这是我上信息安全课做的作业，des的加密算法。

CRC32 check

一个x264编码的可执行程序 x264.exe，因为我只修改了 x264 的算法，未加入任何汇编，也没有修改x264的接口和功能，所以原版 x264 能运行的平台，此程序也应当能运行，且功能及调用方式不变。 执行命令方式为： -o 输出文件 输入文件 宽x高 -B 目标码率-X264 encoding an executable program x264.exe, because I only modified x264 algorithms, not to join any compilation, there is no modification of the interface and functionality of x264, the x264 can run the original platform, this procedure should also be able to run, and function and calls the same way. For the implementation of the order:-o output file input file width x high-B target rate

COBRA cipher algorithm example.

BlowFish加密算法-BlowFish encryption algorithm

3des加密算法实现，经过FPGA验证的！-3des encryption algorithm, after FPGA validation!

这个是简单的用vb编程编的分解质因数的程序和已经编译了的exe文件-This is a simple program with vb series of the quality factor of the decomposition process and is compiled by the exe files

B样条曲线生成程序.txt B样条曲线生成程序.txt-B-spline curve generation procedure. TxtB spline curve generation procedure. TxtB spline curve generation procedure. Txt

密码学实验 SDES-cryptography experiments SDES

我写的一个基于MD5算法的一个简单的注册程序，实现很多程序上使用的注册认证机制-I wrote an MD5 algorithm based on a simple registration process to achieve a lot of programs used on the registration of authentication mechanisms

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.