一个增加程序区块的VC代码

应用背景此库是C语言编写的MD5加密源代码，包含MD5.c,MD5.h,简介txt文件MD5.txt及一个测试代码testmd5.c.代码在ubuntu12.04服务器版本成功测试通过。关键技术Message Digest Algorithm MD5（中文名为消息摘要算法第五版）为计算机安全领域广泛使用的一种散列函数，用以提供消息的完整性保护。该算法的文件号为RFC 1321（R.Rivest,MIT Laboratory for Computer Science and RSA Data Security Inc. April 1992）。

一个用移位思想实现的简单数据加密程序，因为不论是大写还是小写字母,其ASC码值都是按顺序排列的.故可以用相对应的ASC码值进行判断以及算法实现.-a shift ideology with a simple data encryption procedures, because both uppercase or lowercase letters, the value of ASC codes are arranged in chronological order according to the. It can be used to be the relative value of ASC code of judgment and algorithm.

ecc algorithm, ecc algorithm-ecc algorithm, the algorithm ecc. ecc algorithm

加密技术源代码学习加密技术-encryption technology to study the source code encryption technology

一种通过判断网卡地址来控制软件使用期限的算法，简单有效。-Address of a card through the control software to determine the use of time algorithms, simple and effective.

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). ]:

inplementation of AES vhdl The use of a list of law, VHDL language based polynomial-based finite field multiplier, for the AES algorithm

实现数据库安全编程,写了一个MD5的加密库-Database Security Programming realize, write a MD5 encryption library

RSA公钥加密，用C实现，大家可以参考一下-RSA public key encryption, using C to achieve, we can refer to

BlowFish加密算法.封装过程按照标准的API形式进行-BlowFish encryption algorithm. Packaging process in accordance with the standard form of the API