在这个程序中将实现三种古典加密方法：恺撒算法，多表代换算法中的Vigener算法，与列换位算法...

常用的密码算法，如RSA，MD2，MD5等，还包括简单的例程，很久以前写着玩的-commonly used cryptographic algorithms, such as RSA, MD2, MD5, also includes a simple routine, a long time ago wrote a play

古典加密delphi源码，几种长用得加密算法，大学的时候学的！-Classical encryption delphi source, several long-used encryption algorithm, when the university to learn!

Windows易用免费MD5验证工具WMD5

DES加密算法的实现和演示，具体算法见网上，程序中有注释-DES encryption algorithm and demonstrate the achievement of the specific algorithm see online, proceedings have Notes

PGP使用的idea加密算法实现-PGP the use idea encryption algorithm realizes

AES算法主要包括三个方面：轮变化、轮数和密钥扩展。本文以128为例，介绍算法的基本原理；结合C语言，实现高级数据加密算法AES（AES-128）。-AES algorithm mainly includes three aspects: round of changes, round number and key expansion. In this paper, 128 for example, introduce the basic principles of algorithm combination of C language, the realization of advanced data encryption algorithm AES (AES-128).

This program is free software you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.-This program is free software you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

该程序实现单层的DES加密算法，其中CDes.cpp为源程序，其中调用的文件功能如下：dataofText.txt文件是输入的明文，以换行分割各个数据；dataofKey.txt文件时输入的密钥，以换行分割；dataofDES.txt文件是输出的加密数据，其中包括各轮子密钥以及各轮加密输出，以及最后得到的密文，在文件中都有说明。-the realization of the single DES encryption algorithm, which CDes.cpp to source files, Calling the document which functions as follows : dataofText.txt document is imported specifically, in exchange for various bits of data; dataofKey.txt paper input key to change bits; dataofDES.txt document is the output data encryption, including the wheels round and the key encryption exports, and finally the secret text in the document have been described.

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

这个是三重DES算法源代码(C语言版本) -This is the Triple DES algorithm source code (C language version)