I found five des algorithm.

简单的加密源程序-simple encryption source

AES算法主要包括三个方面：轮变化、轮数和密钥扩展。本文以128为例，介绍算法的基本原理；结合C语言，实现高级数据加密算法AES（AES-128）。-AES algorithm mainly includes three aspects: round of changes, round number and key expansion. In this paper, 128 for example, introduce the basic principles of algorithm combination of C language, the realization of advanced data encryption algorithm AES (AES-128).

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MESS 1.07 加密壳源程序-MESS 1.07 encryptions shells source program

VPN拨号程序源码(from sourceforge.net)-VPN digit dialing procedure source code (from sourceforge.net)

大整数运算的实现-large integer arithmetic Implementation

一本介绍密码学现代知识的学习资料，对于密码算法编程方面很有用。-A description of the study of modern knowledge of cryptography information programming for the cryptographic algorithm is useful.

3des 加密,可以进行3des,des等其他基本加密算法-3des

包括 LIB、DLL 加密模块 各种语言调用加密模块的例子程序等-including LIB, DLL encryption modules in various languages called encryption module examples procedures

RSA实现数字签名算法 VC++实现，有图形化窗口-Digital Signature Algorithm to RSA