.of(PGPFileUtil.getFormattedName(ring.getPublicKey()) + ".asc"));
    }
} catch (final IOException | PGPException exception) {
    LOGGER.error("Failed to split keys", exception);
}