qtMd5 加密算法

       QString username = "admin";  

String password = "admin123";
QString fileName="./pwd.txt";
       QFile file(fileName);
if(!file.open(QIODevice::ReadWrite | QIODevice::Text))
       {
          QMessageBox::warning(this,"warning","文件操作错误",QMessageBox::Yes);
       }
       QTextStream in(&file);
**********加密开始***********/
       QString usernamemd5;
       QString pwdmd5;
      QByteArray bb;
       bb = QCryptographicHash::hash ( password.toAscii(), QCryptographicHash::Md5 );
       pwdmd5.append(bb.toHex());
       bb = QCryptographicHash::hash(username.toAscii(),QCryptographicHash::Md5);
       usernamemd5.append(bb.toHex());
***********加密结束****************/
//QMessageBox::warning(this,"warning",usernamemd5,QMessageBox::Yes);
       in<<usernamemd5+"
";
       in<<pwdmd5+"
";
       file.close();//到文件里看结果吧~当然用上面的消息框也可以哦