借助MIRACL大数运算库实现对共享软件的安全注册。

用MFC实现的对任意长度的文件的MD5加密，得到的是标准的32位十六进制数-Using MFC to achieve for any length of document MD5 encryption, receive the standard 32-bit hexadecimal number

C和Java写的sepent加密算法-C and Java write sepent encryption algorithm

第三代移动系统中以Kasumi为内核的另一加密算法-f8算法的VC++实现-Third-generation mobile system to Kasumi for kernel-f8 encryption algorithm to another algorithm VC++ Realize

Base64编码与解码，MD5加密源码 DEMO-Base64 encoding and decoding, MD5 encryption source DEMO

加密之星(袖珍版)源代码Visual C++源代码-encryption Star (pocket edition) source code Visual C source code

带密钥的md5算法库md5lib.h共有下列函数： char* MDString (char *) /*输入任意一个字符串，经过md5算法处理后，返回结果：一个定长（32个字符） 字符串 */ char* MDFile (char *) /*输入任意一个文件名，文件内容经过md5算法处理后，返回结果：一个定长 （32个字符）字符串 */ char* hmac_md5(char* text, char* key) /*输入任意一个字符串text,和一个用做密钥的字符串key,经过hmac_md5算法处 理，返回处理结果：一个定长字符串（32个字符）*/ 具体使用方法可参考例子sample.c,其运行结果在本文后面。-Md5 algorithm with a key repository md5lib.h total of the following functions: char* MDString (char*) /* enter any one string, after md5 algorithm processing, return the result: a fixed-length (32 characters) string*/char* MDFile (char*) /* enter any of the file name, file contents through the md5 algorithm processing, return the result: a fixed-length (32 characters) string*/char* hmac_md5 (char* text, char* key) /* input a string of arbitrary text, and a string key used as key, after hmac_md5 algorithm processing, return processing results: a fixed-length string (32 characters)*/specific examples of the use of methods can be found sample.c, the results

Base 64 加解码程序-The program of BASE 64 encryption and decryption

安全支持提供器接口（SSPI）源码- Safe support provision connection (SSPI) source code

数据加密的一个库：Crypto++，功能很多，接口完善。-A data encryption library: Crypto++, Features a lot of perfect interfaces.