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package org.bouncycastle.jcajce.provider.symmetric.util;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.KeySpec;
import javax.crypto.SecretKey;
import javax.crypto.spec.PBEKeySpec;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.crypto.CipherParameters;
public class PBESecretKeyFactory
extends BaseSecretKeyFactory
implements PBE
{
private boolean forCipher;
private int scheme;
private int digest;
private int keySize;
private int ivSize;
public PBESecretKeyFactory(
String algorithm,
ASN1ObjectIdentifier oid,
boolean forCipher,
int scheme,
int digest,
int keySize,
int ivSize)
{
super(algorithm, oid);
this.forCipher = forCipher;
this.scheme = scheme;
this.digest = digest;
this.keySize = keySize;
this.ivSize = ivSize;
}
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");
}
}
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