本文介绍了在JAVA开发环境中如何对文件和数据进行有效的加密，特别是里面API的调用...

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.

RSA加密实现，希望对大家有所帮助，研究算法是很让人痛苦的事情，大家多多努力-RSA encryption realize, I hope to be helpful to everyone to study the algorithm is a very painful thing, a lot of U.S. efforts

CRC 32 Source Code for Visual Basic

在PB中通过读取硬盘序列号实现软件加密-in PB by reading drive serial number encryption software

密码察看器，经过修改的-look for passwords, as amended, the

ieee加密新文章A New Image Encryption Arithmetic Based on a Three-dimensional Map -A New Image Encryption Arithmetic Based on a Three-dimensional Map

blowfish source code

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

CRC校验程序，使用了CRC-16和CRC-CCITT方法 -CRC inspection program, which use crc-16 and crc-ccitt method

用C语言编写的RSA加密算法，利用大素数分解的原理进行加密的一种算法。-Using C language RSA encryption algorithm, the use of large prime numbers decomposition of the principle of an algorithm for encryption.