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RC4 加密解密
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RC4 加密解密. RC4 加密算法是大名鼎鼎的 RSA 三人组中的头号人物 Ron Rivest 在 1987 年设计的密钥长度可变的流加密算法簇。之所以称其为簇,是由于其核心部分的 S-box 长度可为任意,但一般为 256 字节。该算法的速度可以达到 DES 加密的 10 倍左右。. RC4 加密解密原理. RC4 是一个可变密钥长度,面向字节操作的序列密码 RC4 有 2 个主要的算法:密钥调度算法 KSA 和伪随机数生成算法 PRGA RC4 通过 PRGA 得到密钥流,得到的密钥流 sub_k 用以和明文进行 xor 运算,得到密文 解密过程和加密过程完全相同.
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RC4 加密解密
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