org.openeuler.sm4

类 GMacUtil

java.lang.Object

org.openeuler.sm4.GMacUtil

public class GMacUtil
extends Object

tools of GCM mode

字段概要

字段

限定符和类型	字段和说明
private static SM4Util	sm4

构造器概要

构造器

构造器和说明
GMacUtil()

方法概要

限定符和类型	方法和说明
static byte[]	getCounter0(byte[] iv, byte[] H) calculate CTR0 according to iv
static byte[]	GHASH(byte[] x, byte[] H) GHASH function refer to: nistspecialpublication800-38d
static byte[]	moveRightOneBit(byte[] input) shifts the 16-byte byte array one bit to the right
static byte[]	mult(byte[] x, byte[] y) Multiplication Operation on Blocks refer to: nistspecialpublication800-38d

从类继承的方法 java.lang.Object

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

字段详细资料

sm4

private static SM4Util sm4

构造器详细资料

GMacUtil

public GMacUtil()

方法详细资料

getCounter0

public static byte[] getCounter0(byte[] iv,
                                 byte[] H)

calculate CTR0 according to iv

参数:

iv - iv

H - The result of encrypting the all-zero input

返回:

CTR0

GHASH

public static byte[] GHASH(byte[] x,
                           byte[] H)

GHASH function refer to: nistspecialpublication800-38d

参数:

x -

H -

返回:

mult

public static byte[] mult(byte[] x,
                          byte[] y)

Multiplication Operation on Blocks refer to: nistspecialpublication800-38d

参数:

x -

y -

返回:

moveRightOneBit

public static byte[] moveRightOneBit(byte[] input)

shifts the 16-byte byte array one bit to the right

参数:

input -

返回: