登錄散列用戶輸入

Question

我並不是一個PHP程序員，但我試圖解決如何在用戶登錄網站時讀取散列密碼。我已經用下面的PHP保存的哈希密碼：

 $pass = mysql_real_escape_string($_POST['pass']); 

    $key = $pass; 
    $string = $pass; 

    $encrypted = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5($key), $string, MCRYPT_MODE_CBC, md5(md5($key)))); 
    $decrypted = rtrim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, md5($key), base64_decode($encrypted), MCRYPT_MODE_CBC, md5(md5($key))), "\0"); 

    mysql_select_db("db", $con); 

    $sql="INSERT INTO members_tbl (email, pass, registration_date) 
    VALUES ('$email','$encrypted', now())"; 

我不知道如何讀什麼用戶inputed並請檢查是否它一樣解密的變量，如果真正標誌他們這裏。我嘗試：

//Sanitize the POST values 
    $signin_email = clean($_POST['signin_email']); 
    $signin_pass = clean($_POST['signin_pass']); 

    //Input Validations 
    if($signin_email == '') { 
      $errmsg_arr[] = 'Username missing'; 
      $errflag = true; 
    } 
    if($signin_pass == '') { 
      $errmsg_arr[] = 'Password missing'; 
      $errflag = true; 
    } 

    //If there are input validations, redirect back to the login form 
    if($errflag) { 
      $_SESSION['ERRMSG_ARR'] = $errmsg_arr; 
      session_write_close(); 
      header("location: index.php"); 
      exit(); 
    } 

    $pass = $signin_pass; 

    $key = $pass; 
    $string = $pass; 

    $encrypted = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5($key), $string, MCRYPT_MODE_CBC, md5(md5($key)))); 
    $decrypted = rtrim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, md5($key), base64_decode($encrypted), MCRYPT_MODE_CBC, md5(md5($key))), "\0"); 

    //Create query 
    $qry = "SELECT * FROM members_tbl WHERE email='$signin_email' AND pass='$decrypted'"; 

    //do something 

Answer 1

與您在用戶登陸創建哈希密碼數據庫只是比較哈希密碼，如果它們是相同的匹配。