加密与解码

Arithmetic for integers of almost unlimited size for C and C++. Developed and copyrighted by Ralf Dentzer-Arithmetic for integers of almost unlimit ed size for C and C. Developed and copyrighted by Ralf Dentzer

个人觉得很不错的简单代码，用很少的程序实现，非常值得一看-in my view, it s a nice and simple code with a few program to achieve the aim. worth to take a look

简单的基于DES的加密算法及雪崩效应分析。请仔细阅读内附的说明文件。-DES encryption algorithm and analysis of avalanche effect. Please read the attached note.

密码察看器，经过修改的-look for passwords, as amended, the

一个用ATL开发的Base64编码控件，使用简单,用EnCode64(str)编码,EnCode64(str)解码,属性EnCode存放源码,属性DeCode存放Base64码，开发平台：VC.Net- The Base64 code which develops with ATL controls, the use is simple, (str) codes with EnCode64, EnCode64 (str) decodes, the attribute EnCode depositing source code, attribute DeCode deposits the Base64 code, develops the platform: VC.Net

应用背景在这篇文章中，我将介绍一个简单的源代码，让您的数字签名PDF文档和修改它的元数据。我会用优秀的 自由港；iText  ；图书馆：itextsharp，可以下载 ；这里。你需要2008个视觉工作室能够打开和建设该项目。关键技术itextsharp提供了很多有趣的功能，创建和操纵PDF文件，但在这篇文章中，我们将只使用数字签名功能。我也会用一些功能来操作# PKCS 12证书。你唯一需要知道的是，我们的数字签名将使用从蛋白提取私钥# 12证书。

C#程序来实现生成多项式的循环冗余校验,通过修改能校验多项式-C# program to implement the cyclic redundancy check generator polynomial, by modifying the polynomial can check

VIGENERE是法国的密码专家，以他明命名的密码是一种典型的多表密码！他的加密脱密可以通过文明维吉利亚方阵解决！-VIGENERE French cryptologist, with his name out the password is a typical multi-table password! From his secret encryption can solve civilization faces phalanx!

这是一个jsp的的项目。用于支付宝接口开发的MD5加密算法，详细的内容在里面   。

用matlab实现的图像加密算法-基于Arnold变换的图像加密-using Matlab achieve image encryption algorithm-based Arnold Transform Image Encryption