c++实现密钥为4的凯撒密码加密，其中支持明文的大小写

在各种安全机制中；

libGringotts是一个小型、易于使用的、完全线程的C语言库，最初为Gringotts开发。它的目的是将数据封闭在一个加密和压缩的文件中。它使用加密算法（(RIJNDAEL 128/256, SERPENT, TWOFISH, CAST256, SAFER+, LOKI97, 用于加密的3DES, 以及哈希函数的SHA1和 RIPEMD-160)来确保数据尽可能安全，并允许用户对所有使用的加密、哈希函数和压缩算法有完全的控制。 -libGringotts is small, is easy to use, the entire line regulation C language storehouse, at first is the Gringotts development. Its goal is the data seal in an encryption and in the compression document. It uses the encryption algorithm ((RIJNDAEL 12.8/256, million SERPENT, TWOFISH, CAST256, SAFER, LOKI97, uses in 3DES which encrypts, as well as Hasche function SHA1 and RIPEMD-160) guarantee the data to be as far as possible safe, and the permission user to all uses encryption, the Hasche function and the compression algorithm has the complete control.

C#的排序大全源代码，有多种排序方法，对于程序开发可以直接使用。-C# ranking Daquan source code, a number of ranking methods for the development of procedures can be used directly.

MD5算法的verilog实现，同时包含有testbench。-Verilog of MD5 algorithm is realized, includes testbench at the same time .

IEEE2008年文章An Image Encryption Scheme Based on Chaotic Map -An Image Encryption Scheme Based on Chaotic Map

KASUMI加密算法，3GP通信加密标准。算法简单，适合调试学习使用-KASUMI encryption algorithm, 3GP communications encryption standard. Algorithm is simple and suitable for studying the use of debugging

Twofish 采用128位数据块(128 bits lock)，128-192-256-bit 可变长度密钥。-using Twofish 128 blocks of data (128 bits lock) EliteConnect (TM) Universal-192-256-bit variable-length keys.

ElGamal算法-ElGamal algorithm

应用背景此库是C语言编写的MD5加密源代码，包含MD5.c,MD5.h,简介txt文件MD5.txt及一个测试代码testmd5.c.代码在ubuntu12.04服务器版本成功测试通过。关键技术Message Digest Algorithm MD5（中文名为消息摘要算法第五版）为计算机安全领域广泛使用的一种散列函数，用以提供消息的完整性保护。该算法的文件号为RFC 1321（R.Rivest,MIT Laboratory for Computer Science and RSA Data Security Inc. April 1992）。

本次实现采用流水线结构，分析子密钥与原始密钥的直接关系，利用组合逻辑同时产生16个子密钥，总体上既兼顾了效率，又不占用太多资源，经仿真测试，完全通过。