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package org.spongycastle.jcajce.provider.symmetric;
import java.security.AlgorithmParameters;
import java.security.InvalidAlgorithmParameterException;
import java.security.SecureRandom;
import java.security.spec.AlgorithmParameterSpec;
import javax.crypto.spec.IvParameterSpec;
import org.spongycastle.crypto.BlockCipher;
import org.spongycastle.crypto.BufferedBlockCipher;
import org.spongycastle.crypto.CipherKeyGenerator;
import org.spongycastle.crypto.engines.RC6Engine;
import org.spongycastle.crypto.generators.Poly1305KeyGenerator;
import org.spongycastle.crypto.macs.GMac;
import org.spongycastle.crypto.modes.CBCBlockCipher;
import org.spongycastle.crypto.modes.CFBBlockCipher;
import org.spongycastle.crypto.modes.GCMBlockCipher;
import org.spongycastle.crypto.modes.OFBBlockCipher;
import org.spongycastle.jcajce.provider.config.ConfigurableProvider;
import org.spongycastle.jcajce.provider.symmetric.util.BaseAlgorithmParameterGenerator;
import org.spongycastle.jcajce.provider.symmetric.util.BaseBlockCipher;
import org.spongycastle.jcajce.provider.symmetric.util.BaseKeyGenerator;
import org.spongycastle.jcajce.provider.symmetric.util.BaseMac;
import org.spongycastle.jcajce.provider.symmetric.util.BlockCipherProvider;
import org.spongycastle.jcajce.provider.symmetric.util.IvAlgorithmParameters;
import org.spongycastle.jce.provider.BouncyCastleProvider;
public final class RC6
{
private RC6()
{
}
public static class ECB
extends BaseBlockCipher
{
public ECB()
{
super(new BlockCipherProvider()
{
public BlockCipher get()
{
return new RC6Engine();
}
});
}
}
public static class CBC
extends BaseBlockCipher
{
public CBC()
{
super(new CBCBlockCipher(new RC6Engine()), 128);
}
}
static public class CFB
extends BaseBlockCipher
{
public CFB()
{
super(new BufferedBlockCipher(new CFBBlockCipher(new RC6Engine(), 128)), 128);
}
}
static public class OFB
extends BaseBlockCipher
{
public OFB()
{
super(new BufferedBlockCipher(new OFBBlockCipher(new RC6Engine(), 128)), 128);
}
}
public static class GMAC
extends BaseMac
{
public GMAC()
{
super(new GMac(new GCMBlockCipher(new RC6Engine())));
}
}
public static class Poly1305
extends BaseMac
{
public Poly1305()
{
super(new org.spongycastle.crypto.macs.Poly1305(new RC6Engine()));
}
}
public static class Poly1305KeyGen
extends BaseKeyGenerator
{
public Poly1305KeyGen()
{
super("Poly1305-RC6", 256, new Poly1305KeyGenerator());
}
}
public static class KeyGen
extends BaseKeyGenerator
{
public KeyGen()
{
super("RC6", 256, new CipherKeyGenerator());
}
}
public static class AlgParamGen
extends BaseAlgorithmParameterGenerator
{
protected void engineInit(
AlgorithmParameterSpec genParamSpec,
SecureRandom random)
throws InvalidAlgorithmParameterException
{
throw new InvalidAlgorithmParameterException("No supported AlgorithmParameterSpec for RC6 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("RC6", BouncyCastleProvider.PROVIDER_NAME);
params.init(new IvParameterSpec(iv));
}
catch (Exception e)
{
throw new RuntimeException(e.getMessage());
}
return params;
}
}
public static class AlgParams
extends IvAlgorithmParameters
{
protected String engineToString()
{
return "RC6 IV";
}
}
public static class Mappings
extends SymmetricAlgorithmProvider
{
private static final String PREFIX = RC6.class.getName();
public Mappings()
{
}
public void configure(ConfigurableProvider provider)
{
provider.addAlgorithm("Cipher.RC6", PREFIX + "$ECB");
provider.addAlgorithm("KeyGenerator.RC6", PREFIX + "$KeyGen");
provider.addAlgorithm("AlgorithmParameters.RC6", PREFIX + "$AlgParams");
addGMacAlgorithm(provider, "RC6", PREFIX + "$GMAC", PREFIX + "$KeyGen");
addPoly1305Algorithm(provider, "RC6", PREFIX + "$Poly1305", PREFIX + "$Poly1305KeyGen");
}
}
}
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