diff options
Diffstat (limited to 'bcprov/src/main/java/org/bouncycastle/crypto/digests/SkeinDigest.java')
-rw-r--r-- | bcprov/src/main/java/org/bouncycastle/crypto/digests/SkeinDigest.java | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/bcprov/src/main/java/org/bouncycastle/crypto/digests/SkeinDigest.java b/bcprov/src/main/java/org/bouncycastle/crypto/digests/SkeinDigest.java deleted file mode 100644 index ae1dbd6..0000000 --- a/bcprov/src/main/java/org/bouncycastle/crypto/digests/SkeinDigest.java +++ /dev/null @@ -1,115 +0,0 @@ -package org.bouncycastle.crypto.digests; - -import org.bouncycastle.crypto.ExtendedDigest; -import org.bouncycastle.crypto.engines.ThreefishEngine; -import org.bouncycastle.crypto.params.SkeinParameters; -import org.bouncycastle.util.Memoable; - -/** - * Implementation of the Skein parameterised hash function in 256, 512 and 1024 bit block sizes, - * based on the {@link ThreefishEngine Threefish} tweakable block cipher. - * <p> - * This is the 1.3 version of Skein defined in the Skein hash function submission to the NIST SHA-3 - * competition in October 2010. - * <p> - * Skein was designed by Niels Ferguson - Stefan Lucks - Bruce Schneier - Doug Whiting - Mihir - * Bellare - Tadayoshi Kohno - Jon Callas - Jesse Walker. - * - * @see SkeinEngine - * @see SkeinParameters - */ -public class SkeinDigest - implements ExtendedDigest, Memoable -{ - /** - * 256 bit block size - Skein-256 - */ - public static final int SKEIN_256 = SkeinEngine.SKEIN_256; - /** - * 512 bit block size - Skein-512 - */ - public static final int SKEIN_512 = SkeinEngine.SKEIN_512; - /** - * 1024 bit block size - Skein-1024 - */ - public static final int SKEIN_1024 = SkeinEngine.SKEIN_1024; - - private SkeinEngine engine; - - /** - * Constructs a Skein digest with an internal state size and output size. - * - * @param stateSizeBits the internal state size in bits - one of {@link #SKEIN_256}, {@link #SKEIN_512} or - * {@link #SKEIN_1024}. - * @param digestSizeBits the output/digest size to produce in bits, which must be an integral number of - * bytes. - */ - public SkeinDigest(int stateSizeBits, int digestSizeBits) - { - this.engine = new SkeinEngine(stateSizeBits, digestSizeBits); - init(null); - } - - public SkeinDigest(SkeinDigest digest) - { - this.engine = new SkeinEngine(digest.engine); - } - - public void reset(Memoable other) - { - SkeinDigest d = (SkeinDigest)other; - engine.reset(d.engine); - } - - public Memoable copy() - { - return new SkeinDigest(this); - } - - public String getAlgorithmName() - { - return "Skein-" + (engine.getBlockSize() * 8) + "-" + (engine.getOutputSize() * 8); - } - - public int getDigestSize() - { - return engine.getOutputSize(); - } - - public int getByteLength() - { - return engine.getBlockSize(); - } - - /** - * Optionally initialises the Skein digest with the provided parameters.<br> - * See {@link SkeinParameters} for details on the parameterisation of the Skein hash function. - * - * @param params the parameters to apply to this engine, or <code>null</code> to use no parameters. - */ - public void init(SkeinParameters params) - { - engine.init(params); - } - - public void reset() - { - engine.reset(); - } - - public void update(byte in) - { - engine.update(in); - } - - public void update(byte[] in, int inOff, int len) - { - engine.update(in, inOff, len); - } - - public int doFinal(byte[] out, int outOff) - { - return engine.doFinal(out, outOff); - } - -} |