private static byte[] testParams(AlgorithmParameters rc2Params, RC2ParameterSpec rc2Spec)
throws Exception {
// test getParameterSpec returns object equal to input
rc2Params.init(rc2Spec);
RC2ParameterSpec rc2OtherSpec =
(RC2ParameterSpec) rc2Params.getParameterSpec(RC2ParameterSpec.class);
if (!rc2Spec.equals(rc2OtherSpec)) {
throw new Exception("AlgorithmParameterSpecs should be equal");
}
// test RC2ParameterSpec with RC2 Cipher
Cipher rc2Cipher = Cipher.getInstance("RC2/CBC/PKCS5PADDING", "SunJCE");
rc2Cipher.init(
Cipher.ENCRYPT_MODE, new SecretKeySpec("secret".getBytes("ASCII"), "RC2"), rc2Spec);
// get IV
byte[] iv = rc2Cipher.getIV();
if (!Arrays.equals(iv, rc2Spec.getIV())) {
throw new Exception("ivs should be equal");
}
// test encoding and decoding
byte[] encoded = rc2Params.getEncoded();
AlgorithmParameters params = AlgorithmParameters.getInstance("RC2");
params.init(encoded);
// test RC2 AlgorithmParameters with RC2 Cipher
rc2Cipher.init(
Cipher.ENCRYPT_MODE, new SecretKeySpec("secret".getBytes("ASCII"), "RC2"), params);
// get IV
iv = rc2Cipher.getIV();
if (!Arrays.equals(iv, rc2Spec.getIV())) {
throw new Exception("ivs should be equal");
}
return encoded;
}
