This file contains a C++Builder 4 project called SimplyChaos-X ver 3.1 (SCX31). SCX31 is an encryption tool. I designed it as my graduation paper work. SCX31 is a symmetric stream cipher built on chaos function, one time pad cipher and inspirati

**函数: DesDecString **目的: 解密给定长度的串 **参数: sKey 密钥串. 一般为8个字节长(实际解密时只用其前8个字节) ** nKeyLen 密钥长度. 如果密钥为字符串(以 \0 结尾)，值可为0 ** 如果密钥不足8个字节, 密钥串后面不足的字节以 \0 填充 ** sSrc 解密前的串. 为8个倍数字节长 ** nSrcLen 解密前的串长度. 该串长度必须为8的倍数个字节 ** sDest 存放解密后的串. 为nSrcLen字节长

A5 is a stream cipher. A5 is based on a combination of three linear feedback shift registers (LFSRs) with irregular clocking. It uses 64 bit keys. The register lengths are 19, 22, and 23. All the feedback polynomials are sparse. The output is the XOR