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package org.bouncycastle.jcajce.provider.digest;

import org.bouncycastle.crypto.CipherKeyGenerator;
import org.bouncycastle.crypto.digests.KeccakDigest;
import org.bouncycastle.crypto.macs.HMac;
import org.bouncycastle.jcajce.provider.config.ConfigurableProvider;
import org.bouncycastle.jcajce.provider.symmetric.util.BaseKeyGenerator;
import org.bouncycastle.jcajce.provider.symmetric.util.BaseMac;

public class Keccak
{
    private Keccak()
    {

    }

    static public class DigestKeccak
        extends BCMessageDigest
        implements Cloneable
    {
        public DigestKeccak(int size)
        {
            super(new KeccakDigest(size));
        }

        public Object clone()
            throws CloneNotSupportedException
        {
            BCMessageDigest d = (BCMessageDigest)super.clone();
            d.digest = new KeccakDigest((KeccakDigest)digest);

            return d;
        }
    }

    static public class Digest224
        extends DigestKeccak
    {
        public Digest224()
        {
            super(224);
        }
    }

    static public class Digest256
        extends DigestKeccak
    {
        public Digest256()
        {
            super(256);
        }
    }

    static public class Digest288
        extends DigestKeccak
    {
        public Digest288()
        {
            super(288);
        }
    }

    static public class Digest384
        extends DigestKeccak
    {
        public Digest384()
        {
            super(384);
        }
    }

    static public class Digest512
        extends DigestKeccak
    {
        public Digest512()
        {
            super(512);
        }
    }

    public static class HashMac224
        extends BaseMac
    {
        public HashMac224()
        {
            super(new HMac(new KeccakDigest(224)));
        }
    }

    public static class HashMac256
        extends BaseMac
    {
        public HashMac256()
        {
            super(new HMac(new KeccakDigest(256)));
        }
    }

    public static class HashMac288
        extends BaseMac
    {
        public HashMac288()
        {
            super(new HMac(new KeccakDigest(288)));
        }
    }

    public static class HashMac384
        extends BaseMac
    {
        public HashMac384()
        {
            super(new HMac(new KeccakDigest(384)));
        }
    }

    public static class HashMac512
        extends BaseMac
    {
        public HashMac512()
        {
            super(new HMac(new KeccakDigest(512)));
        }
    }

    public static class KeyGenerator224
        extends BaseKeyGenerator
    {
        public KeyGenerator224()
        {
            super("HMACKECCAK224", 224, new CipherKeyGenerator());
        }
    }

    public static class KeyGenerator256
        extends BaseKeyGenerator
    {
        public KeyGenerator256()
        {
            super("HMACKECCAK256", 256, new CipherKeyGenerator());
        }
    }

    public static class KeyGenerator288
        extends BaseKeyGenerator
    {
        public KeyGenerator288()
        {
            super("HMACKECCAK288", 288, new CipherKeyGenerator());
        }
    }

    public static class KeyGenerator384
        extends BaseKeyGenerator
    {
        public KeyGenerator384()
        {
            super("HMACKECCAK384", 384, new CipherKeyGenerator());
        }
    }

    public static class KeyGenerator512
        extends BaseKeyGenerator
    {
        public KeyGenerator512()
        {
            super("HMACKECCAK512", 512, new CipherKeyGenerator());
        }
    }

    public static class Mappings
        extends DigestAlgorithmProvider
    {
        private static final String PREFIX = Keccak.class.getName();

        public Mappings()
        {
        }

        public void configure(ConfigurableProvider provider)
        {
            provider.addAlgorithm("MessageDigest.KECCAK-224", PREFIX + "$Digest224");
            provider.addAlgorithm("MessageDigest.KECCAK-288", PREFIX + "$Digest288");
            provider.addAlgorithm("MessageDigest.KECCAK-256", PREFIX + "$Digest256");
            provider.addAlgorithm("MessageDigest.KECCAK-384", PREFIX + "$Digest384");
            provider.addAlgorithm("MessageDigest.KECCAK-512", PREFIX + "$Digest512");

            addHMACAlgorithm(provider, "KECCAK224", PREFIX + "$HashMac224", PREFIX + "$KeyGenerator224");
            addHMACAlgorithm(provider, "KECCAK256", PREFIX + "$HashMac256", PREFIX + "$KeyGenerator256");
            addHMACAlgorithm(provider, "KECCAK288", PREFIX + "$HashMac288", PREFIX + "$KeyGenerator288");
            addHMACAlgorithm(provider, "KECCAK384", PREFIX + "$HashMac384", PREFIX + "$KeyGenerator384");
            addHMACAlgorithm(provider, "KECCAK512", PREFIX + "$HashMac512", PREFIX + "$KeyGenerator512");
        }
    }
}