Java tutorial
package org.bouncycastle.jcajce.provider.digest; import org.bouncycastle.crypto.CipherKeyGenerator; import org.bouncycastle.crypto.digests.SkeinDigest; import org.bouncycastle.crypto.macs.HMac; import org.bouncycastle.crypto.macs.SkeinMac; 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 Skein { private Skein() { } public static class DigestSkein256 extends BCMessageDigest implements Cloneable { public DigestSkein256(int outputSize) { super(new SkeinDigest(SkeinDigest.SKEIN_256, outputSize)); } public Object clone() throws CloneNotSupportedException { BCMessageDigest d = (BCMessageDigest) super.clone(); d.digest = new SkeinDigest((SkeinDigest) digest); return d; } } public static class Digest_256_128 extends DigestSkein256 { public Digest_256_128() { super(128); } } public static class Digest_256_160 extends DigestSkein256 { public Digest_256_160() { super(160); } } public static class Digest_256_224 extends DigestSkein256 { public Digest_256_224() { super(224); } } public static class Digest_256_256 extends DigestSkein256 { public Digest_256_256() { super(256); } } public static class DigestSkein512 extends BCMessageDigest implements Cloneable { public DigestSkein512(int outputSize) { super(new SkeinDigest(SkeinDigest.SKEIN_512, outputSize)); } public Object clone() throws CloneNotSupportedException { BCMessageDigest d = (BCMessageDigest) super.clone(); d.digest = new SkeinDigest((SkeinDigest) digest); return d; } } public static class Digest_512_128 extends DigestSkein512 { public Digest_512_128() { super(128); } } public static class Digest_512_160 extends DigestSkein512 { public Digest_512_160() { super(160); } } public static class Digest_512_224 extends DigestSkein512 { public Digest_512_224() { super(224); } } public static class Digest_512_256 extends DigestSkein512 { public Digest_512_256() { super(256); } } public static class Digest_512_384 extends DigestSkein512 { public Digest_512_384() { super(384); } } public static class Digest_512_512 extends DigestSkein512 { public Digest_512_512() { super(512); } } public static class DigestSkein1024 extends BCMessageDigest implements Cloneable { public DigestSkein1024(int outputSize) { super(new SkeinDigest(SkeinDigest.SKEIN_1024, outputSize)); } public Object clone() throws CloneNotSupportedException { BCMessageDigest d = (BCMessageDigest) super.clone(); d.digest = new SkeinDigest((SkeinDigest) digest); return d; } } public static class Digest_1024_384 extends DigestSkein1024 { public Digest_1024_384() { super(384); } } public static class Digest_1024_512 extends DigestSkein1024 { public Digest_1024_512() { super(512); } } public static class Digest_1024_1024 extends DigestSkein1024 { public Digest_1024_1024() { super(1024); } } /** * Skein HMac */ public static class HashMac_256_128 extends BaseMac { public HashMac_256_128() { super(new HMac(new SkeinDigest(SkeinDigest.SKEIN_256, 128))); } } public static class HashMac_256_160 extends BaseMac { public HashMac_256_160() { super(new HMac(new SkeinDigest(SkeinDigest.SKEIN_256, 160))); } } public static class HashMac_256_224 extends BaseMac { public HashMac_256_224() { super(new HMac(new SkeinDigest(SkeinDigest.SKEIN_256, 224))); } } public static class HashMac_256_256 extends BaseMac { public HashMac_256_256() { super(new HMac(new SkeinDigest(SkeinDigest.SKEIN_256, 256))); } } public static class HashMac_512_128 extends BaseMac { public HashMac_512_128() { super(new HMac(new SkeinDigest(SkeinDigest.SKEIN_512, 128))); } } public static class HashMac_512_160 extends BaseMac { public HashMac_512_160() { super(new HMac(new SkeinDigest(SkeinDigest.SKEIN_512, 160))); } } public static class HashMac_512_224 extends BaseMac { public HashMac_512_224() { super(new HMac(new