借助MIRACL大数运算库实现对共享软件的安全注册。

用C编写的100行DES加密算法，请参考-C prepared with 100 lines DES encryption algorithm, please refer to

美国加密中心公布的DES程序-American Center for the encryption process DES

关于数组排序的经典程序。-Sorting an array of classical procedures.

Ｃ的原代码，可以参考的．用一定的下在价值-the original C code can reference. With a certain value in the next

关于pe文件的汇编语言-on pe language compilation of documents

Base64组件的应用-Base64 application components

含有常用的一些加密标准算法实现- Includes the commonly used some encryption standard algorithms to realize

文件加密用的C++源代码-file encryption using the C source code

对证书的基本操作，如读取证书DN，证书有效期等-Basic operation of the certificate, such as reading the certificate DN, the certificate is valid, etc.

该程序实现单层的DES加密算法，其中CDes.cpp为源程序，其中调用的文件功能如下：dataofText.txt文件是输入的明文，以换行分割各个数据；dataofKey.txt文件时输入的密钥，以换行分割；dataofDES.txt文件是输出的加密数据，其中包括各轮子密钥以及各轮加密输出，以及最后得到的密文，在文件中都有说明。-the realization of the single DES encryption algorithm, which CDes.cpp to source files, Calling the document which functions as follows : dataofText.txt document is imported specifically, in exchange for various bits of data; dataofKey.txt paper input key to change bits; dataofDES.txt document is the output data encryption, including the wheels round and the key encryption exports, and finally the secret text in the document have been described.