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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.CipherKeyGenerator;
import org.spongycastle.crypto.engines.RC532Engine;
import org.spongycastle.crypto.engines.RC564Engine;
import org.spongycastle.crypto.macs.CBCBlockCipherMac;
import org.spongycastle.crypto.macs.CFBBlockCipherMac;
import org.spongycastle.crypto.modes.CBCBlockCipher;
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.IvAlgorithmParameters;
import org.spongycastle.jcajce.provider.util.AlgorithmProvider;
import org.spongycastle.jce.provider.BouncyCastleProvider;
public final class RC5
{
private RC5()
{
}
/**
* RC5
*/
public static class ECB32
extends BaseBlockCipher
{
public ECB32()
{
super(new RC532Engine());
}
}
/**
* RC564
*/
public static class ECB64
extends BaseBlockCipher
{
public ECB64()
{
super(new RC564Engine());
}
}
public static class CBC32
extends BaseBlockCipher
{
public CBC32()
{
super(new CBCBlockCipher(new RC532Engine()), 64);
}
}
public static class KeyGen32
extends BaseKeyGenerator
{
public KeyGen32()
{
super("RC5", 128, new CipherKeyGenerator());
}
}
/**
* RC5
*/
public static class KeyGen64
extends BaseKeyGenerator
{
public KeyGen64()
{
super("RC5-64", 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 RC5 parameter generation.");
}
protected AlgorithmParameters engineGenerateParameters()
{
byte[] iv = new byte[8];
if (random == null)
{
random = new SecureRandom();
}
random.nextBytes(iv);
AlgorithmParameters params;
try
{
params = AlgorithmParameters.getInstance("RC5", BouncyCastleProvider.PROVIDER_NAME);
params.init(new IvParameterSpec(iv));
}
catch (Exception e)
{
throw new RuntimeException(e.getMessage());
}
return params;
}
}
public static class Mac32
extends BaseMac
{
public Mac32()
{
super(new CBCBlockCipherMac(new RC532Engine()));
}
}
public static class CFB8Mac32
extends BaseMac
{
public CFB8Mac32()
{
super(new CFBBlockCipherMac(new RC532Engine()));
}
}
public static class AlgParams
extends IvAlgorithmParameters
{
protected String engineToString()
{
return "RC5 IV";
}
}
public static class Mappings
extends AlgorithmProvider
{
private static final String PREFIX = RC5.class.getName();
public Mappings()
{
}
public void configure(ConfigurableProvider provider)
{
provider.addAlgorithm("Cipher.RC5", PREFIX + "$ECB32");
provider.addAlgorithm("Alg.Alias.Cipher.RC5-32", "RC5");
provider.addAlgorithm("Cipher.RC5-64", PREFIX + "$ECB64");
provider.addAlgorithm("KeyGenerator.RC5", PREFIX + "$KeyGen32");
provider.addAlgorithm("Alg.Alias.KeyGenerator.RC5-32", "RC5");
provider.addAlgorithm("KeyGenerator.RC5-64", PREFIX + "$KeyGen64");
provider.addAlgorithm("AlgorithmParameters.RC5", PREFIX + "$AlgParams");
provider.addAlgorithm("AlgorithmParameters.RC5-64", PREFIX + "$AlgParams");
provider.addAlgorithm("Mac.RC5MAC", PREFIX + "$Mac32");
provider.addAlgorithm("Alg.Alias.Mac.RC5", "RC5MAC");
provider.addAlgorithm("Mac.RC5MAC/CFB8", PREFIX + "$CFB8Mac32");
provider.addAlgorithm("Alg.Alias.Mac.RC5/CFB8", "RC5MAC/CFB8");
}
}
}
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