protected SecretKey engineGenerateSecret(
KeySpec keySpec)
throws InvalidKeySpecException
{
if (keySpec instanceof PBEKeySpec)
{
PBEKeySpec pbeSpec = (PBEKeySpec)keySpec;
CipherParameters param;
if (pbeSpec.getSalt() == null)
{
return new BCPBEKey(this.algName, this.algOid, scheme, digest, keySize, ivSize, pbeSpec, null);
}
if (forCipher)
{
param = PBE.Util.makePBEParameters(pbeSpec, scheme, digest, keySize, ivSize);
}
else
{
param = PBE.Util.makePBEMacParameters(pbeSpec, scheme, digest, keySize);
}
return new BCPBEKey(this.algName, this.algOid, scheme, digest, keySize, ivSize, pbeSpec, param);
}
throw new InvalidKeySpecException("Invalid KeySpec");
}
}