大数计算器，有加减乘乘方求余求逆 可用于密码学的课程设计。...

Motivation - A simple DES core  - Fast and Small Version  - Open Source Compatibility I believe that the core complies to NIST-800-17. However, there has been no formal third party verification. The official NIST specification can be downloaded here: 800-17.pdf. For the Triple DES, the NIST reference is located here: 

md5算法的java实现-md5 algorithm java realizes

数据库安全至关重要，尤其是Access数据库，由于其加密算法过于简单，使得Access单靠密码无法保证其安全，本代码通过改变数据库头文件实现对Acess数据库的加密。-Database security is crucial, especially the Access database, because of its too simple encryption algorithm, making Access a password alone can not guarantee their safety, the code by changing the header file database achieve Acess database encryption.

Java Cryptography and source code

一个可以实际编译运行的 MD5算法原代码，含main调试程序。-A MD5 Source Code which can be run after translation and edition. It contains main debug program.

welfare lottery 3D, projections, the software has shrunk. Is their half-year effort, delphi development, it is entirely possible commercialization of the software (value 10,000), Now it dedicated to the PUDN.com

基于VC6的MD5加密源码,短小精干，利于交流学习。-MD5 encryption source code, the short crack, and conducive to the exchange of learning.

各种反分析软件的手法,包括(反Dede,反单步跟踪,反SoftICE,Ollydbg,反静态分析,以及程序自身的CRC32效验等,对于初学者有很大的帮助.-Analysis of various anti-software approach, including the (Anti-Dede, anti-single-step tracking, anti-SoftICE, Ollydbg, anti-static analysis, as well as procedures for their own well-tested, such as CRC32, for beginners and has a great help.

共享软件加密算法库v2.0 (C++)-sharing software encryption algorithm library v2.0 (C)

SHA-1加密算法-SHA-1 encryption algorithm