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我正在遵循本网站http://www.gregboggs.com/php-blowfish-random-salted-passwords/中的指南，但由于某种原因，在检查密码是否相同时它会失败。

html 很简单，2 种形式，一种用于创建帐户，一种用于检查。代码可以在这里看到http://jsfiddle.net/Xf2Tc/

作为输出我得到： salt = salt in database password in database: $2a$05$BcTDz3GVPJrLH3YRPF9FZ.uRBssr0ncQ4exG4/EtmnJ7Fz2CkoVha 但重新加密的密码总是非常小。BcPgSBqZz80dw

我一定是用错了盐什么的。

如果有人可以编辑得更有条理，我将不胜感激。

<?php 
defined( '_JEXEC' ) or die( 'Restricted access' );
    $hostname="exampleHost";
    $database="exampleDB";
    $username="exampleUsername";
    $password="examplePassword";
    if(isset($_POST['Upassword'])&&isset($_POST['account'])&&!empty($_POST['Upassword'])&&!empty($_POST['account']))    {
        try {
            $pdo = new PDO("mysql:host=$hostname;dbname=$database", $username, $password);
            $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

            $Upassword = mysql_real_escape_string($_POST['Upassword']);
            $account = mysql_real_escape_string($_POST['account']);

            //This string tells crypt to use blowfish for 5 rounds.
            $Blowfish_Pre = '$2a$05$';
            $Blowfish_End = '$';

            $Allowed_Chars ='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789./';
        $Chars_Len = 63;

            // 18 would be secure as well.
            $Salt_Length = 21;

            $mysql_date = date( 'Y-m-d' );
            $salt = "";

            for($i=0; $i<$Salt_Length; $i++)
            {
                $salt .= $Allowed_Chars[mt_rand(0,$Chars_Len)];
            }
            $bcrypt_salt = $Blowfish_Pre . $salt . $Blowfish_End;

            $hashed_password = crypt($Upassword, $bcrypt_salt);
            $stmt = $pdo->prepare("INSERT INTO users (reg_date, account, salt, password) VALUES (:mysql_date, :account, :salt, :hashed_password)");
            $stmt->bindParam(':mysql_date', $mysql_date, PDO::PARAM_STR);
            $stmt->bindParam(':salt', $salt, PDO::PARAM_STR);
            $stmt->bindParam(':account', $_POST['account'], PDO::PARAM_STR);
            $stmt->bindParam(':hashed_password', $hashed_password, PDO::PARAM_STR);
            $stmt->execute();
        } catch(PDOException $e) {
            //file_put_contents('PDOErrors.txt', $e->getMessage(), FILE_APPEND);
            echo 'ERROR: ' . $e->getMessage();
        }
    }
            /*
                * to test for correct encryption
                *
            */
                  if(isset($_POST['Upassword2'])&&isset($_POST['account2'])&&!empty($_POST['Upassword2'])&&!empty($_POST['account2']))  {
    try {
        $pdo = new PDO("mysql:host=$hostname;dbname=$database", $username, $password);
        $stmt = $pdo->prepare("SELECT salt, password FROM users WHERE account=:account");
        $stmt->bindParam(':account', $_POST['account2'], PDO::PARAM_STR);
        $stmt->execute();
        $row = $stmt->fetch(PDO::FETCH_ASSOC);

        $Upassword2 = mysql_real_escape_string($_POST['Upassword2']);
        echo $row['salt'];
        $bcrypt_salt = $Blowfish_Pre . $row['salt'] . $Blowfish_End;
        $hashed_password = crypt($Upassword2, $bcrypt_salt);

        echo "PassDB: " .  $row['password'];
        echo '-------------------------------------------';
        echo "result: " .  $hashed_password;
            echo '-------------------------------------------';
        if ($hashed_password == $row['password']) {
          echo 'Password verified!';
          }
          echo 'i am here';

    } catch(PDOException $e) {
    //file_put_contents('PDOErrors.txt', $e->getMessage(), FILE_APPEND);
    echo 'ERROR: ' . $e->getMessage();
    }
}
?>
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1 回答 1

1

如您所见，我将代码分成 2 个 if 语句，这意味着在检查密码是否正确时未设置我的 Blowfish_Pre 和 $Blowfish_End。

解决方案要么在 if 语句之前设置此变量，要么使用两次设置它们。

希望它可以帮助某人。

于 2012-11-11T17:15:47.427 回答