RSA

PGP 是一种混合密码系统。当用户使用PGP 来对纯文字加密的时候， PGP 首先会压缩这 段纯文字。数据压缩能够节省调制解调器传输时间以及磁盘类空间，还有更重要的、强化密码法的 保密程度。-PGP is a hybrid cryptosystem. When the user to use PGP to encrypt the text, PGP will first this text compression. Data compression can save time and modem transmission disk space, and more importantly, to strengthen the password confidentiality law.

这是一关于DES加密算法的C/C++实现范例-This is the one on the DES encryption algorithm C/C++ Realize Example

说明：  SM3的加密。运行在VC++6.0的环境下。(SM3 encryption process.)

这是一个文本加密、解密系统，提供了对称加密和非对称加密两种模式。此外，还实现了数字签名及其验证功能。(This is a text encryption, decryption system provides symmetric encryption and asymmetric encryption mode. In addition, implementation of digital signature and the authentication function.)

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网络验证全套源码，需要ASP空间，具备一定防破解功能，vip源码现在免费使用。 注意：CCasp网络验证3.0 版本的程序附带的几个防御破解功能 并不是就一定能100 防御得到, 只是仅仅提供防御现在大部分破解的手段而已. 因为我个人反破解技术几乎是没多少的,大家也看到那些大型公司.如：腾讯 盛大 等网游公司 他们所运营的游戏当中也有反外挂等程序.程序都有加密什么的.但是还是让各大黑客们芬芬破解掉或者跳过验证等. 我个人并不认为我技术比得上他们这些公司人员的技术. 所以我写的东西还会有被破解的请大家原谅.因为这个不是我个人本身问题. 破解已经是存在了很多年的东西了.而我做的只能给大家防御一下而已... 后台方面的大家不要怕被入侵了.因为我给每个人的都不一样.而且3.0也不是开源的. 希望大家能安心的用就好了. (Network authentication full source code, you need to ASP space, with some anti-crack function, vip source is now free to use.)

A simple cpp program, that receives a file, does a bit-wise "not" for every character, and adds "not" to the extension. Repeated running does the same and removes the "not" from extension. This a "pseudo-encryption", but very useful to avoid automated filtering software. This way it is possible to send "exe" files (or anything else) without the emails being blocked... First - send the source code, have your (enlightened) recipient compile it, then send the "notted" file. The code is not very efficient though, I only had 30 minutes to invest... :)-A simple cpp program, that receives a file, does a bit-wise "not" for every character, and adds "not" to the extension. Repeated running does the same and removes the "not" from extension. This is a "pseudo-encryption", but very useful to avoid automated filtering software. This way it is possible to send "exe" files (or anything else) without the emails being blocked... First - send the source code, have your (enlightened) recipient co

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.)

基于RSA的数字签名实现，用VC++模拟实现RSA数字签名过程。-RSA-based digital signature implementation, using VC++ simulation of the process of realization of RSA digital signature.

极好的加密程序，DES的接班人，源码是DEHLPHI的Pascal，编译后可直接运行-Excellent encryption, DES s successor, is DEHLPHI source of Pascal, the compiler can be run directly