这很奇怪。共享服务器上一切正常，但用户注册时给出的密码完全不同。例如，这是关于所有散列密码在共享服务器上的 phpmyadmin 中的样子：
$P$BFLZVVoJlzQpwA3STCCmcXy.s/bRQa0
这就是它们在专用服务器上的创建方式：
$2a$08$Kdk3Zg11Va0LvAWTDacLYeqgKbojUY2Tuqtg4QXuhx/
它更长，看起来不同。我检查了很多次。在两台服务器上上传相同的文件。这个问题的结果是用户注册后无法登录，就好像他们输错了密码一样。
在注册时，这是如何完成散列的：
$hasher = new PasswordHash(8, false);
$hash = $hasher->HashPassword($form_password1);
其中 $form_password1 是用户提供的密码。
我正在使用这个类来散列和检查密码：
class PasswordHash {
var $itoa64;
var $iteration_count_log2;
var $portable_hashes;
var $random_state;
function PasswordHash($iteration_count_log2, $portable_hashes)
{
$this->itoa64 = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
if ($iteration_count_log2 < 4 || $iteration_count_log2 > 31)
$iteration_count_log2 = 8;
$this->iteration_count_log2 = $iteration_count_log2;
$this->portable_hashes = $portable_hashes;
$this->random_state = microtime();
if (function_exists('getmypid'))
$this->random_state .= getmypid();
}
function get_random_bytes($count)
{
$output = '';
if (is_readable('/dev/urandom') &&
($fh = @fopen('/dev/urandom', 'rb'))) {
$output = fread($fh, $count);
fclose($fh);
}
if (strlen($output) < $count) {
$output = '';
for ($i = 0; $i < $count; $i += 16) {
$this->random_state =
md5(microtime() . $this->random_state);
$output .=
pack('H*', md5($this->random_state));
}
$output = substr($output, 0, $count);
}
return $output;
}
function encode64($input, $count)
{
$output = '';
$i = 0;
do {
$value = ord($input[$i++]);
$output .= $this->itoa64[$value & 0x3f];
if ($i < $count)
$value |= ord($input[$i]) << 8;
$output .= $this->itoa64[($value >> 6) & 0x3f];
if ($i++ >= $count)
break;
if ($i < $count)
$value |= ord($input[$i]) << 16;
$output .= $this->itoa64[($value >> 12) & 0x3f];
if ($i++ >= $count)
break;
$output .= $this->itoa64[($value >> 18) & 0x3f];
} while ($i < $count);
return $output;
}
function gensalt_private($input)
{
$output = '$P$';
$output .= $this->itoa64[min($this->iteration_count_log2 +
((PHP_VERSION >= '5') ? 5 : 3), 30)];
$output .= $this->encode64($input, 6);
return $output;
}
function crypt_private($password, $setting)
{
$output = '*0';
if (substr($setting, 0, 2) == $output)
$output = '*1';
$id = substr($setting, 0, 3);
# We use "$P$", phpBB3 uses "$H$" for the same thing
if ($id != '$P$' && $id != '$H$')
return $output;
$count_log2 = strpos($this->itoa64, $setting[3]);
if ($count_log2 < 7 || $count_log2 > 30)
return $output;
$count = 1 << $count_log2;
$salt = substr($setting, 4, 8);
if (strlen($salt) != 8)
return $output;
# We're kind of forced to use MD5 here since it's the only
# cryptographic primitive available in all versions of PHP
# currently in use. To implement our own low-level crypto
# in PHP would result in much worse performance and
# consequently in lower iteration counts and hashes that are
# quicker to crack (by non-PHP code).
if (PHP_VERSION >= '5') {
$hash = md5($salt . $password, TRUE);
do {
$hash = md5($hash . $password, TRUE);
} while (--$count);
} else {
$hash = pack('H*', md5($salt . $password));
do {
$hash = pack('H*', md5($hash . $password));
} while (--$count);
}
$output = substr($setting, 0, 12);
$output .= $this->encode64($hash, 16);
return $output;
}
function gensalt_extended($input)
{
$count_log2 = min($this->iteration_count_log2 + 8, 24);
# This should be odd to not reveal weak DES keys, and the
# maximum valid value is (2**24 - 1) which is odd anyway.
$count = (1 << $count_log2) - 1;
$output = '_';
$output .= $this->itoa64[$count & 0x3f];
$output .= $this->itoa64[($count >> 6) & 0x3f];
$output .= $this->itoa64[($count >> 12) & 0x3f];
$output .= $this->itoa64[($count >> 18) & 0x3f];
$output .= $this->encode64($input, 3);
return $output;
}
function gensalt_blowfish($input)
