// see JCE spec
protected AlgorithmParameters engineGetParameters() {
if (iv == null) {
return null;
}
IvParameterSpec ivSpec = new IvParameterSpec(iv);
try {
AlgorithmParameters params =
AlgorithmParameters.getInstance(keyAlgorithm, P11Util.getSunJceProvider());
params.init(ivSpec);
return params;
} catch (GeneralSecurityException e) {
// NoSuchAlgorithmException, NoSuchProviderException
// InvalidParameterSpecException
throw new ProviderException("Could not encode parameters", e);
}
}
// see JCE spec
protected void engineInit(int opmode, Key key, AlgorithmParameters params, SecureRandom random)
throws InvalidKeyException, InvalidAlgorithmParameterException {
byte[] ivValue;
if (params != null) {
try {
IvParameterSpec ivSpec = (IvParameterSpec) params.getParameterSpec(IvParameterSpec.class);
ivValue = ivSpec.getIV();
} catch (InvalidParameterSpecException e) {
throw new InvalidAlgorithmParameterException("Could not decode IV", e);
}
} else {
ivValue = null;
}
implInit(opmode, key, ivValue, random);
}