org.openeuler

类 SM3

java.lang.Object

java.security.MessageDigestSpi

org.openeuler.SM3

所有已实现的接口:

Cloneable

public class SM3
extends MessageDigestSpi
implements Cloneable

字段概要

字段

限定符和类型	字段和说明
private static int	BLOCK_BYTE_SIZE
private byte[]	byteBuf
private int	byteBufOff
private long	byteCount
private static int	DIGEST_LENGTH
private static int[]	T
private int[]	V
private int[]	W

构造器概要

构造器

构造器和说明
SM3() Standard constructor
SM3(SM3 t) Copy constructor.

方法概要

限定符和类型	方法和说明
protected void	CF() Compression Function
Object	clone() Clone
protected byte[]	engineDigest()
int	engineGetDigestLength()
protected void	engineReset()
protected void	engineUpdate(byte input)
protected void	engineUpdate(byte[] input, int offset, int len)
private int	FF(int j, int x, int y, int z) Boolean function FFj(X;Y;Z) = X XOR Y XOR Z when 0 < = j < = 15 = (X AND Y) OR (X AND Z) OR (Y AND Z) when 16 < = j < = 63
private int	GG(int j, int x, int y, int z) Boolean function GGj(X;Y;Z) = X XOR Y XOR Z when 0 < = j < = 15 = (X AND Y) OR (NOT X AND Z) when 16 < = j < = 63
protected void	ME() Message Extension W[j] = B[i] when 0 < = j < = 15 W[j] = P1(W[j-16] XOR W[j-9] XOR (W[j-3] <<< 15)) XOR (W[j-13] <<< 7) XOR W[j-6] when 16 < = j < = 63 HINT: In order to optimize data storage, W' in the message extension will be directly calculated when it is used in the compression function.
private int	P0(int x) Permutation function
private int	P1(int x) Permutation function
protected void	padding(long bitLength) Padding

从类继承的方法 java.security.MessageDigestSpi

engineDigest, engineUpdate

从类继承的方法 java.lang.Object

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

字段详细资料

DIGEST_LENGTH

private static final int DIGEST_LENGTH

另请参阅:

常量字段值

BLOCK_BYTE_SIZE

private static final int BLOCK_BYTE_SIZE

另请参阅:

常量字段值

byteCount

private long byteCount

byteBuf

private final byte[] byteBuf

byteBufOff

private int byteBufOff

V

private final int[] V

W

private final int[] W

T

private static final int[] T

构造器详细资料

SM3

public SM3()

Standard constructor

SM3

public SM3(SM3 t)

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

方法详细资料

engineUpdate

protected void engineUpdate(byte input)

指定者:

engineUpdate 在类中 MessageDigestSpi

engineUpdate

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

指定者:

engineUpdate 在类中 MessageDigestSpi

engineDigest

protected byte[] engineDigest()

指定者:

engineDigest 在类中 MessageDigestSpi

engineReset

protected void engineReset()

指定者:

engineReset 在类中 MessageDigestSpi

engineGetDigestLength

public int engineGetDigestLength()

覆盖:

engineGetDigestLength 在类中 MessageDigestSpi

P0

private int P0(int x)

Permutation function

参数:

x - input number

返回:

P0(X) = X XOR (X <<< 9) XOR (X <<< 17)

P1

private int P1(int x)

Permutation function

参数:

x - input number

返回:

P1(X) = X XOR (X <<< 15) XOR (X <<< 23)

FF

private int FF(int j,
               int x,
               int y,
               int z)

Boolean function FFj(X;Y;Z) = X XOR Y XOR Z when 0 < = j < = 15 = (X AND Y) OR (X AND Z) OR (Y AND Z) when 16 < = j < = 63

参数:

j - function index

x - X

y - Y

z - X

返回:

FFj(x, y, z)

GG

private int GG(int j,
               int x,
               int y,
               int z)

Boolean function GGj(X;Y;Z) = X XOR Y XOR Z when 0 < = j < = 15 = (X AND Y) OR (NOT X AND Z) when 16 < = j < = 63

参数:

j - function index

x - X

y - Y

z - Z

返回:

GGj(x, y, z)

ME

protected void ME()

Message Extension W[j] = B[i] when 0 < = j < = 15 W[j] = P1(W[j-16] XOR W[j-9] XOR (W[j-3] <<< 15)) XOR (W[j-13] <<< 7) XOR W[j-6] when 16 < = j < = 63 HINT: In order to optimize data storage, W' in the message extension will be directly calculated when it is used in the compression function.

CF

protected void CF()

Compression Function

padding

protected void padding(long bitLength)

Padding

参数:

bitLength - bit length of message length

clone

public Object clone()
             throws CloneNotSupportedException

Clone

覆盖:

clone 在类中 MessageDigestSpi

返回:

SM3 class

抛出:

CloneNotSupportedException