this visual basic source code,perhaps usefull 4 you

DES加密算法实例1-DES encryption algorithm examples of a

MISTY 加密算法 二进制兼容的加密算法,加密匙可到128位-MISTY binary compatible encryption algorithm encryption algorithms, encryption keys can be 128

椭圆曲线公钥密码算法,可用于加密和数字签名等应用，该版本算法是有限域GF（2^n）上的算法-Elliptic curve public key cryptography algorithms can be used for encryption and digital signature applications, the version of the algorithm is a finite field GF (2 ^ n) the algorithm

实现移位密码（扩展凯撒密码），用键盘接收明文和密钥，屏幕打印密文。-Achieve translocation password (Extension Caesar password), use the keyboard to receive explicit and key, screen printing ciphertext.

用C++实现的维吉尼亚密码源程序,已经在DevC++上测试过，大家可以再进行功能完善-With C++ Achievable Virginia password source, has been DevC++ Tested, we can further improve the function

非常简单却实用的一款通讯簿,主要特色是支持密码保护功能,可以实现联系人信息的保密.-very simple but practical one Address Book, the main feature is support password protection function, Contact information can achieve confidentiality.

基于VC++6.0的DES加密算法 .-VC++6.0 based on the DES encryption algorithm .

一个完整的des演示程序 ，在linux下编译通过-Des a complete demonstration of the procedures adopted in the compiler under linux

base64的解码Ｃ语言实现-base64 decoding C Language

RC2算法源代码-RC2 algorithm source code