encryption

图象水印的一种基于dct的简单算法例子 期望能对刚开始涉及数字水印的朋友有一点帮助(a watermark image based on a simple algorithm Extra examples can expect to start digital watermarking friends a little help)

rsa加密算法的vc实现，可以实现1024位的加密-the source code of rsa algorithm in vc,which can do 1024bits encryption.

c++实现密钥为4的凯撒密码加密，其中支持明文的大小写-c++ achieve key for Caesar 4 password encryption, which supports the explicit case

用VB做万象密码查询工具，这里用到几个常用的API函数：FindWindow，SendMessage，GetClassName，WindowFromPoint-Vientiane password to use VB to do query tool, used here in several commonly used API functions: FindWindow, SendMessage, GetClassName, WindowFromPoint

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

计算文件hash值的源代码，包含crc,md2,md4,md5,sha,sha1,sha256,ra-Calculated hash value of document

用栈设置 密码 -with Stack set a password

算法参考于《密码编码学及网络安全》上关于RSA加密算法的定义。相关程序在Visual C++ 6.0上能正确运行（估计在其他C语言编程环境下也能运行吧），程序里面详细写上了注解，希望能够给你带来帮助。

AES加密以及解密实现，这是一个AES文件加密软件，用VC++ MFC编写，里面有详细的源代码以及加密和解密的具体实现方法。(AES encryption and decryption to achieve, this is a AES file encryption software, written using VC++ MFC, which has detailed source code and encryption and decryption of the specific implementation method.)

VC写的的AES256加密解密源码，加密解密写在一起，需要的话可剥离(AES VC)