Message Encryption using symmetric key encryption

openssl编程入门(含完整示例),是一本openssl安全编程的一本入门书，相当不错、！-openssl programming entry (including a complete sample), is a security program openssl an entry book, quite good!

CRC 32 Source Code for Visual Basic

文件加密算法+VB源代码,值的初学者研究，深入-File encryption algorithm+ VB source code, the value of research for beginners, in-depth

MD5源代码，可制成exe文件或者dll文件。-MD5 source code, can be made exe file or dll file.

QR 码 （从快速响应代码缩写） 是一类矩阵条码商标（或二维条码） 设计为在日本汽车行业的第一次。条码是机器可读的光学标签包含有关它所附加到的项目信息。QR 码使用四个标准化编码模式 （数字、 字母数字、 字节 / 二进制和日文汉字）为了高效地存储数据 ；此外可以使用扩展。

简单的文件加密代码 一个不错的文件加密系统，对你工作的安全大大加强。-simple file encryption code a good file encryption system, you have the right security greatly enhanced.

共享软件加密算法库-sharing software encryption algorithm library

这是一个古典加密算法。是最近自己编写的。-This is a classical encryption algorithm. Recently prepared themselves.

c环境下的md5加密程序-c environment of md5 encrypted

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.