密码学的经典程序

elgamal的源程序-ElGamal

一个用C＋＋、JAVA、C#等编写的数字签名代码序列，里面有三种不同语言写的-A use of C , JAVA, C# Such the preparation of the digital signature code sequence, which has three different written languages

rsa算法实现，用的是c++。欢迎大家随便下载-rsa algorithm, using c++. Welcome to the casual download

这是很著名的一个随机数测试算法。国内很少有人提到。但在国外，可是应用很广-This is a very famous one random test algorithm. Very few people mentioned. But abroad, but very broad application

对于这个问题的实现、刚刚给过一个程序，突然想起另外一种简单一些的方法，一并给出[笔者长期从事移动通信系统的无线链路调制与解调、物理层实现方面的工作。在移动通信GSM系统中，我们进行语音或者业务信道解调时，都会遇到CRC的求解。通常在硬件DSP实现时，特别是40位CRC求解时候，由于生成多项式有41项，DSP最大一次能处理40位，所以使用单个寄存器会遇到一些困难，那么以下这个程序将会解决这一困难（这是针对定点DSP、C55xx的编程实现方法）。]： -For the realization of this issue, just to have a program, suddenly reminded of another simpler way to be given [the author has long been engaged in mobile communication system modulation and demodulation of wireless links, the physical layer to achieve work. GSM in the mobile communications system, we have a voice or channel demodulation operations, it will encounter the solution of CRC. DSP hardware usually realize, especially when solving the 40 CRC, as the generation polynomial has 41, DSP can handle the largest 40, so using a single register may encounter some difficulties, then following this process will solve this One difficulty (which is for fixed-point DSP, C55xx realize programming methods). ]:

防止用DeDe软件反编译delphi程序-preventing anti-software compiler delphi procedures

循环异或-XOR cycle

这是密码学的一个常用算法TWOFISH128，对于学习密码学很有帮助啊。-This is a cryptographic algorithm used TWOFISH128, learning cryptography helpful ah.

创建一个经过加密的软件系统信息文件，在软件启动时会校验这些信息，判断是授权用户在使用该软件。-create an encrypted document information system software, the software will start checking the information, and judgment is authorized users in the use of the software.

AES Rijndael fast security system to encrypt and deycrypt information