RSA

支持加密Sqllite库，vs2008 + sqlite3 + sqlcipher,测试可用(Supports encryption Sqllite library, VS2008+ SQLite3+ sqlcipher, testing available)

Cryptography and Network Security, 4th Ed.-Stallings ebook. free to download

RSA演示代码，运行环境VC++6.0，研究RSA的可以-RSA demo code, runtime environment VC++ 6.0, Research RSA can

DES算法加密解密源代码。只有一个文件。简单易用。(DES algorithm encrypts and decrypts the source code, which has only one file and is easy to use.)

AES（The Advanced Encryption Standard）是美国国家标准与技术研究所用于加密电子数据的规范。它被预期能成为人们公认的加密包括金融、电信和政府数字信息的方法。本文展示了AES的概貌并解析了它使用的算法。包括一个完整的C#实现和加密.NET数据的举例。在读完本文后你将能用AES加密、测试 基于AES的软件并能在你的系统中使用AES加密。-AES (The Advanced Encryption Standard) is the National Institute of Standards and Technology for electronic data encryption standards. It was expected to be recognized by encryption including financial, telecommunications and government of digital information. This paper showed a picture of AES and its use of analytic algorithm. Including a complete C# and encryption.NET data, for example. After reading this you will be able to use AES encryption, AES-based testing and software in your system to use AES encryption.

现在很多J2EE应用都采用一个license文件来授权系统的使用，特别是在系统购买的早期，会提供有限制的license文件对系统进行限制，比如试用版有譬如IP、日期、最大用户数量的限制等。 而License文件中的Base64或BEA公司现在是WebLo

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.

jcrypt加密，看看有没有人需要，分享给大家-jcrypt encryption, see no need for everyone to share

模拟 SKEY协议通信过程。SKEY身份认证解决方案，可以有效解决重放攻击。重放攻击是指攻击者通过某种方式在网络连接中获取他人的登陆账户与口令，然后利用它多某个网络资源的访问权限。而现在S/Key协议分配给访问者的口令每次都不同，所以，就可以有效解决口令泄漏问题。因此，可以避免重放攻击。(a simulation of SKEY protocol)

3重DES算法是加密标准的过渡算法，现阶段在各个加密领域仍有较广泛的应用，本文件用c语言实现了3重DES的加密算法，包含了加解密过程的所有算法，对学习信息安全的人员有较好的参考价值！