算术运算实现字母的替换。凯撒加密就是一种单字母替换法：通过用户给出密钥将字母加上密码变成密文...

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

access数据库加密有几法，但用“设置安全机智向导”加密最为牢靠，又如何访问这样的数据库呢-access database encryption with a few laws, but "to provide a safety witty guide" the most secure encryption, how to access such a database?

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椭圆曲线加密算法源代码，用VC＋＋编写，很好的东西-Elliptic curve encryption algorithm source code, using VC to prepare, good things

md5加密的bindshe-md5 encrypted bindshe

第三代移动系统中以Kasumi为内核的另一加密算法-f8算法的VC++实现-Third-generation mobile system to Kasumi for kernel-f8 encryption algorithm to another algorithm VC++ Realize

一个测试DES加密算法和测试程序-a test DES encryption algorithm and testing procedures

2的16次幂正整数d与n，编写计算d-1 (mod n) 的程序； 2、对于三个不超过2的16次幂正整数a、e与n，编写计算ae (mod n) 的程序。 在上述程序基础上写出下列程序： （1） 对给定的10000以内数判定其是否为素数； （2） 进行ElGamal体制的加密与签名。 -two of 16 power-positive integer d and n, calculate the preparation of d-1 (mod n); 2. For not more than 2 3 16 Powers positive integers a, e and n, calculate the preparation ae (mod n) procedures. In the above procedure to write on the basis of the following procedures : (a) the right to 10,000 within a few judging whether a prime number; (2) ElGamal encryption and signature.

Cryptmount是对Linux系统下的文件系统以及用户设备、文档等进行加密的系统.-Cryptmount of the Linux system and the file system of user equipment. Documents and other encryption systems.

一个由java语言编写的MD5加密算法的实现.-a java language from the MD5 encryption algorithm achieved.