this is about cryptography. takes text as input and decrypt it and then aagin...

用c++实现仿射密码，我是在DevC++中跑的，应该在VisualC++中也行-With c++ Achieve affine password, I was DevC++ In running, it should be in VisualC++ Also line

JAVA的加密源程序，DES等加密算法-JAVA encryption source, such as DES encryption algorithm

DES算法全称为Data Encryption Standard,即数据加密算法,DES算法把64位的明文输入块变为64位的密文输出块,它所使用的密钥也是64位。RSA的安全性依赖于大数分解。公钥和私钥都是两个大素数（ 大于 100个十进制位）的函数。本程序为适合初学者的rsa算法java源码及des源码，开发环境eclipse3.4-DES algorithm called the Data Encryption Standard, that is, data encryption algorithm, DES algorithm to express the 64-bit input block into a 64-bit output ciphertext block, it is also used 64-bit key. RSA" s security depends on the decomposition of large numbers. Public key and private key are two large prime numbers (more than 100 decimal places) of the function. This procedure is suitable for beginners of rsa algorithm java source and des-source, development environment eclipse3.4

代码详细的将DES算法的加密过程描述详细，通过MFC进行界面化操作，整体界面良好，具有很强的可读性和很好的独立性，突出了C++的封装型和继承性的有点，值得参考。。。。。。。。。。。。。。。。

利用替换算法的加密算法!-use replacement algorithm encryption algorithm!

visual basic agai-visual basic againnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn

RSA加密算法的实现 2^1024大的素数实现-implement the RSA

CRC校验中叠加和校验方法的生成，校验等功能函数源码。-CRC verification and validation methods of superposition generation, calibration source, such as performance function.

LZW算法基于转换串表(字典)T,将输入字符串映射成定长(通常为12位)的码字-LZW algorithm is based on converting Series (dictionary) T, the input string mapping into fixed-length (usually 12) the code word

一个比较简单的加密程序-a relatively simple encryption program