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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8 with debug enabled.

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package org.bouncycastle.jcajce.provider.digest;

import org.bouncycastle.asn1.misc.MiscObjectIdentifiers;
import org.bouncycastle.crypto.digests.Blake2bDigest;
import org.bouncycastle.jcajce.provider.config.ConfigurableProvider;

public class Blake2b
{
    private Blake2b()
    {

    }

    static public class Blake2b512
        extends BCMessageDigest
        implements Cloneable
    {
        public Blake2b512()
        {
            super(new Blake2bDigest(512));
        }

        public Object clone()
            throws CloneNotSupportedException
        {
            Blake2b512 d = (Blake2b512)super.clone();
            d.digest = new Blake2bDigest((Blake2bDigest)digest);

            return d;
        }
    }

    static public class Blake2b384
        extends BCMessageDigest
        implements Cloneable
    {
        public Blake2b384()
        {
            super(new Blake2bDigest(384));
        }

        public Object clone()
            throws CloneNotSupportedException
        {
            Blake2b384 d = (Blake2b384)super.clone();
            d.digest = new Blake2bDigest((Blake2bDigest)digest);

            return d;
        }
    }

    static public class Blake2b256
        extends BCMessageDigest
        implements Cloneable
    {
        public Blake2b256()
        {
            super(new Blake2bDigest(256));
        }

        public Object clone()
            throws CloneNotSupportedException
        {
            Blake2b256 d = (Blake2b256)super.clone();
            d.digest = new Blake2bDigest((Blake2bDigest)digest);

            return d;
        }
    }

    static public class Blake2b160
        extends BCMessageDigest
        implements Cloneable
    {
        public Blake2b160()
        {
            super(new Blake2bDigest(160));
        }

        public Object clone()
            throws CloneNotSupportedException
        {
            Blake2b160 d = (Blake2b160)super.clone();
            d.digest = new Blake2bDigest((Blake2bDigest)digest);

            return d;
        }
    }

    public static class Mappings
        extends DigestAlgorithmProvider
    {
        private static final String PREFIX = Blake2b.class.getName();

        public Mappings()
        {
        }

        public void configure(ConfigurableProvider provider)
        {
            provider.addAlgorithm("MessageDigest.BLAKE2B-512", PREFIX + "$Blake2b512");
            provider.addAlgorithm("Alg.Alias.MessageDigest." + MiscObjectIdentifiers.id_blake2b512, "BLAKE2B-512");

            provider.addAlgorithm("MessageDigest.BLAKE2B-384", PREFIX + "$Blake2b384");
            provider.addAlgorithm("Alg.Alias.MessageDigest." + MiscObjectIdentifiers.id_blake2b384, "BLAKE2B-384");

            provider.addAlgorithm("MessageDigest.BLAKE2B-256", PREFIX + "$Blake2b256");
            provider.addAlgorithm("Alg.Alias.MessageDigest." + MiscObjectIdentifiers.id_blake2b256, "BLAKE2B-256");

            provider.addAlgorithm("MessageDigest.BLAKE2B-160", PREFIX + "$Blake2b160");
            provider.addAlgorithm("Alg.Alias.MessageDigest." + MiscObjectIdentifiers.id_blake2b160, "BLAKE2B-160");
        }
    }
}