org.aoju.bus.crypto.symmetric

Class RC4

java.lang.Object

org.aoju.bus.crypto.symmetric.RC4

public class RC4
extends Object

RC4加密解密算法实现

Since:

JDK 1.8

Version:

3.1.8

Author:

Kimi Liu

Constructor Summary

Constructors

Constructor and Description
RC4(String key) 构造

Method Summary

Modifier and Type	Method and Description
byte[]	crypt(byte[] msg) 加密或解密指定值，调用此方法前需初始化密钥
String	decrypt(byte[] message) 解密，使用默认编码UTF-8
String	decrypt(byte[] message, Charset charset) 解密
byte[]	encrypt(String message) 加密，使用默认编码：UTF-8
byte[]	encrypt(String message, Charset charset) 加密
void	setKey(String key) 设置密钥

Methods inherited from class java.lang.Object

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

Constructor Detail

RC4

public RC4(String key)
    throws org.aoju.bus.core.lang.exception.CommonException

构造

Parameters:

key - 密钥

Throws:

org.aoju.bus.core.lang.exception.CommonException - 异常

Method Detail

encrypt

public byte[] encrypt(String message,
                      Charset charset)
               throws org.aoju.bus.core.lang.exception.CommonException

加密

Parameters:

message - 消息

charset - 编码

Returns:

密文

Throws:

org.aoju.bus.core.lang.exception.CommonException - key长度小于5或者大于255抛出此异常

encrypt

public byte[] encrypt(String message)
               throws org.aoju.bus.core.lang.exception.CommonException

加密，使用默认编码：UTF-8

Parameters:

message - 消息

Returns:

密文

Throws:

org.aoju.bus.core.lang.exception.CommonException - key长度小于5或者大于255抛出此异常

decrypt

public String decrypt(byte[] message,
                      Charset charset)
               throws org.aoju.bus.core.lang.exception.CommonException

解密

Parameters:

message - 消息

charset - 编码

Returns:

明文

Throws:

org.aoju.bus.core.lang.exception.CommonException - key长度小于5或者大于255抛出此异常

decrypt

public String decrypt(byte[] message)
               throws org.aoju.bus.core.lang.exception.CommonException

解密，使用默认编码UTF-8

Parameters:

message - 消息

Returns:

明文

Throws:

org.aoju.bus.core.lang.exception.CommonException - key长度小于5或者大于255抛出此异常

crypt

public byte[] crypt(byte[] msg)

加密或解密指定值，调用此方法前需初始化密钥

Parameters:

msg - 要加密或解密的消息

Returns:

加密或解密后的值

setKey

public void setKey(String key)
            throws org.aoju.bus.core.lang.exception.CommonException

设置密钥

Parameters:

key - 密钥

Throws:

org.aoju.bus.core.lang.exception.CommonException - key长度小于5或者大于255抛出此异常