Playfair源代码是很简单的，随着网络的现有的版本是不同的…

通过对OpenSSL对称密码算法函数的调用，实现常用的对称加密。这个工具主要的功能已经实现，而且还可以对大文件进行加密，可能效率上还需进一步完善，因为对大文件加密时，太差劲的电脑会感觉有点卡！另外，它还可以对电影加密，不妨一试。-Symmetric cryptographic algorithm through OpenSSL function calls to achieve common symmetric encryption. The main function of this tool has been achieved, but also can encrypt large files, you may need to further improve efficiency, because the large file encryption, too bad the computer will be felt Dianka! In addition, it can encrypt the film, worth a try.

rsa算法实现，用的是c++。欢迎大家随便下载-rsa algorithm, using c++. Welcome to the casual download

文件加密用的C++源代码-file encryption using the C source code

DES算法的C语言实现，大家可以参考一下。-DES algorithm to achieve the C language, we can reference.

crc32加密算法，希望对大家有帮助，多多支持-CRC32

RSA演示代码，运行环境VC++6.0，研究RSA的可以-RSA demo code, runtime environment VC++ 6.0, Research RSA can

有密码的加壳源码.只是简单的介绍下壳方法.牛人见笑了-Has the password Canadian shell source code

资源描述在IP层加密的IPSEC源码，包括各个模块的测试代码，可以针对具体的TCPIP协议栈进行移植，本人已经在uc/tcpip协议栈上进行了移植，测试成功，实现了局域网内多个节点的安全通信

C++ implementaion for RSA together with the Wiener attack. It uses NTL library for big numbers

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