我有一个网站，我正在使用 bcrypt 编写注册/登录系统。我已成功将注册详细信息和哈希密码插入数据库中。我的问题是如何使用此哈希密码对用户进行身份验证。以下是我使用的代码：
注册动作：
<? ob_start();//Start buffer output ?>
<html>
<head>
<title>MySite: Registration Action</title>
</head>
<font face="arial">
<?php
session_start();
if(isset($_POST["captcha"])&&$_POST["captcha"]!=""&&$_SESSION["code"]==$_POST["captcha"])
{
//echo "Correct Code Entered";
//Do req stuff
$host="host"; // Host name
$username="username"; // Mysql username
$password="password"; // Mysql password
$db_name="db"; // Database name
$tbl_name="tbl"; // Table name
// Connect to server and select database.
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");
// Get values from form
$myusername=mysql_real_escape_string($_POST['myusername']);
$mypassword=mysql_real_escape_string($_POST['mypassword']);
$myemail=mysql_real_escape_string($_POST['myemail']);
$mysecrquest=mysql_real_escape_string($_POST['mysecrquest']);
$mysecransw=mysql_real_escape_string($_POST['mysecransw']);
$mypassword_rep=mysql_real_escape_string($_POST['mypassword_rep']);
$myemail_rep=mysql_real_escape_string($_POST['myemail_rep']);
$mysecransw_rep=mysql_real_escape_string($_POST['mysecransw_rep']);
$salt = '$2a$18$' . substr(md5(uniqid(rand(), true)), 0, 22);
$encpass = crypt($mypassword, $salt);
//validate input
if (( !empty($myusername) && !empty($mypassword) && !empty($myemail) && !empty($mysecrquest) && !empty($mysecransw) )
&& (($mypassword_rep==$mypassword)&&($myemail_rep==$myemail)&&($mysecransw_rep==$mysecransw)))
{
// Insert data into mysql
$sql="INSERT INTO $tbl_name(username, salt, password, email, secrquest, secransw)VALUES('$myusername', '$salt', '$encpass', '$myemail', '$mysecrquest',
'$mysecransw')";
$result=mysql_query($sql);
// if successfully insert data into database, displays message "Successful".
if($result){
echo "<center><font color='green'>Congratulations! Your registration was Successful</font></center>";
echo "<BR>";
echo "<center><a href='somepage.php'>Somepage</a></center>";
}
}
else {
echo "<center><font color='red'>You have one or more invalid entries: Your Registration was not successful</font></center>";
echo "<br>";
echo "<center><a href='regpage.php'>Back</a></center>";
}
}
else {
echo "<center><font color='red'>Wrong Captcha: Your Registration was not successful</font></center>";
echo "<br>";
echo "<center><a href='regpage.php'>Back</a></center>";
}
?>
<?php
// close connection
//mysql_close();
?>
</font>
</html>
<? ob_flush();//Flush buffer output ?>
登录操作：
<? ob_start();//Start buffer output ?>
<html>
<head>
<title>MySite: Login Action</title>
</head>
<font face="arial">
<?php
session_start();
if(isset($_POST["captcha"])&&$_POST["captcha"]!=""&&$_SESSION["code"]==$_POST["captcha"])
{
// echo "<font color='green'>Correct Code Entered</font>";
//Do req stuff
$host="host"; // Host name
$username="username"; // Mysql username
$password="password"; // Mysql password
$db_name="db"; // Database name
$tbl_name="tblx"; // Table name
$tbl_name2="tbl"; // Table name 2
// Connect to server and select database.
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");
// Get values from form
$myusername=mysql_real_escape_string($_POST['myusername']);
$mypassword=mysql_real_escape_string($_POST['mypassword']);
// Validate the login
$sql2="SELECT * FROM $tbl_name2 WHERE username='$myusername'";
$result2=mysql_query($sql2);
$row=mysql_fetch_assoc($result2);
//$count=mysql_num_rows($result2);
// If result matched $myusername and $mypassword, table row must be 1 row
//if($count==1)
//$salt = '$2a$18$' . substr(md5(uniqid(rand(), true)), 0, 22);
$encpass = crypt($mypassword, $salt);
if ($encpass == $row['password'])
{
session_start();
$_SESSION['myusername'] = $myusername;
header ("Location: memberspage.php");
}
else {
echo "<center><font color='red'>Invalid Login Details. Not Logged In.</font></center>";
echo "<br>";
echo "<center><font color='red'>Please go back and try again.</font></center>";
echo "<br>";
echo "<center><a href='loginpage.php'>Back</a></center>";
}
}
else {
echo "<center><font color='red'>Wrong Captcha. Not Logged In.</font></center>";
echo "<br>";
echo "<center><font color='red'>Please go back and try again.</font></center>";
echo "<br>";
echo "<center><a href='loginpage.php'>Back</a></center>";
}
?>
<?php
// close connection
//mysql_close();
?>
</font>
</html>
<? ob_flush();//Flush buffer output ?>
任何帮助表示赞赏。谢谢。
