我试图验证数据库中的密码,但它不起作用。 请查看我的代码,让我知道什么是错的。
将用户名和密码存储到数据库的代码。
<?php
echo "enter the username \n";
$username = trim(fgets(STDIN));
echo "enter the password\n";
$password = trim(fgets(STDIN));
//connecting to database
$con=mysqli_connect("localhost","sqldata","sqldata","accounts");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$salt = substr(sha1(mt_rand()),0,22);
$hashedPassword= crypt($password , '$2y$10$' . $salt);
echo $hashedPassword;
mysqli_query($con,"INSERT INTO login (username, password)
VALUES ('$username', '$hashedPassword')");
mysqli_close($con)
?>
验证密码的代码如下
<?php
echo "enter the username \n";
$username = trim(fgets(STDIN));
echo "enter the password\n";
$password = trim(fgets(STDIN));
//connecting to database
$db = mysql_connect("localhost","sqldata","sqldata") or die(mysql_error());
//selecting our database
$db_select = mysql_select_db("accounts", $db) or die(mysql_error());
$result= mysql_query("select * from login where username = '$username' ");
if ( !$result ) exit( "$userName wasn't found in the database!" );
$row = mysql_fetch_array( $result );
$storedPassword = $row['password'];
$salt = substr(sha1(mt_rand()),0,22);
$hashedPassword= crypt($password , '$2y$10$' . $salt);
if (crypt($hashedPassword) == $storedPassword)
{
echo "ok";
}
else
{
echo "error";
}
?>
答案 0 :(得分:1)
将密码保存到您正在使用的数据库时:
$hashedPassword= crypt($password , '$2y$10$' . $salt);
但是当您检索密码并检查密码时,我发现了一些错误:
$storedPassword = $row['password'];
$salt = substr(sha1(mt_rand()),0,22);
$hashedPassword= crypt($password , '$2y$10$' . $salt);
if (crypt($hashedPassword) == $storedPassword){/*...*/}
1,不应该:
$hashedPassword= crypt($password, '$2y$10$' . $salt);
是
$hashedPassword= crypt($storedPassword, '$2y$10$' . $salt);
2,您似乎正在使用crypt
两次:
$hashedPassword= crypt($password , '$2y$10$' . $salt);
if (crypt($hashedPassword) == $storedPassword)
所以不应该只是:
$hashedPassword= crypt($storedPassword, '$2y$10$' . $salt);
if ($hashedPassword == $storedPassword){/*...*/}
答案 1 :(得分:1)
这比你想象的要简单。 crypt格式有点聪明:它包含salt作为加密密码的开头,格式为(方法)(salt)(哈希)。
当使用crypt()时,它只查看(方法)(salt)并使用它们返回(方法)(salt)(哈希),所以要验证密码,只需要你需要的一切要做的是将加密的密码作为盐传递并查看结果是否匹配。也就是说,
crypt($testPassword, $hashedPassword) === $hashedPassword