SkeinDigest(SkeinDigest.SKEIN_512, 224))); } } public static class HashMac_512_256 extends BaseMac { public HashMac_512_256() { super(new HMac(new SkeinDigest(SkeinDigest.SKEIN_512, 256))); } } public static class HashMac_512_384 extends BaseMac { public HashMac_512_384() { super(new HMac(new SkeinDigest(SkeinDigest.SKEIN_512, 384))); } } public static class HashMac_512_512 extends BaseMac { public HashMac_512_512() { super(new HMac(new SkeinDigest(SkeinDigest.SKEIN_512, 512))); } } public static class HashMac_1024_384 extends BaseMac { public HashMac_1024_384() { super(new HMac(new SkeinDigest(SkeinDigest.SKEIN_1024, 384))); } } public static class HashMac_1024_512 extends BaseMac { public HashMac_1024_512() { super(new HMac(new SkeinDigest(SkeinDigest.SKEIN_1024, 512))); } } public static class HashMac_1024_1024 extends BaseMac { public HashMac_1024_1024() { super(new HMac(new SkeinDigest(SkeinDigest.SKEIN_1024, 1024))); } } public static class HMacKeyGenerator_256_128 extends BaseKeyGenerator { public HMacKeyGenerator_256_128() { super("HMACSkein-256-128", 128, new CipherKeyGenerator()); } } public static class HMacKeyGenerator_256_160 extends BaseKeyGenerator { public HMacKeyGenerator_256_160() { super("HMACSkein-256-160", 160, new CipherKeyGenerator()); } } public static class HMacKeyGenerator_256_224 extends BaseKeyGenerator { public HMacKeyGenerator_256_224() { super("HMACSkein-256-224", 224, new CipherKeyGenerator()); } } public static class HMacKeyGenerator_256_256 extends BaseKeyGenerator { public HMacKeyGenerator_256_256() { super("HMACSkein-256-256", 256, new CipherKeyGenerator()); } } public static class HMacKeyGenerator_512_128 extends BaseKeyGenerator { public HMacKeyGenerator_512_128() { super("HMACSkein-512-128", 128, new CipherKeyGenerator()); } } public static class HMacKeyGenerator_512_160 extends BaseKeyGenerator { public HMacKeyGenerator_512_160() { super("HMACSkein-512-160", 160, new CipherKeyGenerator()); } } public static class HMacKeyGenerator_512_224 extends BaseKeyGenerator { public HMacKeyGenerator_512_224() { super("HMACSkein-512-224", 224, new CipherKeyGenerator()); } } public static class HMacKeyGenerator_512_256 extends BaseKeyGenerator { public HMacKeyGenerator_512_256() { super("HMACSkein-512-256", 256, new CipherKeyGenerator()); } } public static class HMacKeyGenerator_512_384 extends BaseKeyGenerator { public HMacKeyGenerator_512_384() { super("HMACSkein-512-384", 384, new CipherKeyGenerator()); } } public static class HMacKeyGenerator_512_512 extends BaseKeyGenerator { public HMacKeyGenerator_512_512() { super("HMACSkein-512-512", 512, new CipherKeyGenerator()); } } public static class HMacKeyGenerator_1024_384 extends BaseKeyGenerator { public HMacKeyGenerator_1024_384() { super("HMACSkein-1024-384", 384, new CipherKeyGenerator()); } } public static class HMacKeyGenerator_1024_512 extends BaseKeyGenerator { public HMacKeyGenerator_1024_512() { super("HMACSkein-1024-512", 512, new CipherKeyGenerator()); } } public static class HMacKeyGenerator_1024_1024 extends BaseKeyGenerator { public HMacKeyGenerator_1024_1024() { super("HMACSkein-1024-1024", 1024, new CipherKeyGenerator()); } } /* * Skein-MAC */ public static class SkeinMac_256_128 extends BaseMac { public SkeinMac_256_128() { super(new SkeinMac(SkeinMac.SKEIN_256, 128)); } } public static class SkeinMac_256_160 extends BaseMac { public SkeinMac_256_160() { super(new SkeinMac(SkeinMac.SKEIN_256, 160)); } } public static class SkeinMac_256_224 extends BaseMac { public SkeinMac_256_224() { super(new SkeinMac(SkeinMac.SKEIN_256, 224)); } } public static class SkeinMac_256_256 extends BaseMac { public SkeinMac_256_256() { super(new SkeinMac(SkeinMac.SKEIN_256, 256)); } } public static class SkeinMac_512_128 extends