一个异或加密方案--C语言实现

核心代码：

 

char encrypt( char f , char c)

{

	return f^c;

}

 

 int OutEncrypt( char *FilePath, char *SecretWord )

{

	FILE *  fp ;

	FILE * fp1;

	char *p= FilePath , *s= SecretWord;

	//char fn[128], *p = fn, ps[10], *s = ps;   //fn[128]存放加密文件路径，ps[10]存放密码

	char ch;

	char *tm = "C:\\temp.temp";   //存放临时文件



	if(( fp = fopen(p,"rb") )== NULL || ( fp1 = fopen(tm,"wb") ) == NULL )

	{

		return 0;    //加密失败

	}



	ch = fgetc(fp);

	while( !feof(fp) )

	{

		s = SecretWord;

		while( *s != '\0' )

		{

			ch = encrypt( ch, *s++ );

			fputc( ch, fp1 );

			ch = fgetc(fp);

		}

	}

	fclose( fp );

	fclose( fp1);

	remove(p);

	rename(tm, p);



	return 1;   //加密成功

}

可以将此加密方案做成.dll格式用于其它项目使用，如：C#，Windows编程，MFC编程中

 

创建.dll工程下载地址：http://download.csdn.net/detail/qq2399431200/6274867