MD52006-7-18

SPN代换-置换算法的c实现，以及使用差分分析进行破解。(SPN substitution- replacement algorithm c implementation, and use of differential analysis to crack.)

crystal bit 3821 library and algorithm

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)

ROCKEY4ND加密锁硬复制程序(Rockey4 Rockey4 Smart Rockey4 ND) (Rockey4 Rockey4 Smart Rockey4ND clone) )

说明：  RSA公开密钥算法C源代码，包括源代码、文档、安装程序、TEST程序以及分别在WINDOWS和UNIX_LINUX下的编译SCRIP，值得下载(RSA public key algorithm C source code, including source code, documentation, installation procedures, TEST procedures, as well as in Windows and the compiler UNIX_LINUX SCRIP, it is worth the download)

给linux的shell脚本加密(ZT).rar-to the shell script encryption (ZT). Rar

用Visual c++实现数字图像迭代混沌加密(Using Visual c++ Realize digital image iterative chaotic encryption)

此算法是用VC++编译的，用RSA算法对任何文件加密，简单易懂。-This algorithm is used VC++ Compiled using RSA algorithm to encrypt any document, easy-to-read.

用VB实现的DES加密算法，适合于小型VPN的明文加密传输-the DES encryption algorithm, suited to the small expressly VPN encryption transmission

cox方法展频水印matlab源码，对bitmap图像隐藏信息-frequency watermarking method Show Matlab source of bitmap images for hidden messages