BaseMac { public SkeinMac_512_128() { super(new SkeinMac(SkeinMac.SKEIN_512, 128)); } } public static class SkeinMac_512_160 extends BaseMac { public SkeinMac_512_160() { super(new SkeinMac(SkeinMac.SKEIN_512, 160)); } } public static class SkeinMac_512_224 extends BaseMac { public SkeinMac_512_224() { super(new SkeinMac(SkeinMac.SKEIN_512, 224)); } } public static class SkeinMac_512_256 extends BaseMac { public SkeinMac_512_256() { super(new SkeinMac(SkeinMac.SKEIN_512, 256)); } } public static class SkeinMac_512_384 extends BaseMac { public SkeinMac_512_384() { super(new SkeinMac(SkeinMac.SKEIN_512, 384)); } } public static class SkeinMac_512_512 extends BaseMac { public SkeinMac_512_512() { super(new SkeinMac(SkeinMac.SKEIN_512, 512)); } } public static class SkeinMac_1024_384 extends BaseMac { public SkeinMac_1024_384() { super(new SkeinMac(SkeinMac.SKEIN_1024, 384)); } } public static class SkeinMac_1024_512 extends BaseMac { public SkeinMac_1024_512() { super(new SkeinMac(SkeinMac.SKEIN_1024, 512)); } } public static class SkeinMac_1024_1024 extends BaseMac { public SkeinMac_1024_1024() { super(new SkeinMac(SkeinMac.SKEIN_1024, 1024)); } } public static class SkeinMacKeyGenerator_256_128 extends BaseKeyGenerator { public SkeinMacKeyGenerator_256_128() { super("Skein-MAC-256-128", 128, new CipherKeyGenerator()); } } public static class SkeinMacKeyGenerator_256_160 extends BaseKeyGenerator { public SkeinMacKeyGenerator_256_160() { super("Skein-MAC-256-160", 160, new CipherKeyGenerator()); } } public static class SkeinMacKeyGenerator_256_224 extends BaseKeyGenerator { public SkeinMacKeyGenerator_256_224() { super("Skein-MAC-256-224", 224, new CipherKeyGenerator()); } } public static class SkeinMacKeyGenerator_256_256 extends BaseKeyGenerator { public SkeinMacKeyGenerator_256_256() { super("Skein-MAC-256-256", 256, new CipherKeyGenerator()); } } public static class SkeinMacKeyGenerator_512_128 extends BaseKeyGenerator { public SkeinMacKeyGenerator_512_128() { super("Skein-MAC-512-128", 128, new CipherKeyGenerator()); } } public static class SkeinMacKeyGenerator_512_160 extends BaseKeyGenerator { public SkeinMacKeyGenerator_512_160() { super("Skein-MAC-512-160", 160, new CipherKeyGenerator()); } } public static class SkeinMacKeyGenerator_512_224 extends BaseKeyGenerator { public SkeinMacKeyGenerator_512_224() { super("Skein-MAC-512-224", 224, new CipherKeyGenerator()); } } public static class SkeinMacKeyGenerator_512_256 extends BaseKeyGenerator { public SkeinMacKeyGenerator_512_256() { super("Skein-MAC-512-256", 256, new CipherKeyGenerator()); } } public static class SkeinMacKeyGenerator_512_384 extends BaseKeyGenerator { public SkeinMacKeyGenerator_512_384() { super("Skein-MAC-512-384", 384, new CipherKeyGenerator()); } } public static class SkeinMacKeyGenerator_512_512 extends BaseKeyGenerator { public SkeinMacKeyGenerator_512_512() { super("Skein-MAC-512-512", 512, new CipherKeyGenerator()); } } public static class SkeinMacKeyGenerator_1024_384 extends BaseKeyGenerator { public SkeinMacKeyGenerator_1024_384() { super("Skein-MAC-1024-384", 384, new CipherKeyGenerator()); } } public static class SkeinMacKeyGenerator_1024_512 extends BaseKeyGenerator { public SkeinMacKeyGenerator_1024_512() { super("Skein-MAC-1024-512", 512, new CipherKeyGenerator()); } } public static class SkeinMacKeyGenerator_1024_1024 extends BaseKeyGenerator { public SkeinMacKeyGenerator_1024_1024() { super("Skein-MAC-1024-1024", 1024, new CipherKeyGenerator()); } } public static class Mappings extends DigestAlgorithmProvider { private static final String PREFIX = Skein.class.getName(); public Mappings() { } public void configure(ConfigurableProvider provider) { // Skein sizes as used in "The Skein Hash Function Family 