Tutorial for Vb .Net for Encryption/Decryption of data

这是我的代码，我用 c 语言编写的库 gmp 结合时的代码。我在 Visual studio 2013 上进行编译。我的程序是计算值为公共密钥 n、 e、 秘密的关键 d 和后存储在文件的文本。该程序有 3 功能是计算，最后的工作会议，生成密钥并转到上一届会议。当用户选择退出程序的功能然后程序将退出。

1、 实验要求：用高级语言实现IDEA算法的加密-1, the experimental requirements: use of high-level language implementation of the IDEA encryption algorithm

加密算法SHA1的C语言实现示例，是一个C++类实现-The example of encryption arithmetic SHA1 using C program,which is a C++ class.

Rijndael,实现AES的算法，附带了源代码和flash演示文件，讲解的很详细！-Rijndael, the AES algorithm realize, comes with source code and the flash presentation to explain the great detail!

矛与盾之争（二）——CRC原则部分

数据加密的工具源代码--Source code of data encryption tool

What Does the code DO? Sometimes we may desire to hide our file contents from others.One of the possible way is encrypting these files.Here a simple encryption technique is used(In VB - The same technique can be implemented in "c" also.) Program flow Explained * Open the File to be encrypted for Binary Access Read(Say Source File) * Open a temparory file where encrypted data is stored for Binary Access Write(Say Destination File) * Loop through the Source File Byte by Byte * For each byte read from the file, Complement the data. (Using Not operator (in C we have to use "~" operator) * Write Complemented Data to Destination File * Delete the Source File * Rename Destination file as Source File(Now Encryption is over) -What Does the code DO? Sometimes we may desire to hide our file contents from others.One of the possible way is encrypting these files.Here a simple encryption technique is used (In VB- The same technique can be implemented in

有多种加密算法，如：字节取反、循环异或、码变换法、CSED、D3DES。-There are a variety of encryption algorithms, such as: anti-byte check, recycling XOR, code transformation, CSED, D3DES.

文件加密的过滤驱动程序，适用于大部分的文件加密软件-File Encryption filter driver, applies to most of the file encryption software

DES算法程序，此程序为完整的程序，可以直接下载使用-DES algorithm procedure, this procedure for the complete procedure, can be directly downloaded using