org.aoju.bus.crypto.digest.mac

Class BCHMacEngine

java.lang.Object

org.aoju.bus.crypto.digest.mac.BCHMacEngine

All Implemented Interfaces:

MacEngine

public class BCHMacEngine
extends Object
implements MacEngine

BouncyCastle的HMAC算法实现引擎，使用Mac 实现摘要 当引入BouncyCastle库时自动使用其作为Provider

Since:

JDK 1.8+

Version:

5.8.9

Author:

Kimi Liu

Constructor Summary

Constructors

Constructor and Description
BCHMacEngine(org.bouncycastle.crypto.Digest digest, byte[] key) 构造
BCHMacEngine(org.bouncycastle.crypto.Digest digest, org.bouncycastle.crypto.CipherParameters params) 构造

Method Summary

Modifier and Type	Method and Description
byte[]	digest(InputStream data, int bufferLength) 生成摘要
String	getAlgorithm() 获取当前算法
org.bouncycastle.crypto.Mac	getMac() 获得 Mac
int	getMacLength() 获取MAC算法块大小
BCHMacEngine	init(org.bouncycastle.crypto.Digest digest, org.bouncycastle.crypto.CipherParameters params) 初始化

Methods inherited from class java.lang.Object

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

Constructor Detail

BCHMacEngine

public BCHMacEngine(org.bouncycastle.crypto.Digest digest,
                    byte[] key)

构造

Parameters:

digest - 摘要算法，为Digest 的接口实现

key - 密钥

BCHMacEngine

public BCHMacEngine(org.bouncycastle.crypto.Digest digest,
                    org.bouncycastle.crypto.CipherParameters params)

构造

Parameters:

digest - 摘要算法

params - 参数，例如密钥可以用KeyParameter

Method Detail

init

public BCHMacEngine init(org.bouncycastle.crypto.Digest digest,
                         org.bouncycastle.crypto.CipherParameters params)

初始化

Parameters:

digest - 摘要算法

params - 参数，例如密钥可以用KeyParameter

Returns:

this

digest

public byte[] digest(InputStream data,
                     int bufferLength)

Description copied from interface: MacEngine

生成摘要

Specified by:

digest in interface MacEngine

Parameters:

data - InputStream 数据流

bufferLength - 缓存长度，不足1使用 IoUtils.DEFAULT_BUFFER_SIZE 做为默认值

Returns:

摘要bytes

getMac

public org.bouncycastle.crypto.Mac getMac()

获得 Mac

Returns:

Mac

getMacLength

public int getMacLength()

Description copied from interface: MacEngine

获取MAC算法块大小

Specified by:

getMacLength in interface MacEngine

Returns:

MAC算法块大小

getAlgorithm

public String getAlgorithm()

Description copied from interface: MacEngine

获取当前算法

Specified by:

getAlgorithm in interface MacEngine

Returns:

算法