这是关于DES加密算法的C / C++实现的一个例子

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.

一个伪随机数生成程序，简单实用，有需要的请下载-A pseudo-random number generator, if necessary, please download the

详细介绍了C函数。

PIC汇编实现SHA加密算法。在PIC16F73上实现-SHA ALGORITHM BY PIC assembly language

DCPcrypt Cryptographic Component Library

CRC-16算法的C语言实现（以常见的CRC-ITU为例引出的比特型算法）。-CRC-16 algorithm of the C language (in common CRC-ITU as an example of bit-based algorithm for extraction).

Documents and SettingsAdministrator桌面MD5.rar-Documents and Settings Administrator Desktop MD5.rar

DES 加密系统的 C 语言源代码-DES encryption system in C language source code

数据库安全至关重要，尤其是Access数据库，由于其加密算法过于简单，使得Access单靠密码无法保证其安全，本代码通过改变数据库头文件实现对Acess数据库的加密。-Database security is crucial, especially the Access database, because of its too simple encryption algorithm, making Access a password alone can not guarantee their safety, the code by changing the header file database achieve Acess database encryption.

最流行的vb程序反编译软件-most popular procedures vb-building software