{
# This one needs to use a different order of characters and a
# different encoding scheme from the one in encode64() above.
# We care because the last character in our encoded string will
# only represent 2 bits. While two known implementations of
# bcrypt will happily accept and correct a salt string which
# has the 4 unused bits set to non-zero, we do not want to take
# chances and we also do not want to waste an additional byte
# of entropy.
$itoa64 = './ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
$output = '$2a$';
$output .= chr(ord('0') + $this->iteration_count_log2 / 10);
$output .= chr(ord('0') + $this->iteration_count_log2 % 10);
$output .= '$';
$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 $output;
}
function HashPassword($password)
{
$random = '';
if (CRYPT_BLOWFISH == 1 && !$this->portable_hashes) {
$random = $this->get_random_bytes(16);
$hash =
crypt($password, $this->gensalt_blowfish($random));
if (strlen($hash) == 60)
return $hash;
}
if (CRYPT_EXT_DES == 1 && !$this->portable_hashes) {
if (strlen($random) < 3)
$random = $this->get_random_bytes(3);
$hash =
crypt($password, $this->gensalt_extended($random));
if (strlen($hash) == 20)
return $hash;
}
if (strlen($random) < 6)
$random = $this->get_random_bytes(6);
$hash =
$this->crypt_private($password,
$this->gensalt_private($random));
if (strlen($hash) == 34)
return $hash;
# Returning '*' on error is safe here, but would _not_ be safe
# in a crypt(3)-like function used _both_ for generating new
# hashes and for validating passwords against existing hashes.
return '*';
}
function CheckPassword($password, $stored_hash)
{
$hash = $this->crypt_private($password, $stored_hash);
if ($hash[0] == '*')
$hash = crypt($password, $stored_hash);
return $hash == $stored_hash;
}
}
这是用户尝试登录时的验证方式：
$number_of_rows=checkpass();
如果$number_of_rows==1然后用户已登录。
function checkpass()
{
global $username, $password, $database, $host;
try {
$conn = new PDO("mysql:host=$host;dbname=$database", $username, $password, array(PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8"));
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch(PDOException $e) {
echo 'ERROR: ' . $e->getMessage(); //Oops, something went wrong page
$goto = "error";
$server_dir = $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . '/';
header('Location: http://' . $server_dir . $goto);
exit();
}
echo $conn->errorCode();
echo $conn->errorInfo();
//LOGIN WITH HASH
$hasher = new PasswordHash(8, false);
$stored_hash="*";
$user = $_POST['username'];
$pass = $_POST['password'];
echo 'username: ' . $user . '<br>'; //myname
echo 'password: ' . $pass . '<br>'; //mypass
$error = '';
if ($user == '') $error = 'Wrong username or password!';
if ($pass == '') $error = 'Wrong username or password!';
try {
$stmt = $conn->prepare("SELECT PASSWORD, CONFIRMED FROM REG_USERS WHERE USERNAME=? LIMIT 1");
$stmt->execute(array($user));
$row = $stmt->fetchAll(PDO::FETCH_ASSOC);
echo '<br>most jon<br>';
foreach ($row as $row2)
{
$confirmed = $row2['CONFIRMED'];
$stored_hash = $row2['PASSWORD'];
echo '<br>stored_hash1: '.$stored_hash.'<br>';
}
} catch(PDOException $e) {
echo 'ERROR: ' . $e->getMessage(); //Oops, something went wrong page
$goto = "error";
$server_dir = $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . '/';
header('Location: http://' . $server_dir . $goto);
exit();
}
echo 'user: '.$user.'<br>';
echo 'savedpass: '.$stored_hash.'<br>';
echo 'pass: '.$pass.'<br>';
//exit();
$check = $hasher->CheckPassword($pass, $stored_hash);
if ($confirmed == 'Yes')
{
if ($check) {
echo 'passwords matched! show account dashboard or something';
return 1;
} else {
echo 'passwords didn’t match, show an error';
return 0;
}
}
else if ($confirmed == 'No')
{
return 2;
}
}
每次都返回 0。我现在处于死胡同，我不知道散列如何在两个不同的服务器中创建两种不同类型的散列密码。顺便说一句，这应该很常见，我完全可以使用不同的哈希值，但为什么我无法使用新注册登录？
注意：由于数据库最初是从一台服务器复制到另一台服务器的，因此我可以使用在共享服务器上创建的那些帐户登录。但是我无法登录到我在专用服务器上创建的那些。