[将Bcrypt与phpto哈希密码结合使用不起作用
Posted
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了[将Bcrypt与phpto哈希密码结合使用不起作用相关的知识，希望对你有一定的参考价值。
我正在将Bcrypt与php一起使用以获取安全的哈希密码以提交给数据库在注册中，密码会被散列，但在登录时，系统显示2个密码不匹配的任何人都可以帮助我????????
我只需要来自password.php文件
- password_hash函数
- 密码验证功能
password.php
<?php
/**
* A Compatibility library with PHP 5.5's simplified password hashing API.
*
* @author Anthony Ferrara <ircmaxell@php.net>
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @copyright 2012 The Authors
*/
if (!defined('PASSWORD_DEFAULT')) {
define('PASSWORD_BCRYPT', 1);
define('PASSWORD_DEFAULT', PASSWORD_BCRYPT);
/**
* Hash the password using the specified algorithm
*
* @param string $password The password to hash
* @param int $algo The algorithm to use (Defined by PASSWORD_* constants)
* @param array $options The options for the algorithm to use
*
* @return string|false The hashed password, or false on error.
*/
function password_hash($password, $algo, array $options = array()) {
if (!function_exists('crypt')) {
trigger_error("Crypt must be loaded for password_hash to function", E_USER_WARNING);
return null;
}
if (!is_string($password)) {
trigger_error("password_hash(): Password must be a string", E_USER_WARNING);
return null;
}
if (!is_int($algo)) {
trigger_error("password_hash() expects parameter 2 to be long, " . gettype($algo) . " given", E_USER_WARNING);
return null;
}
switch ($algo) {
case PASSWORD_BCRYPT:
// Note that this is a C constant, but not exposed to PHP, so we don't define it here.
$cost = 10;
if (isset($options['cost'])) {
$cost = $options['cost'];
if ($cost < 4 || $cost > 31) {
trigger_error(sprintf("password_hash(): Invalid bcrypt cost parameter specified: %d", $cost), E_USER_WARNING);
return null;
}
}
// The length of salt to generate
$raw_salt_len = 16;
// The length required in the final serialization
$required_salt_len = 22;
$hash_format = sprintf("$2y$%02d$", $cost);
break;
default:
trigger_error(sprintf("password_hash(): Unknown password hashing algorithm: %s", $algo), E_USER_WARNING);
return null;
}
if (isset($options['salt'])) {
switch (gettype($options['salt'])) {
case 'NULL':
case 'boolean':
case 'integer':
case 'double':
case 'string':
$salt = (string) $options['salt'];
break;
case 'object':
if (method_exists($options['salt'], '__tostring')) {
$salt = (string) $options['salt'];
break;
}
case 'array':
case 'resource':
default:
trigger_error('password_hash(): Non-string salt parameter supplied', E_USER_WARNING);
return null;
}
if (strlen($salt) < $required_salt_len) {
trigger_error(sprintf("password_hash(): Provided salt is too short: %d expecting %d", strlen($salt), $required_salt_len), E_USER_WARNING);
return null;
} elseif (0 == preg_match('#^[a-zA-Z0-9./]+$#D', $salt)) {
$salt = str_replace('+', '.', base64_encode($salt));
}
} else {
$buffer = '';
$buffer_valid = false;
if (function_exists('mcrypt_create_iv') && !defined('PHALANGER')) {
$buffer = mcrypt_create_iv($raw_salt_len, MCRYPT_DEV_URANDOM);
if ($buffer) {
$buffer_valid = true;
}
}
if (!$buffer_valid && function_exists('openssl_random_pseudo_bytes')) {
$buffer = openssl_random_pseudo_bytes($raw_salt_len);
if ($buffer) {
$buffer_valid = true;
}
}
if (!$buffer_valid && is_readable('/dev/urandom')) {
$f = fopen('/dev/urandom', 'r');
$read = strlen($buffer);
while ($read < $raw_salt_len) {
$buffer .= fread($f, $raw_salt_len - $read);
$read = strlen($buffer);
}
fclose($f);
if ($read >= $raw_salt_len) {
$buffer_valid = true;
}
}
if (!$buffer_valid || strlen($buffer) < $raw_salt_len) {
$bl = strlen($buffer);
for ($i = 0; $i < $raw_salt_len; $i++) {
if ($i < $bl) {
$buffer[$i] = $buffer[$i] ^ chr(mt_rand(0, 255));
} else {
$buffer .= chr(mt_rand(0, 255));
}
}
}
$salt = str_replace('+', '.', base64_encode($buffer));
}
$salt = substr($salt, 0, $required_salt_len);
$hash = $hash_format . $salt;
$ret = crypt($password, $hash);
if (!is_string($ret) || strlen($ret) <= 13) {
return false;
}
return $ret;
}
/**
* Get information about the password hash. Returns an array of the information
* that was used to generate the password hash.
*
* array(
* 'algo' => 1,
* 'algoName' => 'bcrypt',
* 'options' => array(
* 'cost' => 10,
* ),
* )
*
* @param string $hash The password hash to extract info from
*
* @return array The array of information about the hash.
