hundun

一个周期3的多表代替密码，第1个表由密钥字法产生（密钥字自拟），第2个表由洗牌法产生（注意，字母a~z与数字0~25一一对应），第三个表由公式法产生（数学公式自拟，注意它须是Z26上的一个一一变换）-a cycle of three multi-table instead of passwords, a table by key word method, (key word from the intended), Table No. 2 produced by shuffling method (note, a letter with a number of z ~ 0 ~ 25 he gathers), 3rd tables generated by the formula (from the proposed mathematical formula, it should pay attention to the Z26 is a transformation on January 1)

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.

md5的vb源代码

RegistTimes RegistDays时间限制控制控件。(有源代码）工作在：D2 D3 D4 D5。作者：Mats Asplund。-RegistTimes RegistDays controls time limit control. (Source code) in: D2 D3 D4 D5. Author: Mats Asplund.

UPX1.9源代码(一个加壳工具)-UPX1.9 source code (a shell tools )

基于双缓冲过滤驱动的透明加密系统研究与实现(Based on double buffer transparent encryption system filter driver and Implementation Research)

数字水印，用MATLAB制作的，还有一些叙述情况-Digital Watermarking using MATLAB produced, and some described the situation

基于ATSHA204的加密技术 ，保密性好，破解成本高，在传输线上没有密匙(ATSHA204 based encryption technology, security and good, high cost break in the transmission line is no key)

C#程序来实现生成多项式的循环冗余校验,通过修改能校验多项式-C# program to implement the cyclic redundancy check generator polynomial, by modifying the polynomial can check

说明：  一个彩色视频加密程序，可以实现对彩色视频的加密解密。(A color video encryption program can realize the encryption and decryption of color video.)