一个简单的数据加密程序转变思想，因为uppercas…

RC4伪随机流加密算法，VC++编写，调试通过。控制台界面。-Pseudo-random RC4 stream encryption algorithm, VC++ development, debugging through. Console interface.

MD5计算,可以将文件提取出摘要，进行比对，校验，实现指纹算法-MD5, can be extracted document summaries, compare and testing to achieve fingerprint algorithm

完全解决了中文问题- Completely has solved Chinese problem

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

implementation of rijndael furious algorithm to encrypt and decrypt information

该BM算法用来求二元域上长度为１１的序列的线性综合解-the BM algorithm used for binary domain length of the sequence of 11 linear integrated solution

零数据加密算法（数据加密算法，DEA）是对称加密算法，可能是最广泛使用的密钥系统，特别是在金融数据的安全性，最初开发的DEA是嵌入在硬件中。一般情况下，ATM（自动取款机，ATM）使用DEA。它出自IBM的研究工作，IBM有它的专利数年，但1983年以后已经过期，在公共范围，允许在特定条件和使用情况下免除专利使用费。 1997年正式通过了美国政府。DES原来的思路可以参考一下二战中德国的Enigma机，大约相同的基本思想。传统的密码加密都是由古代的观念，从循环移位，谜机器是基于扩散模糊。但原则的本质是相同的。现代DES在二进制级别做着同样的事：替代模糊，增加了分析的难度

DES( Data Encryption Standard)算法，于1977年得到美国政府的正式许可，是一种用56位密钥来加密64位数据的方法。DES算法以被应用于许多需要安全加密的场合。（如：UNIX的密码算法就是以DES算法为基础的）。-DES (Data Encryption Standard) algorithm, in 1977 the United States government"s official permission, is a key 56 to 64-bit data encryption methods. DES algorithm to be applied to many needs security encryption occasions. (Eg : UNIX password algorithm is to DES algorithm-based).

RSA加密的程序-RSA encryption procedure

密码编码和密码分析：原理与方法-encryption and password Analysis : Theory and Methods