数字签名PDF

数字水印技术的基本概念-A survey of Digital watermarking technique. It may an overview about watermarking.

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

VHDL implementation of the twofish cipher for 128,192 and 256 bit keys. The implementation is in library-like form All needed components up to, including the round/key schedule circuits are implemented, giving the flexibility to be combined in different architectures (iterative, rolled out/pipelined etc). Manual in English is included with more details about how to use the components and/or how to optimize some of them. All testbenches are provided (tables, variable key/text, ECB/CBC monte carlo) for 128, 192 and 256 bit key sizes, along with their respective vector files.-VHDL implementation of the twofish cipher for 128,192 and 256 bit keys. The implementation is in library-like form All needed components up to, including the round/key schedule circuits are implemented, giving the flexibility to be combined in different architectures (iterative, rolled out/pipelined etc). Manual in English is included with more details about how to use the components and/or how to optimize some

计算HASH值的C语言源代码，包括7种算法。-Calculated HASH value of C language source code, including seven kinds of algorithm.

应用密码学密码算法源代码-password algorithm source code

普莱费尔密码，我写的 C# 语言。本软件为越南人的。With 这个软件，you 可以加密和矩阵 5 x 5 的文本解密。

这是个好东西，可以代替系统的记事本。-This a good thing, the system can replace the notebook.

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

windows2000以上自带的加密api-dpapi的使用例子.-windows2000 above onboard encryption api- dpapi examples of the use.

ESCROW算法的实现算法！-ESCROW algorithm algorithm!