The KJUR.crypto.Signature class is a very similar to Java JCE java.security.Signature class for digital signature algorithm calculation. So it's easy to learn. Here is a basic example for 'SHA1withRSA ...
@FlavioImbertDomingos Looks like you're missing the BouncyCastle jar? Has anything changed in your Keywhiz set-up since 0.8? It might be helpful if you could show your YAML config. @alokmenghrajani ...