#include <stdio.h>
#include <stdlib.h>
#include <openssl/md5.h>
#include <string.h>
#define LINE 1024
//按行读取文件
char *ReadData(FILE *fp, char *buf)
{
return fgets(buf, LINE, fp);
}
//MD5加密函数
char* jm(unsigned char *data)
{
unsigned char md[16];
int i;
char tmp[3]={'\0'},*buff;
buff=malloc(33);
buff[0]='\0';
MD5(data,strlen(data),md);
for (i = 0; i < 16; i++){
sprintf(tmp,"%2.2x",md[i]);
strcat(buff,tmp);
}
return buff;
}
//字符串过滤函数
void delstr(char* str)
{
int i=0;
for(i=0;str[i]!='\0';i++)
{
if(str[i]=='\n'){str[i]='\0';break;}
}
}
void main(int argc,char **argv)
{
FILE *fp;
char *buf,*p;
char _md5[33]={'\0'},buff[33]={'\0'};
if (argc!=3)
{printf("exp:\ncMD [hash...] [passwd file name...]\nfrom 乔3少 and 食猫鱼 \nblog:qiaoy.net\n");}
else
{if ((fp=fopen(argv[2],"r"))==NULL)
{
printf("Cannot open file!\n");
exit(0);
}
buf = (char *)malloc(LINE*sizeof(char));
p = ReadData(fp, buf); //将每行的内容读到buf中
while (p)
{
delstr(buf);
char* _md5=jm(buf); //对该行的任意操作
if (strcmp(argv[1], _md5) == 0)
{printf("[%s]---------------->[%s]\n",buf,_md5);
exit(0);}
else
{p = ReadData(fp, buf);} //指针移到下一行
}
fclose(fp);
}
}
注释已在代码中，编译命令和使用如图：
