package org.bouncycastle.jce.provider.symmetric;
import org.bouncycastle.crypto.BufferedBlockCipher;
import org.bouncycastle.crypto.CipherKeyGenerator;
import org.bouncycastle.crypto.engines.AESEngine;
import org.bouncycastle.crypto.engines.AESFastEngine;
import org.bouncycastle.crypto.engines.AESWrapEngine;
import org.bouncycastle.crypto.engines.RFC3211WrapEngine;
import org.bouncycastle.crypto.modes.CBCBlockCipher;
import org.bouncycastle.crypto.modes.CFBBlockCipher;
import org.bouncycastle.crypto.modes.OFBBlockCipher;
import org.bouncycastle.jce.provider.JCEBlockCipher;
import org.bouncycastle.jce.provider.JCEKeyGenerator;
import org.bouncycastle.jce.provider.JDKAlgorithmParameterGenerator;
import org.bouncycastle.jce.provider.JDKAlgorithmParameters;
import org.bouncycastle.jce.provider.WrapCipherSpi;
import javax.crypto.spec.IvParameterSpec;
import java.security.AlgorithmParameters;
import java.security.InvalidAlgorithmParameterException;
import java.security.SecureRandom;
import java.security.spec.AlgorithmParameterSpec;
public final class AES
{
private AES()
{
}
public static class ECB
extends JCEBlockCipher
{
public ECB()
{
super(new AESFastEngine());
}
}
public static class CBC
extends JCEBlockCipher
{
public CBC()
{
super(new CBCBlockCipher(new AESFastEngine()), 128);
}
}
static public class CFB
extends JCEBlockCipher
{
public CFB()
{
super(new BufferedBlockCipher(new CFBBlockCipher(new AESFastEngine(), 128)), 128);
}
}
static public class OFB
extends JCEBlockCipher
{
public OFB()
{
super(new BufferedBlockCipher(new OFBBlockCipher(new AESFastEngine(), 128)), 128);
}
}
static public class Wrap
extends WrapCipherSpi
{
public Wrap()
{
super(new AESWrapEngine());
}
}
public static class RFC3211Wrap
extends WrapCipherSpi
{
public RFC3211Wrap()
{
super(new RFC3211WrapEngine(new AESEngine()), 16);
}
}
public static class KeyGen
extends JCEKeyGenerator
{
public KeyGen()
{
this(192);
}
public KeyGen(int keySize)
{
super("AES", keySize, new CipherKeyGenerator());
}
}
public static class KeyGen128
extends KeyGen
{
public KeyGen128()
{
super(128);
}
}
public static class KeyGen192
extends KeyGen
{
public KeyGen192()
{
super(192);
}
}
public static class KeyGen256
extends KeyGen
{
public KeyGen256()
{
super(256);
}
}
public static class AlgParamGen
extends JDKAlgorithmParameterGenerator
{
protected void engineInit(
AlgorithmParameterSpec genParamSpec,
SecureRandom random)
throws InvalidAlgorithmParameterException
{
throw new InvalidAlgorithmParameterException("No supported AlgorithmParameterSpec for AES parameter generation.");
}
protected AlgorithmParameters engineGenerateParameters()
{
byte[] iv = new byte[16];
if (random == null)
{
random = new SecureRandom();
}
random.nextBytes(iv);
AlgorithmParameters params;
try
{
params = AlgorithmParameters.getInstance("AES", "BC");
params.init(new IvParameterSpec(iv));
}
catch (Exception e)
{
throw new RuntimeException(e.getMessage());
}
return params;
}
}
public static class AlgParams
extends JDKAlgorithmParameters.IVAlgorithmParameters
{
protected String engineToString()
{
return "AES IV";
}
}
}