所以我正在尝试实现 Bcrypt，我可以让它很好地加密密码，但不能让它从数据库中检索密码。它破坏了网站。
这是我知道它不是最安全的代码，但我将在完成此工作后实施 PDO 准备好的语句。
check_login.php：
<?php
session_start();
require 'functions.php';
ob_start();
$host="localhost"; // Host name
$username="user"; // Mysql username
$password="XXXXX"; // Mysql password
$db_name="DB"; // Database name
$tbl_name="CLL_users"; // Table name
// Connect to server and select databse.
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");
// Define $myusername and $mypassword
$myusername=$_POST['myusername'];
$mypassword = $bcrypt->verify($_POST['mypassword'], "$Hash");
// To protect MySQL injection (more detail about MySQL injection)
$myusername = stripslashes($myusername);
$myusername = mysql_real_escape_string($myusername);
$sql="SELECT * FROM $tbl_name WHERE user_name='$myusername' and password='$mypassword'";
$result=mysql_query($sql);
// Mysql_num_row is counting table row
$count=mysql_num_rows($result);
// If result matched $myusername and $mypassword, table row must be 1 row
if($count==1){
// Register $myusername, $mypassword and redirect to file "login_success.php"
$_SESSION['myusername'] = $myusername;
session_is_registered("myusername");
session_is_registered("mypassword");
header("location:login_success.php");
}
else {
echo "Wrong Username or Password";
}
ob_end_flush();
?>
main_login.php：
<html>
<head>
<title> Welcome</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<LINK href="CLL.css" rel="stylesheet" type="text/css">
</head>
<body>
<table width="300" border="0" align="center" cellpadding="0" cellspacing="1">
<tr>
<form name="form1" method="post" action="check_login.php">
<td>
<table width="100%" border="0" cellpadding="3" cellspacing="1">
<tr>
<td colspan="3"><strong>Member Login </strong></td>
</tr>
<tr>
<td width="78">Username</td>
<td width="6">:</td>
<td width="294"><input name="myusername" type="text" id="myusername"></td>
</tr>
<tr>
<td>Password</td>
<td>:</td>
<td><input name="mypassword" type="text" id="mypassword"></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td><input type="submit" name="Submit" value="Login"></td>
</tr>
</table>
</td>
</form>
</tr>
</table>
<?php $_SESSION['myusername'];?>
</body>
</html>
登录_成功.php：
<?php
session_start();
session_is_registered(myusername);
$userCurrent = $_SESSION['myusername'];
$host="localhost"; // Host name
$username="user"; // Mysql username
$password="XXXXX"; // Mysql password
$db_name="DB"; // Database name
$tbl_name="CLL_users"; // Table name
date_default_timezone_set('America/Chicago');
$dateCreated = date('m/d/Y h:i:s a', time());
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");
$sql="UPDATE CLL_users SET last_login= '$dateCreated' WHERE user_name= '$userCurrent'";
$result=mysql_query($sql);
if(!session_is_registered(myusername)){
header("location:main_login.php");
}
?>
<html>
<head>
<title> Welcome</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<LINK href="CLL.css" rel="stylesheet" type="text/css">
</head>
<body>
<?php echo $userCurrent ?>
<p>Login Successful</p>
</body>
</html>
函数.php：
<?php
class Bcrypt {
private $rounds;
public function __construct($rounds = 12) {
if(CRYPT_BLOWFISH != 1) {
throw new Exception("bcrypt not supported in this installation. See http://php.net/crypt");
}
$this->rounds = $rounds;
}
public function hash($input) {
$hash = crypt($input, $this->getSalt());
if(strlen($hash) > 13)
return $hash;
return false;
}
public function verify($input, $existingHash) {
$hash = crypt($input, $existingHash);
return $hash === $existingHash;
}
private function getSalt() {
$salt = sprintf('$2a$%02d$', $this->rounds);
$bytes = $this->getRandomBytes(16);
$salt .= $this->encodeBytes($bytes);
return $salt;
}
private $randomState;
private function getRandomBytes($count) {
$bytes = '';
if(function_exists('openssl_random_pseudo_bytes') &&
(strtoupper(substr(PHP_OS, 0, 3)) !== 'WIN')) { // OpenSSL slow on Win
$bytes = openssl_random_pseudo_bytes($count);
}
if($bytes === '' && is_readable('/dev/urandom') &&
($hRand = @fopen('/dev/urandom', 'rb')) !== FALSE) {
$bytes = fread($hRand, $count);
fclose($hRand);
}
if(strlen($bytes) < $count) {
$bytes = '';
if($this->randomState === null) {
$this->randomState = microtime();
if(function_exists('getmypid')) {
$this->randomState .= getmypid();
}
}
for($i = 0; $i < $count; $i += 16) {
$this->randomState = md5(microtime() . $this->randomState);
if (PHP_VERSION >= '5') {
$bytes .= md5($this->randomState, true);
} else {
$bytes .= pack('H*', md5($this->randomState));
}
}
$bytes = substr($bytes, 0, $count);
}
return $bytes;
}
private function encodeBytes($input) {
// The following is code from the PHP Password Hashing Framework
$itoa64 = './ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
$output = '';
$i = 0;
do {
$c1 = ord($input[$i++]);
$output .= $itoa64[$c1 >> 2];
$c1 = ($c1 & 0x03) << 4;
if ($i >= 16) {
$output .= $itoa64[$c1];
break;
}
$c2 = ord($input[$i++]);
$c1 |= $c2 >> 4;
$output .= $itoa64[$c1];
$c1 = ($c2 & 0x0f) << 2;
$c2 = ord($input[$i++]);
$c1 |= $c2 >> 6;
$output .= $itoa64[$c1];
$output .= $itoa64[$c2 & 0x3f];
} while (1);
return $output;
}
}
function valid_email($email) {
return filter_var($email, FILTER_VALIDATE_EMAIL);
}
?>