一篇数字水印方面的文章。

要在最低visual studio 2005的版本下运行，在运行后出现的对话框中输入密码就可以在下面的对话框中加密你想要加密的内容，可以保存加密后的内容，也可以观看加密后的内容。-To the minimum version of visual studio 2005 run, after running the dialog box that appears, type the password in the following dialog box encryption you want to encrypt the content can be saved encrypted content, but also be able to watch encrypted内容.

取主机网卡地址，可用于加密-from mainframe NIC addresses can be used to encrypt

C++的一个MD5加密算法。对需要加密的接口非常有用的-C++ An MD5 encryption algorithm. The need for encryption interface very useful

它也可以用来解除Adobe Acrobat PDF文件密码的工具，它可以帮助解决加密PDF无法编辑和复制/打印的问题，支持所有版本的Acrobat加密(包含7.x)，也支持128位加密。 -It also can be used to lift the Adobe Acrobat PDF files password tool, it can help to solve encrypted PDF can not edit and copy/print the questions, and support all versions of Acrobat encryption (including 7.x), also supports 128-bit encryption.

完整的EVRC压缩解压缩算法源码,附带一个简单的例子程序。-EVRC complete source compression decompression algorithms, with a simple example program.

My stuff is aimed at teaching, not efficiency. The others are probably much better implementations. The last one has both C++ and Java versions where my stuff is all C. So lots of choices!

含有多种公开密钥算法、多种块加密、多种数据流加密、多种HASH函数、多种CheckSum校验、多种MAC校验等几十种加密算法的程序-Contain a wide range of public key algorithm, multi-block encryption, multiple data stream encryption, multi-HASH function, multi-Checksum validation, multi-MAC check dozens of encryption algorithm, such as procedures

c++写的md5加密算法，易于移植 md5加密-c++ to write the md5 encryption algorithm, easy to transplant md5 encryption

用VC做的一个画直线和曲线的程序。-VC do a painting line and curve procedure.

利用PGP加密技术保护电子邮件安全,很不错的-The use of PGP encryption technology to protect e-mail security, very good