产生共享软件加密序列号的程序

用VB做万象密码查询工具，这里用到几个常用的API函数：FindWindow，SendMessage，GetClassName，WindowFromPoint-Vientiane password to use VB to do query tool, used here in several commonly used API functions: FindWindow, SendMessage, GetClassName, WindowFromPoint

基于RSA的数字签名实现，用VC++模拟实现RSA数字签名过程。-RSA-based digital signature implementation, using VC++ simulation of the process of realization of RSA digital signature.

RSA公钥加密，用C实现，大家可以参考一下-RSA public key encryption, using C to achieve, we can refer to

基于8位密码，每位密码值范围为5秒，连续三次键入错误报警1秒的开锁提示音；(5)密码设定完毕后有5秒内未进入，自动锁闭。LED输出模块，数码管（

md5的加密函数 iis下运行； 用法: 1：页面包含该文件 2：调用方法MD5(sMessage,stype) 例dim md_=md5("admin"，32) *注：最高32位。-md5 encryption function running under iis Usage: 1: page 2 of the document contains: call method MD5 (sMessage, stype) were dim md_ = md5 ( " admin" , 32)* Note: maximum 32.

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

Introduction to Cryptography in plain simple english. The document talks about the early day cryptography and gives some simple examples to the readers.

MD5简单版的杂凑函数；使用C++语言编写-MD5 Hash Function

用C语言写的100行DES加密算法，学习C语言和密码算法的好例程。-C language written in 100 lines DES encryption algorithm, C language learning algorithm and password good routines.

它也可以用来解除Adobe Acrobat PDF文件密码的工具，它可以帮助解决加密PDF无法编辑和复制/打印的问题，支持所有版本的Acrobat加密(包含7.x)，也支持128位加密。 -It also can be used to lift the Adobe Acrobat PDF files password tool, it can help to solve encrypted PDF can not edit and copy/print the questions, and support all versions of Acrobat encryption (including 7.x), also supports 128-bit encryption.