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DES加密算法的实现和演示，具体算法见网上，程序中有注释-DES encryption algorithm and demonstrate the achievement of the specific algorithm see online, proceedings have Notes

DSA算法的Pascal实现和例子。实现了签名和确认-DSA algorithm Pascal realization and example. Realized has signed and confirmed

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有关欧几里德的扩展算法，非常实用，经测试好用- The expansion of the Euclidean algorithm, is very practical, easy to use as test

汇编内核的MD5算法C源码,核心运算部分采用汇编语言编写，执行高效。VC++环境开发，由于直接在C代码中直接嵌入汇编，因此可无须另外设置，可直接使用。

大素数生成算法的实现，很不错的一段程序-large prime number generation algorithm to achieve a very good procedures

用c++实现仿射密码，我是在DevC++中跑的，应该在VisualC++中也行-With c++ Achieve affine password, I was DevC++ In running, it should be in VisualC++ Also line

rsa encryption which ask a user input must me be uppercase letter-rsa encryption which ask a user input must me be uppercase letter..

MD消息摘要程序，MD5以512位分组来处理输入的信息，且每一分组又被划分为16个32位子分组，经过了一系列的处理后，算法的输出由四个32位分组组成，将这四个32位分组级联后将生成一个128位散列值。-MD news summary procedures, MD5 to 512 groups to deal with the importation of information and each group was divided into 16 groups of 32 seats, after a series of processing, the output from the algorithm four groups composed of 32, these four sub-32 will generate a cascade 128 the hash value.