Get public/private keys from jose4j for check JWT in jwt.io

JWT.io
1

I’m debugging some JWT stuff and have generated key with RsaJwkGenerator.generateJwk(2048). I successfully export/import keys to json file.
Now I need to export private key in some usefull format to check JWT on jwt.io (and use in other apps).
Any ideas how to export private key?

2

Ok, found the solution.

  1. Export key with "-----BEGIN PRIVATE KEY-----\n"+Base64.getEncoder().encodeToString(rsaJsonWebKey.getRsaPrivateKey()).replaceAll("(.{64})", "$1\n")+"\n-----END PRIVATE KEY-----"
  2. Repeat for Public Key (with “PUBLIC KEY” stanza)
  3. Don’t forget to change Algorithm in jwt.io
  4. Paste both keys to appropriate fields.
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