package org.bouncycastle.jcajce.provider.symmetric;
import java.io.IOException;
import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.InvalidParameterSpecException;
import javax.crypto.spec.PBEParameterSpec;
import org.bouncycastle.asn1.ASN1Encoding;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.pkcs.PBKDF2Params;
import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
import org.bouncycastle.jcajce.provider.config.ConfigurableProvider;
import org.bouncycastle.jcajce.provider.symmetric.util.BaseAlgorithmParameters;
import org.bouncycastle.jcajce.provider.util.AlgorithmProvider;
public class PBEPBKDF2
{
private PBEPBKDF2()
{
}
public static class AlgParams
extends BaseAlgorithmParameters
{
PBKDF2Params params;
protected byte[] engineGetEncoded()
{
try
{
return params.getEncoded(ASN1Encoding.DER);
}
catch (IOException e)
{
throw new RuntimeException("Oooops! " + e.toString());
}
}
protected byte[] engineGetEncoded(
String format)
{
if (this.isASN1FormatString(format))
{
return engineGetEncoded();
}
return null;
}
protected AlgorithmParameterSpec localEngineGetParameterSpec(
Class paramSpec)
throws InvalidParameterSpecException
{
if (paramSpec == PBEParameterSpec.class)
{
return new PBEParameterSpec(params.getSalt(),
params.getIterationCount().intValue());
}
throw new InvalidParameterSpecException("unknown parameter spec passed to PBKDF2 PBE parameters object.");
}
protected void engineInit(
AlgorithmParameterSpec paramSpec)
throws InvalidParameterSpecException
{
if (!(paramSpec instanceof PBEParameterSpec))
{
throw new InvalidParameterSpecException("PBEParameterSpec required to initialise a PBKDF2 PBE parameters algorithm parameters object");
}
PBEParameterSpec pbeSpec = (PBEParameterSpec)paramSpec;
this.params = new PBKDF2Params(pbeSpec.getSalt(),
pbeSpec.getIterationCount());
}
protected void engineInit(
byte[] params)
throws IOException
{
this.params = PBKDF2Params.getInstance(ASN1Primitive.fromByteArray(params));
}
protected void engineInit(
byte[] params,
String format)
throws IOException
{
if (this.isASN1FormatString(format))
{
engineInit(params);
return;
}
throw new IOException("Unknown parameters format in PBKDF2 parameters object");
}
protected String engineToString()
{
return "PBKDF2 Parameters";
}
}
public static class Mappings
extends AlgorithmProvider
{
private static final String PREFIX = PBEPBKDF2.class.getName();
public Mappings()
{
}
public void configure(ConfigurableProvider provider)
{
provider.addAlgorithm("AlgorithmParameters.PBKDF2", PREFIX + "$AlgParams");
provider.addAlgorithm("Alg.Alias.AlgorithmParameters." + PKCSObjectIdentifiers.id_PBKDF2, "PBKDF2");
}
}
}