case SSH_DSS: {
try {
SignatureDSA dsa = AlgorithmManager.getManager().createAlgorithm(Algorithms.SIGNATURE_DSS);
dsa.setPrvKey(_prvKeyDSA, _pDSA, _qDSA, _gDSA);
dsa.update(data);
byte[] sig = dsa.sign();
byte[] buffer = new byte[KeyType.SSH_DSS.toString().length() + 4 + sig.length + 4];
Buffer buf = new Buffer(buffer);
buf.putString(KeyType.SSH_DSS.getBytes());
buf.putString(sig);
return buffer;