org.aoju.bus.crypto.asymmetric

Class SM2Engine

java.lang.Object

org.aoju.bus.crypto.asymmetric.SM2Engine

public class SM2Engine
extends Object

SM2加密解密引擎，来自Bouncy Castle库的SM2Engine类改造
SM2加密后的数据格式为（两种模式）：

 curve(C1) | data(C2) | digest(C3)
 curve(C1) | digest(C3) | data(C2)
 

Since:

JDK 1.8

Version:

3.6.2

Author:

Kimi Liu

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SM2Engine.SM2Mode SM2算法模式 在SM2算法中，C1C2C3为旧标准模式，C1C3C2为新标准模式

Constructor Summary

Constructors

Constructor and Description
SM2Engine() 构造
SM2Engine(org.bouncycastle.crypto.Digest digest) 构造
SM2Engine(org.bouncycastle.crypto.Digest digest, SM2Engine.SM2Mode mode) 构造
SM2Engine(SM2Engine.SM2Mode mode) 构造

Method Summary

Modifier and Type	Method and Description
protected org.bouncycastle.math.ec.ECMultiplier	createBasePointMultiplier()
void	init(boolean forEncryption, org.bouncycastle.crypto.CipherParameters param) 初始化引擎
byte[]	processBlock(byte[] in, int inOff, int inLen) 处理块，包括加密和解密
SM2Engine	setMode(SM2Engine.SM2Mode mode) 设置加密类型

Methods inherited from class java.lang.Object

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

Constructor Detail

SM2Engine

public SM2Engine()

构造

SM2Engine

public SM2Engine(SM2Engine.SM2Mode mode)

构造

Parameters:

mode - SM2密钥生成模式，可选C1C2C3和C1C3C2

SM2Engine

public SM2Engine(org.bouncycastle.crypto.Digest digest)

构造

Parameters:

digest - 摘要算法啊

SM2Engine

public SM2Engine(org.bouncycastle.crypto.Digest digest,
                 SM2Engine.SM2Mode mode)

构造

Parameters:

digest - 摘要算法啊

mode - SM2密钥生成模式，可选C1C2C3和C1C3C2

Method Detail

init

public void init(boolean forEncryption,
                 org.bouncycastle.crypto.CipherParameters param)

初始化引擎

Parameters:

forEncryption - 是否为加密模式

param - CipherParameters，此处应为ParametersWithRandom（加密时）或ECKeyParameters（解密时）

processBlock

public byte[] processBlock(byte[] in,
                           int inOff,
                           int inLen)

处理块，包括加密和解密

Parameters:

in - 数据

inOff - 数据开始位置

inLen - 数据长度

Returns:

结果

setMode

public SM2Engine setMode(SM2Engine.SM2Mode mode)

设置加密类型

Parameters:

mode - SM2Engine.SM2Mode

Returns:

this

createBasePointMultiplier

protected org.bouncycastle.math.ec.ECMultiplier createBasePointMultiplier()