Using EdDSA triggers NoSuchAlgorithmException

[Severin Wischmann]

Trying to use the EdDSA algorithm leads to the following exception.

org.jose4j.lang.JoseException: Couldn't find EDDSA KeyPairGenerator! java.security.NoSuchAlgorithmException: EDDSA KeyPairGenerator not available
at org.jose4j.keys.KeyPairUtil.getKeyPairGenerator(KeyPairUtil.java:77)
at org.jose4j.keys.OctetKeyPairUtil.generateKeyPair(OctetKeyPairUtil.java:45)
at org.jose4j.jwk.OkpJwkGenerator.generateJwk(OkpJwkGenerator.java:24)
at org.jose4j.jwk.OkpJwkGenerator.generateJwk(OkpJwkGenerator.java:13)

This is because getAlgorithm() in src/main/java/org/jose4j/keys/EdDsaKeyUtil.java returns “EDDSA” which is not a valid algorithm. It should return ED25519 or ED448 depending on which algorithm is actually being used.

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[Brian Campbell]

On what version of java are you encountering this? EdDSA support was introduced in Java 17 AFAIK.

It is a standard KeyPairGenerator algorithm name: https://docs.oracle.com/en/java/javase/17/docs/specs/security/standard-names.html#keypairgenerator-algorithms

And this works https://bitbucket.org/b_c/jose4j/wiki/JWT Examples#markdown-header-producing-and-consuming-signed-and-encrypted-jwt-using-rfc8037s-ed25519-eddsa-and-x25519-ecdh

[Severin Wischmann]

Yes, sorry. Apparently, I got my Java versions mixed up. This was on Java11 which does not support EDDSA yet