This program encodes and decodes a character using the Vigenere Square method

--- -----md5--- --- ---属于200种加密算法的一种------------ md5--------------- encryption algorithm 200 is a

文档加密驱动程序源

创建一个经过加密的软件系统信息文件，在软件启动时会校验这些信息，判断是授权用户在使用该软件。-create an encrypted document information system software, the software will start checking the information, and judgment is authorized users in the use of the software.

测试对字符串的MD4。运行环境：vs2008 （注意选择“多字符”编译）-Testing of the string MD4. Operating environment: vs2008 (attention to the selection " multi-character" compilation)

著名的解Unix密码的源程序 -The source for cracking unix password

 What is EAQUAL?     The intention of EAQUAL is to provide a objective quality measure for coded/ decoded audio      files. Currently the code is based on the ITU-R recommendation BS.1387.      EAQUAL will not supersede listening tests, but can be a useful tool to support listening tests,      categorize different coding algorithms and find bugs in algorithms. The more input files are      taken for the analysis, the better the results of EAQUAL will fit the reality.

vc环境下的pgp源码，pgp是目前很流行的一种加密算法，非常安全，正在发展中-vc environment of pgp source, pgp is a very popular encryption algorithm, very safe, developing

超级兔子有一个文件加密功能，文件被加密以后，打开该文件时，回转到控制面板，可是我们忘了密码怎么办呢？这里提供了一个简单方法-Super rabbit has a file encryption, file is encrypted then, open the file, back to the control panel, but we forget the password how to do? Here provides a simple way

多数程序设计语言处理整数的能力是有限的，如C语言中，int类型数据范围是-32767----32767。实际问题的处理过程中往往涉及大整数的运算，如RSA加密算法要求至少64bit的整数，本程序是设计算法实现大整数的加减运算。-majority programming language processing is integral to the limited capacity, such as C language, int data type is the scope-32767---- 32767. Practical problems of the treatment process often involves large integer arithmetic, such as the RSA encryption algorithm requires at least 64-bit integers, the procedure is designed algorithm large integer addition and subtraction operations.

密码编码学――加密方法的C与C++实现，该程序最好在VC环境下编译-cryptographers-- encryption methods of C and C to achieve the best procedures in the VC environment compiler