Base64 application components

一个使用des加密传输的unix下的login程序的服务器端和客户端- Uses des to encrypt under the transmission unix login procedure server end and the customer end

The Cryptography API: Next Generation(CNG) is a new and agile framework in Windows Vista, which implements an extensible provider model that allows you to load a provider by specifying the required cryptographic algorithm rather than having to hardcode a specific provider. -The Cryptography API: Next Generation (CNG) is a new and agile framework in Windows Vista, which implements an extensible provider model that allows you to load a provider by specifying the required cryptographic algorithm rather than having to hardcode a specific provider.

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。

硬件求解平方根源代码加密 (硬件求解平方根的，将license添加到原有的MaxplusII或QuartusII的license中就可以直接使用，但源代码加密。altera提供 )-solving square root of the hardware encryption code (square root of the hardware solution will be added to the original license MaxplusII or Quartus II of the license which can be directly used, but the source code encryption. ALTERA provide)

加密算法。-Encryption algorithm.

将小于32位的码字用1011编程循环冗余码！ 并且可以检验已编好的循环冗余码是否正确！-Will be less than 32-bit code word to use Cyclic Redundancy Code 1011 programming! And can be tested has been a good cyclic redundancy code is correct!

md5算法是计算机密码学里经典的算法，实用价值很高，设计的关键在于随机数的产生，本程序采用传统的利用计算机时钟采集种子的办法生成随机数种子。-md5 password algorithm is computer science Lane classic algorithms, highly practical, design is the key to the selection of random numbers, the procedure using the traditional use of computer clock seed collection methods generate random number seed.

数据加密技术之几种算法 sa.txt.gz-data encryption technology several algorithms rsa.txt.gz

另类密码登录窗体（拼图），只有正确拼出结果图才能进入。-alternative Password Login Window (puzzles), the only correct map decorated results can be admitted.

鉴于单纯设置一个计数器易被查出，通过修改使其不起作用。我们设计的程序可以通过数据文件，软件执行前通过关键字找到计数基数，然后计算和判别，如果在合理范围，则设定新的关键字，将计数基数放在新关键字指定的位置，并执行子程序 则启动自毁程序。