protected void engineInit(Key key, AlgorithmParameterSpec params)
throws InvalidKeyException, InvalidAlgorithmParameterException {
CipherParameters param;
if (key == null) {
throw new InvalidKeyException("key is null");
}
if (key instanceof JCEPBEKey) {
JCEPBEKey k = (JCEPBEKey) key;
if (k.getParam() != null) {
param = k.getParam();
} else if (params instanceof PBEParameterSpec) {
param = PBE.Util.makePBEMacParameters(k, params);
} else {
throw new InvalidAlgorithmParameterException("PBE requires PBE parameters to be set.");
}
} else if (params instanceof IvParameterSpec) {
param =
new ParametersWithIV(
new KeyParameter(key.getEncoded()), ((IvParameterSpec) params).getIV());
} else if (params == null) {
param = new KeyParameter(key.getEncoded());
} else {
throw new InvalidAlgorithmParameterException("unknown parameter type.");
}
macEngine.init(param);
}
