This program encodes and decodes a character using the Vigenere Square method

凯撒和维吉尼亚加密方法，两种算法都不是很复杂，基本原理也相似所以都写入一个文件中来表示。-Caesar and Virginia encryption method, two algorithms are not very complicated, so the basic principles are also similar to a document written to express.

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

BP算法的C++类，输入输出全部采用文件格式，不用在运行的时候一个一个输入拉-BP algorithm C++ Category, input and output file format used, do not have a running time of an input pull

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).

数据加密技术之几种算法 saeuro-1.03s.zip-data encryption technology several algorithms rsaeuro- 1.03s.zip

DES 加密系统的 C 语言源代码，实现了简单的DES加密系统。-DES Encryption System C language source code, a simple realization DES encryption system.

CRC-16算法的C语言实现（以常见的CRC-ITU为例引出的比特型算法）。-CRC-16 algorithm of the C language (in common CRC-ITU as an example of bit-based algorithm for extraction).

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.

ECC加密算法入门介绍-ECC encryption algorithm introduced entry

idea3a,idea3b,idea3c加密算法-idea3a,idea3b and idea3c encrypting algorithms