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JSignify

JSignify is a very basic Java library that supports verifying (OpenBSD) Signify signatures. JSignify uses Google's Tink for the verification of the Ed25519 signatures.

Sample

Verifying the signature of a message (using Base64 strings instead of files).

String publicKey = "RWRm/JNSNUb77CmSMXBAA5Owr4XzPbRO/PKDXXLIUfOgFDd/F8hT8p5t";
String signature = "RWRm/JNSNUb77AmgjFuNCA6+3wwVotARqp2BqrG+ZoqFaK2PB8pW/Acpo660s+DmF1pxJOTB8uXp6b1S1N+sZLZwx8G6tnxSIg0=";
byte[] message = "testmessage\n".getBytes(UTF_8);

try {
  SignifyVerifier verifier = new SignifyVerifier(publicKey);
  verifier.verify(signature, message);
} catch (VerificationFailedException e) {
  // Handle signature verification failed...
} catch (Exception e) {
  // Handle other exceptions...
}

Supported use cases

  • verifying a Signify signature of a message against a public key (file based)
  • verifying a Signify signature of a message against a public key (with Base64 signatures and public keys)

Not (yet) supported use cases

  • signing of messages
  • creating key pairs
  • verifying a GZIP embedded Signify signature against a public key
  • verifying a SHA-256 checksum list and the corresponding files

Building

To build JSignify locally you need at least a Java 11 JDK (e.g. OpenJDK). For development IntelliJ IDEA Community Edition can be used.

Build with:

./gradlew clean build

License

Licensed under Apache License Version 2.0

Dependencies

Contributors