*/
function password_get_info($hash) {
$return = array(
'algo' => 0,
'algoName' => 'unknown',
'options' => array(),
);
if (substr($hash, 0, 4) == '$2y$' && strlen($hash) == 60) {
$return['algo'] = PASSWORD_BCRYPT;
$return['algoName'] = 'bcrypt';
list($cost) = sscanf($hash, "$2y$%d$");
$return['options']['cost'] = $cost;
}
return $return;
}
/**
* Determine if the password hash needs to be rehashed according to the options provided
*
* If the answer is true, after validating the password using password_verify, rehash it.
*
* @param string $hash The hash to test
* @param int $algo The algorithm used for new password hashes
* @param array $options The options array passed to password_hash
*
* @return boolean True if the password needs to be rehashed.
*/
function password_needs_rehash($hash, $algo, array $options = array()) {
$info = password_get_info($hash);
if ($info['algo'] != $algo) {
return true;
}
switch ($algo) {
case PASSWORD_BCRYPT:
$cost = isset($options['cost']) ? $options['cost'] : 10;
if ($cost != $info['options']['cost']) {
return true;
}
break;
}
return false;
}
/**
* Verify a password against a hash using a timing attack resistant approach
*
* @param string $password The password to verify
* @param string $hash The hash to verify against
*
* @return boolean If the password matches the hash
*/
function password_verify($password, $hash) {
if (!function_exists('crypt')) {
trigger_error("Crypt must be loaded for password_verify to function", E_USER_WARNING);
return false;
}
$ret = crypt($password, $hash);
if (!is_string($ret) || strlen($ret) != strlen($hash) || strlen($ret) <= 13) {
return false;
}
$status = 0;
for ($i = 0; $i < strlen($ret); $i++) {
$status |= (ord($ret[$i]) ^ ord($hash[$i]));
}
return $status === 0;
}
}
register.php
require_once('include/password.php');
$hash = password_hash($pass1, PASSWORD_BCRYPT);
if(password_verify($pass1, $hash))
{
echo "matched";
}
echo "do not match";
//************Insert all the user's input to the database**************************//
$query = mysql_query("INSERT INTO user(user_name, first_name, last_name, governorate, district, village, birth_date, email_address, specialization, password, registered_date)VALUES('$username', '$firstname', '$lastname', '$governorate', '$district', '$village', '$bdate', '$email', '$specialization', '$hash', now())")or die("could not insert data");
login.php
//***********for hashing password***************************//
require_once('include/password.php');
$hash = password_hash($pass, PASSWORD_BCRYPT);
if(password_verify($pass, $hash))
{
echo "matched";
}
echo $hash;
$sql=mysql_query( "SELECT user_id, email_address, first_name, user_name FROM user WHERE email_address='$email'AND password= '$hash' LIMIT 1") or die("error in user table");
$login_check = mysql_num_rows($sql);
答案
您做错了。[创建新帐户时，您会从用户那里获得密码。您对它进行哈希处理并将该哈希存储到数据库中。此时无需检查密码是否已经与哈希匹配。
寄存器
require_once('include/password.php');
$hash = password_hash($pass1, PASSWORD_BCRYPT);
//************Insert all the user's input to the database**************************//
$query = mysql_query("INSERT INTO user (user_name, .... password, registered_date) VALUES('".mysql_real_escape_string($username)."', ... '".mysql_real_escape_string($hash)."', now())") or die("could not insert data");
[将字符串放入查询字符串时，请不要忘记转义所有字符串。我在上面的示例中为您添加了此代码。[登录时检查密码时，您从数据库中读取哈希，并使用此哈希和登录表单中当前提供的密码来调用verify函数：
登录
require_once('include/password.php');
$sql=mysql_query( "SELECT user_id, ... password FROM user WHERE email_address='".mysql_real_escape_string($email)."'") or die("error in user table");
$error = false;
if (mysql_num_rows($sql) == 0) { $error = true; // user not found - don't tell anyone this detail! }
if (mysql_num_rows($sql) > 1) { $error = true; // email addresses are not unique in your database - this should not happen!}
if (!$error) {
$user = mysql_fetch_assoc($sql);
if (password_verify($pass, $user['password']) {
$login=true;
} else {
$error = true; // Password is wrong - don't tell anyone this detail!
}
}
这并不难，只需看一下文档：https://github.com/ircmaxell/password_compat[当您在使用它时：实施密码的重新哈希处理几乎没有开销。
另一答案
也许您会收到类似“ password_hash（）期望参数2 ...”的警告。在PHP版本7.4.1中，我在密码类中注释了以下几行：if (!is_int($algo)) {
trigger_error("password_hash() expects parameter 2 to be long, " . gettype($algo) . " given", E_USER_WARNING);
return null;
}
...并且我的代码有效！
以上是关于[将Bcrypt与phpto哈希密码结合使用不起作用的主要内容，如果未能解决你的问题，请参考以下文章