Package org.wildfly.security.digest

Class SHA512_256MessageDigest

java.lang.Object

java.security.MessageDigestSpi

org.wildfly.security.digest.SHA512_256MessageDigest

public class SHA512_256MessageDigest
extends MessageDigestSpi

SHA-512/256 hashing implementation as defined in FIPS PUB 180-4 Secure Hash Standard

Field Summary

Fields

Modifier and Type	Field	Description
private byte[]	block
private static int	BLOCK_SIZE
private int	bytesLoaded
private long[]	H
private static long[]	K
private long	messageLength
private byte[]	tempByte
private long[]	W

Constructor Summary

Constructors

Constructor	Description
SHA512_256MessageDigest()

Method Summary

Modifier and Type	Method	Description
private static long	ch(long e, long f, long g)
protected byte[]	engineDigest()
protected void	engineReset()
protected void	engineUpdate(byte input)
protected void	engineUpdate(byte[] input, int offset, int len)
private static long	maj(long a, long b, long c)
private void	processBlock()
protected static void	resetH(long[] H)
protected byte[]	resultFromH(long[] H)
private static long	rotr(long x, int bits)
private static long	sigma0(long a)
private static long	sigma1(long e)

Methods inherited from class java.security.MessageDigestSpi

clone, engineDigest, engineGetDigestLength, engineUpdate

Methods inherited from class java.lang.Object

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

Field Detail

K

private static final long[] K

BLOCK_SIZE

private static final int BLOCK_SIZE

See Also:

Constant Field Values

tempByte

private final byte[] tempByte

H

private final long[] H

W

private final long[] W

block

private final byte[] block

messageLength

private long messageLength

bytesLoaded

private int bytesLoaded

Constructor Detail

SHA512_256MessageDigest

public SHA512_256MessageDigest()

Method Detail

engineReset

protected void engineReset()

Specified by:

engineReset in class MessageDigestSpi

resetH

protected static void resetH(long[] H)

resultFromH

protected byte[] resultFromH(long[] H)

engineUpdate

protected void engineUpdate(byte input)

Specified by:

engineUpdate in class MessageDigestSpi

engineUpdate

protected void engineUpdate(byte[] input,
                            int offset,
                            int len)

Specified by:

engineUpdate in class MessageDigestSpi

engineDigest

protected byte[] engineDigest()

Specified by:

engineDigest in class MessageDigestSpi

processBlock

private void processBlock()

sigma0

private static long sigma0(long a)

sigma1

private static long sigma1(long e)

ch

private static long ch(long e,
                       long f,
                       long g)

maj

private static long maj(long a,
                        long b,
                        long c)

rotr

private static long rotr(long x,
                         int bits)