1.3" provider.addAlgorithm("MessageDigest.Skein-256-128", PREFIX + "$Digest_256_128"); provider.addAlgorithm("MessageDigest.Skein-256-160", PREFIX + "$Digest_256_160"); provider.addAlgorithm("MessageDigest.Skein-256-224", PREFIX + "$Digest_256_224"); provider.addAlgorithm("MessageDigest.Skein-256-256", PREFIX + "$Digest_256_256"); provider.addAlgorithm("MessageDigest.Skein-512-128", PREFIX + "$Digest_512_128"); provider.addAlgorithm("MessageDigest.Skein-512-160", PREFIX + "$Digest_512_160"); provider.addAlgorithm("MessageDigest.Skein-512-224", PREFIX + "$Digest_512_224"); provider.addAlgorithm("MessageDigest.Skein-512-256", PREFIX + "$Digest_512_256"); provider.addAlgorithm("MessageDigest.Skein-512-384", PREFIX + "$Digest_512_384"); provider.addAlgorithm("MessageDigest.Skein-512-512", PREFIX + "$Digest_512_512"); provider.addAlgorithm("MessageDigest.Skein-1024-384", PREFIX + "$Digest_1024_384"); provider.addAlgorithm("MessageDigest.Skein-1024-512", PREFIX + "$Digest_1024_512"); provider.addAlgorithm("MessageDigest.Skein-1024-1024", PREFIX + "$Digest_1024_1024"); addHMACAlgorithm(provider, "Skein-256-128", PREFIX + "$HashMac_256_128", PREFIX + "$HMacKeyGenerator_256_128"); addHMACAlgorithm(provider, "Skein-256-160", PREFIX + "$HashMac_256_160", PREFIX + "$HMacKeyGenerator_256_160"); addHMACAlgorithm(provider, "Skein-256-224", PREFIX + "$HashMac_256_224", PREFIX + "$HMacKeyGenerator_256_224"); addHMACAlgorithm(provider, "Skein-256-256", PREFIX + "$HashMac_256_256", PREFIX + "$HMacKeyGenerator_256_256"); addHMACAlgorithm(provider, "Skein-512-128", PREFIX + "$HashMac_512_128", PREFIX + "$HMacKeyGenerator_512_128"); addHMACAlgorithm(provider, "Skein-512-160", PREFIX + "$HashMac_512_160", PREFIX + "$HMacKeyGenerator_512_160"); addHMACAlgorithm(provider, "Skein-512-224", PREFIX + "$HashMac_512_224", PREFIX + "$HMacKeyGenerator_512_224"); addHMACAlgorithm(provider, "Skein-512-256", PREFIX + "$HashMac_512_256", PREFIX + "$HMacKeyGenerator_512_256"); addHMACAlgorithm(provider, "Skein-512-384", PREFIX + "$HashMac_512_384", PREFIX + "$HMacKeyGenerator_512_384"); addHMACAlgorithm(provider, "Skein-512-512", PREFIX + "$HashMac_512_512", PREFIX + "$HMacKeyGenerator_512_512"); addHMACAlgorithm(provider, "Skein-1024-384", PREFIX + "$HashMac_1024_384", PREFIX + "$HMacKeyGenerator_1024_384"); addHMACAlgorithm(provider, "Skein-1024-512", PREFIX + "$HashMac_1024_512", PREFIX + "$HMacKeyGenerator_1024_512"); addHMACAlgorithm(provider, "Skein-1024-1024", PREFIX + "$HashMac_1024_1024", PREFIX + "$HMacKeyGenerator_1024_1024"); addSkeinMacAlgorithm(provider, 256, 128); addSkeinMacAlgorithm(provider, 256, 160); addSkeinMacAlgorithm(provider, 256, 224); addSkeinMacAlgorithm(provider, 256, 256); addSkeinMacAlgorithm(provider, 512, 128); addSkeinMacAlgorithm(provider, 512, 160); addSkeinMacAlgorithm(provider, 512, 224); addSkeinMacAlgorithm(provider, 512, 256); addSkeinMacAlgorithm(provider, 512, 384); addSkeinMacAlgorithm(provider, 512, 512); addSkeinMacAlgorithm(provider, 1024, 384); addSkeinMacAlgorithm(provider, 1024, 512); addSkeinMacAlgorithm(provider, 1024, 1024); } private void addSkeinMacAlgorithm(ConfigurableProvider provider, int blockSize, int outputSize) { String mainName = "Skein-MAC-" + blockSize + "-" + outputSize; String algorithmClassName = PREFIX + "$SkeinMac_" + blockSize + "_" + outputSize; String keyGeneratorClassName = PREFIX + "$SkeinMacKeyGenerator_" + blockSize + "_" + outputSize; provider.addAlgorithm("Mac." + mainName, algorithmClassName); provider.addAlgorithm("Alg.Alias.Mac.Skein-MAC" + blockSize + "/" + outputSize, mainName); provider.addAlgorithm("KeyGenerator." + mainName, keyGeneratorClassName); provider.addAlgorithm("Alg.Alias.KeyGenerator.Skein-MAC" + blockSize + "/" + outputSize, mainName); } } }