Encryption

以C++语言在微机上实现了美国数据加密标准DES。可随微机软盘任意路径下的任何文件，加密，加密文件可在软、硬盘任何目录下或在网络中传送；另一方面可对软、硬盘中的任何文件进行解密，解密后的文件除在末尾多出几个空格符外与原文件完全相同，绝不影响EXE文件，COM文件或数据库文件的使用。密钥有加密者在键盘输入8个字符。(In c++ language microcomputer to U.S. data encryption standard DES. With the computer floppy disk arbitrary path of any of the files, encryption, encrypt files can be in soft, hard disk any directory or in the network transmission On the other hand, soft, hard disk to the any classify documents, the decrypted file in the end in a few more the space appears with the original documents are all the same, never affect EXE file, COM file or database files use. Key there are JiaMiZhe in keyboard input 8 characters. )

这是一个好用的MD5的C++类；这个类可以加在控制台 程序中也可用在MFC中， 并且提供了详细的错误处理 函数，是一个安全的类。例程是一个MD5的MFC程序， 支持字符串和文件两种输入-This is an easy to use the MD5 of the C++ category this category can be added to the console program can also be used in the MFC and to provide a detailed error handling function, is a type of security. MD5 is a routine procedure of MFC, and documentation to support two types of input string

IT_Security_For_Dummies

Delphi双重DES加密算法演示，编程学习源码，很好的参考资料。(Delphi double DES encryption algorithm demo, programmed learning source, a good reference.)

应用密码学密码算法源代码-password algorithm source code

来自putty的大数运算代码，纯C实现，移植性好，RSA的最实现-Large numbers from the putty operation code, a pure C implementation, migration is good, RSA best to achieve

The application wizard has created this CNGCryptFile application for you. This application not only demonstrates the basics of using the Microsoft Foundation Classes but is also a starting point for writing your application.

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好用的东西，大家可以看看，在6.0下编译通过，不错-Useful things, everyone can see that in the 6.0 compiler is passed, a good

语音加密，利用M序列将语音信号乱序，并在收端进行还原。(Speech encryption, using M sequence to disorderly speech signal, and restore at the receiving end.)