hashedGen.setSignerUserID(true, TEST_USER_ID);
hashedGen.setPreferredCompressionAlgorithms(false, PREFERRED_COMPRESSION_ALGORITHMS);
hashedGen.setPreferredHashAlgorithms(false, PREFERRED_HASH_ALGORITHMS);
hashedGen.setPreferredSymmetricAlgorithms(false, PREFERRED_SYMMETRIC_ALGORITHMS);
sGen.setHashedSubpackets(hashedGen.generate());
sGen.setUnhashedSubpackets(unhashedGen.generate());
sig = sGen.generateCertification(secretDSAKey.getPublicKey(), secretKey.getPublicKey());
byte[] sigBytes = sig.getEncoded();