kz.gamma.hash
Class GOST3411Digest

java.lang.Object
  kz.gamma.hash.GOST3411Digest

public class GOST3411Digest
extends java.lang.Object

implementation of GOST R 34.11-94

Field Summary

(package private) byte[]	a
private long	byteCount
private byte[][]	C
private static byte[]	C2 reset the chaining variables to the IV values.
private GOST28147Engine	cipher
private static int	DIGEST_LENGTH
private byte[]	H
private byte[]	K
private byte[]	L
private byte[]	M
(package private) byte[]	S
private byte[]	Sum
(package private) byte[]	U
(package private) byte[]	V
(package private) byte[]	W
(package private) short[]	w_S
(package private) short[]	wS
private byte[]	xBuf
private int	xBufOff

Constructor Summary

GOST3411Digest()
Standard constructor

GOST3411Digest(GOST3411Digest t)
Copy constructor.

GOST3411Digest(java.lang.String sBoxName)
Constructor with option to choose initialization vector

Method Summary

private byte[]	A(byte[] in)
private void	cpyBytesToShort(byte[] S, short[] wS)
private void	cpyShortToBytes(short[] wS, byte[] S)
int	doFinal(byte[] out, int outOff)
private void	E(byte[] key, byte[] s, int sOff, byte[] in, int inOff)
private void	finish()
private void	fw(byte[] in)
java.lang.String	getAlgorithmName()
int	getByteLength()
int	getDigestSize()
private void	LongToBytes(long r, byte[] out, int outOff)
private byte[]	P(byte[] in)
protected void	processBlock(byte[] in, int inOff)
void	reset()
private void	sumByteArray(byte[] in)
void	update(byte in)
void	update(byte[] in, int inOff, int len)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DIGEST_LENGTH

private static final int DIGEST_LENGTH

See Also:

Constant Field Values

H

private byte[] H

L

private byte[] L

M

private byte[] M

Sum

private byte[] Sum

C

private byte[][] C

xBuf

private byte[] xBuf

xBufOff

private int xBufOff

byteCount

private long byteCount

cipher

private GOST28147Engine cipher

K

private byte[] K

a

byte[] a

wS

short[] wS

w_S

short[] w_S

S

byte[] S

U

byte[] U

V

byte[] V

W

byte[] W

C2

private static final byte[] C2

reset the chaining variables to the IV values.

Constructor Detail

GOST3411Digest

public GOST3411Digest()

Standard constructor

GOST3411Digest

public GOST3411Digest(java.lang.String sBoxName)

Constructor with option to choose initialization vector

GOST3411Digest

public GOST3411Digest(GOST3411Digest t)

Copy constructor. This will copy the state of the provided message digest.

Method Detail

getAlgorithmName

public java.lang.String getAlgorithmName()

getDigestSize

public int getDigestSize()

update

public void update(byte in)

update

public void update(byte[] in,
                   int inOff,
                   int len)

P

private byte[] P(byte[] in)

A

private byte[] A(byte[] in)

E

private void E(byte[] key,
               byte[] s,
               int sOff,
               byte[] in,
               int inOff)

fw

private void fw(byte[] in)

processBlock

protected void processBlock(byte[] in,
                            int inOff)

finish

private void finish()

doFinal

public int doFinal(byte[] out,
                   int outOff)

reset

public void reset()

sumByteArray

private void sumByteArray(byte[] in)

LongToBytes

private void LongToBytes(long r,
                         byte[] out,
                         int outOff)

cpyBytesToShort

private void cpyBytesToShort(byte[] S,
                             short[] wS)

cpyShortToBytes

private void cpyShortToBytes(short[] wS,
                             byte[] S)

getByteLength

public int getByteLength()