算术运算实现字母的替换。凯撒加密就是一种单字母替换法：通过用户给出密钥将字母加上密码变成密文...

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

这个是MD5算法C的源代码，希望对大家有用-This is the MD5 algorithm C source code, in the hope that useful to everybody

C++实现的椭圆曲线算法。已经写成一个库文件只要调用就行了-C++ Realized elliptic curve algorithm. Has been written in a library file as long as the call on the list

MD5计算,可以将文件提取出摘要，进行比对，校验，实现指纹算法-MD5, can be extracted document summaries, compare and testing to achieve fingerprint algorithm

Openssl的SSL证书认证程序，也是用VC写的。已通过测试。-Openssl SSL certificate authentication procedures, as well as with VC writes. Have passed the tests.

椭圆曲线密码C实现的，可以在++6.0下编译通过。希望对大家有帮助！-Elliptic Curve Cryptography C achieved in++ 6.0 compiler passed under. Would like to help everyone!

循环异或-XOR cycle

RC2算法源代码-RC2 algorithm source code

安全文件柜,使用CryptApi接口实现.-Security file cabinet, the use of CryptApi interface.

应用背景此库是C语言编写的MD5加密源代码，包含MD5.c,MD5.h,简介txt文件MD5.txt及一个测试代码testmd5.c.代码在ubuntu12.04服务器版本成功测试通过。关键技术Message Digest Algorithm MD5（中文名为消息摘要算法第五版）为计算机安全领域广泛使用的一种散列函数，用以提供消息的完整性保护。该算法的文件号为RFC 1321（R.Rivest,MIT Laboratory for Computer Science and RSA Data Security Inc. April 1992）。