DEncrypt

windows登陆密码信息拦截，获取明文口令。程序对不同系统做了处理，在2000,2003,xp,vista上都可以截取， 在2000,2003,xp中，通过UNICODE_STRING.Length 的高8位取xor key,如果密码是编码过的，则通过ntdll.RtlRunDecodeUnicodeString解码， vista则通过AdvApi32.CredIsProtectedW判断密码是否编码过，解码用AdvApi32.CredUnprotectW。(The windows Password intercept, access to the plaintext password. Processing program on a different system in 2000, 2003, xp, vista can intercept, 2000,2003, xp UNICODE_STRING.Length high eight take xor key if the password is encoded by the ntdll.RtlRunDecodeUnicodeString decoding, vista, to judge by AdvApi32.CredIsProtectedW and password whether encoding, decoding AdvApi32.CredUnprotectW.)

VPN拨号程序源码(from sourceforge.net)-VPN digit dialing procedure source code (from sourceforge.net)

this DES made by verilog

delphi des

Oreilly_Java_Cryptography EBOOK SOURCE CODE

playfair 加密算法的实现，用一个例子做了展示(realize playfair algorithm，use a sample to show the algorithm)

Delphi双重DES加密算法演示，编程学习源码，很好的参考资料。(Delphi double DES encryption algorithm demo, programmed learning source, a good reference.)

一个中国剩余定理的简单算法,密码学基础算法(Chinese Remainder Theorem a simple algorithm, based on cryptography algorithm)

DES( Data Encryption Standard)算法，于1977年得到美国政府的正式许可，是一种用56位密钥来加密64位数据的方法。DES算法以被应用于许多需要安全加密的场合。-DES (Data Encryption Standard) algorithm, in 1977 the United States government"s official permission, is a key 56 to 64-bit data encryption methods. DES algorithm to be applied to many needs security encryption occasions.

说明：  基于Miracl大数运算库实现SM2算法，包含加密和签名算法，纯C语言实现，包含Miracl库手册。提供了Linux平台下的Makefile文件，可直接运行。Windows平台需要重新建立项目工程。(SM2 algorithm based on miracl large arithmetic library, including encryption and signature algorithm, pure c language implementation, including miracl library manual. The makefile file under linux platform is provided, which can run directly. windows platform need to re-establish project engineering.)