我正在使用带有php的Bcrypt来获取安全的哈希密码以提交到数据库 在注册密码得到哈希但在登录系统显示2密码不匹配任何人都可以帮助我????????
我只需要从password.php文件
<?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;
}
}
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");
//***********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 0 :(得分：2)
你做错了。
创建新帐户时，您会从用户那里获得密码。您将其哈希并将该哈希存储到数据库中。此时无需检查密码是否已与哈希匹配。
注册
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");
将它们放入查询字符串时，请永远忘记转义所有字符串。我在上面的例子中为你添加了这个。
在登录时检查密码时，您从数据库中读取哈希值并使用此哈希值和登录表单中当前给定的密码调用验证函数：
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 {
$error = true; // Password is wrong - don't tell anyone this detail!
}
}
这不难获得，只需查看文档：{{3}}
当你处于这种状态时：实施密码重新散列的开销非常小。
答案 1 :(得分：0)
如果收到诸如“ password_hash（）期望参数2 ...”之类的警告，则在调用password_hash（）函数时，可以尝试注释以下几行：
if (!is_int($algo)) {
trigger_error("password_hash() expects parameter 2 to be long, " . gettype($algo) . " given", E_USER_WARNING);
return null;
}
我在密码类中完成了此操作，该功能正常工作！我的PHP环境是PHP版本7.4.1。