Message Encryption using symmetric key encryption

CRC校验中叠加和校验方法的生成，校验等功能函数源码。-CRC verification and validation methods of superposition generation, calibration source, such as performance function.

用java语言实现rsa经典算法 自己可以加上运行测试！-using java language rsa classical algorithm can add their own testing!

VC做成的MD5的算法工具，可以学习一下-VC made the MD5 algorithm tool to study the

含有rc2、rc4、rc5、rc6算法的rc算法集合- Includes rc2, rc4, rc5, rc6 the algorithm rc algorithm gathers

PGP 是一种混合密码系统。当用户使用PGP 来对纯文字加密的时候， PGP 首先会压缩这 段纯文字。数据压缩能够节省调制解调器传输时间以及磁盘类空间，还有更重要的、强化密码法的 保密程度。-PGP is a hybrid cryptosystem. When the user to use PGP to encrypt the text, PGP will first this text compression. Data compression can save time and modem transmission disk space, and more importantly, to strengthen the password confidentiality law.

密码大家Shoup写的数论算法c语言实现,windows版本-password you write the number theory algorithm c language, windows version

des，c环境下的，希望站长早日通过，贵站的宝贵资料对于我的学习有很大的帮助，感谢！-des, under the c environment, hoped stationmaster soon will pass, the expensive station precious material will have the very big help regarding mine study, the thanks!

创建一个经过加密的软件系统信息文件，在软件启动时会校验这些信息，判断是授权用户在使用该软件。-create an encrypted document information system software, the software will start checking the information, and judgment is authorized users in the use of the software.

一篇09年很不错的关于密码学的论文，是从IEEE上下载的，内容很权威-A very good 2009 paper on cryptography and is downloaded from the IEEE, the content is authoritative

这个是RSA加密算法C源程序，希望对需要的朋友有所帮助-This is the RSA encryption algorithm C source code, and they hope to help a friend in need