RegistTimes RegistDays时间限制控制控件。(有源代码）工作在：D2 D3 D4 D5。作者：Mats Asplund。...

The class has a methode named make_CRC that gets a byte stream and start/end offsets then calculate and return a 16 bit CRC according to determined POLYNAMIAL.The POLYNAMIAL is a private field of the class.

sha-1算法是目前常用的数字摘要算法，可以为任意长度的数据生成20字节的数字摘要，是数字签名的基础-sha-1 algorithm is commonly used in digital digest algorithm, for arbitrary length of 20 bytes of data generation digital summary is the basis of digital signatures

Diamond加密算法-A Diamond encrypt arithmetic

crc 详尽的源码 值得参考 具体要求可根据自己需要设置-CRC detailed reference source should be specific requirements may need to set up according to their own

这是我在学习Visual C++过程中做过的一个程序,可以作为大家学习Visual c++编程能力学习的参考,相信对读者会有所启发.-This is my learning Visual C conducted in the course of a procedure, As we can learn Visual Programming c learning ability of reference, I believe the readers will be inspired.

循环异或-XOR cycle

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.

des加密算法,用于IP通讯方面的,用VHDL写成的源程序-des encryption algorithm used for IP communications.the source codes are written in VHDL

VC做成的MD5的算法工具，可以学习一下-VC made the MD5 algorithm tool to study the

SHA-1加密算法-SHA-1 encryption algorithm