Signature Example

 ISignature dss = SignatureFactory.getInstance("DSS");
 Map attrib = new HashMap();
 attrib.put(ISignature.SIGNER_KEY, privateDsaKey);
 dss.setupSign(attrib);
 
 dss.update(message, 0, message.length);
 Object sig = dss.sign();
 
 ISignatureCodec codec = new DSSSignatureRawCodec();
 byte[] encoded = codec.encodeSignature(sig);
 
 Object sig2 = codec.decodeSignature(encoded);
 
 attrib.clear();
 attrib.put(ISignature.VERIFIER_KEY, publicDsaKey);
 dss.setupVerify(attrib);
 
 dss.update(message, 0, message.length);
 boolean valid = dss.verify(sig);
 

diagrams/sign_verify_seq_diag.png