本代码实现一个保留加密方案（计划）。

一个实现文件加密的源码- A realization document encryption source code

rijndael算法在vc源码-vc FOSS

aes加密算法。用delphi语言实现。位数为128。-Aes encryption algorithm. Delphi use language. Median 128.

études and implementation ofaesin c

RC5 algorithm document

关于数字水印嵌入时处理水印的源代码，采用猫脸变换对水印图像进行预处理 -Be dealt with on the digital watermark embedding watermark source code, using a cat face on the watermark image pre-processing transformation

计算机安全的一本很好的书,其中有关安全密要等重要的内容,是一本不错的书-computer security,an introduction to computer security,you can learn much from it , a very good book

著名的解Unix密码的源程序 -The source for cracking unix password

不错的希尔代码，希尔是一种经典的加密算法，加密可以通过一线形变换，脱密再做依次逆变换。密钥就是变换矩阵本身。-good code Hill, Hill is a classic encryption algorithms, encryption can transform line shape, followed again from close inverse transform. Key is the transformation matrix itself.

LaoenED.com/LaoenED.exe for DOS/LaoenED.exe for Windos9x/2k/XP的密码查看器。很小但当你忘了密码的时候很实用！-LaoenED.com/LaoenED.exe for DOS/Windos9x/2k/XP LaoenED.exe for the user. A small, but when you forget the password are very practical!