sha256。256位的sha哈希函数算法，将明文进行散列加密处理。

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

DES算法，在VC++环境下调试，对成密码算法-DES algorithm, in VC++ Debugging environment, and into a cryptographic algorithm

adfgx密表密码-adfgx secret password

本文介绍了在JAVA环境下如何实现IDEA对称加密算法。由于电子商务和电子政务的普及，安全加密技术在其中应用非常广泛，对安全加密技术的要求也很高。目前在JAVA环境下实现IDEA加密具有很多的优势，因为JAVA是基于面向对象的编程语言,并且由于它的平台无关性能被大量应用于Internet的开发。-This paper presents the Java environment IDEA how to achieve symmetric encryption algorithm. As e-commerce and e-government popular, security encryption technology, which is widely used for security encryption technology requirements is also high. In Java environment under IDEA encryption has many advantages, because Java is based on object-oriented programming language, and because it is platform independent performance was widely used in Internet development.

VB的MD5算法源码 VB的MD5算法源码-VB source code of MD5 algorithm is the MD5 algorithm for VB source code of MD5 algorithm for VB source code

Compare Two Files HMACSHA1 VB 2005

大数计算器，有加减乘乘方求余求逆 可用于密码学的课程设计。-Large Number Calculator, there are more than addition and subtraction by inverse involution for cryptography can be used for curriculum design.

ENIGMA3模拟WW II加密算法-ENIGMA3 simulation WW II encryption algorithm

Base64Coding源码-Base64Coding FOSS

使用7Z开源代码，实现的自定义的压缩解压程序，可以和自己的程序组合，提高效率