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Shamir门限算法的C++实现，依赖于NTL开源代码库(Shamir threshold algorithm C++ implementation, relies on NTL open source code base)

pdf文件加密移除小软件。使pdf文件可打印可注释。(To remove pdf file encryption. So files can be printed comments)

PHP5.2 5.3 5.4等 zend加密代码解密(PHP5.2 5.3 5.4 Zend encryption code decryption)

一个实现DES加解密算法的小程序，编程实现DES算法的加密过程、脱密过程和16个内部密钥生成过程(An implementation of DES encryption and decryption algorithm applet, programming encryption algorithm DES implementation process, from secret process and the 16 internal key generation process)

自己动手写加壳程序，按照文档一步一步来，做你自己的加壳程序！(Packers to write himself, according to the document step by step, do your own packers!)

基于国密算法SM3实现HMAC，输入密钥和消息，可产生HASH验证码，C环境下调试成功(Based on the countries close algorithm realization SM3 HMAC, input key and news, can produce HASH verification code, C environment debugging success)

文件加密器,实现对文件加密,用来学习的代码(File encryption, encrypting files, the code used to study)

凯撒密码作为一种最为古老的对称加密体制，在古罗马的时候都已经很流行，他的基本思想是：通过把字母移动一定的位数来实现加密和解密。例如，如果密匙是把明文字母的位数向后移动三位，那么明文字母B就变成了密文的E，依次类推，X将变成A，Y变成B，Z变成C，由此可见，位数就是凯撒密码加密和解密的密钥。个人原创。(Caesar password as one of the most ancient symmetric encryption system in ancient Rome have been very popular, his basic idea is: by the letters move a certain number of bits to achieve encryption and decryption. For example, if the key is the number of bits of plaintext letters backward move three, the plaintext letter B into a ciphertext E, and so on, X will become Y-become a B,, and Z becomes C Thus, the median is the Caesar cipher encryption and decryption keys. Personal originality.)

VC编写的简单DES加密程序，密钥由用户手动输入，可加密字符串(VC prepared by the simple DES encryption program, the key to manually input by the user)

仿射密码体制加解密，较移位代换等加解密体制，更加优越。(Affine cipher encryption and decryption, a shift substitution and encryption and decryption system, more superior.)