Codebeispiel zum Knacken des PHP-Kontokennworts HashPassword-Verschlüsselungsmethode

PHP账号密码HashPassword加密方式破解代码实例

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(&#39;getmypid&#39;))
            $this->random_state .= getmypid();
    }

    function get_random_bytes($count)
    {
        $output = &#39;&#39;;
        if (is_readable(&#39;/dev/urandom&#39;) &&
                ($fh = @fopen(&#39;/dev/urandom&#39;, &#39;rb&#39;)))
        {
            $output = fread($fh, $count);
            fclose($fh);
        }

        if (strlen($output) < $count)
        {
            $output = &#39;&#39;;
            for ($i = 0; $i < $count; $i += 16)
            {
                $this->random_state = md5(microtime() . $this->random_state);
                $output .=
                        pack(&#39;H*&#39;, md5($this->random_state));
            }
            $output = substr($output, 0, $count);
        }
        return $output;
    }

    function encode64($input, $count)
    {
        $output = &#39;&#39;;
        $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)
    {
        $output = &#39;$P$&#39;;
        $output .= $this->itoa64[min($this->iteration_count_log2 +
                        ((PHP_VERSION >= &#39;5&#39;) ? 5 : 3), 30)];
        $output .= $this->encode64($input, 6);

        return $output;
    }

    function crypt_private($password, $setting)
    {
        $output = &#39;*0&#39;;
        if (substr($setting, 0, 2) == $output)
            $output = &#39;*1&#39;;

        $id = substr($setting, 0, 3);
        # We use "$P$", phpBB3 uses "$H$" for the same thing
        if ($id != &#39;$P$&#39; && $id != &#39;$H$&#39;)
            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&#39;re kind of forced to use MD5 here since it&#39;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 >= &#39;5&#39;)
        {
            $hash = md5($salt . $password, TRUE);
            do
            {
                $hash = md5($hash . $password, TRUE);
            } while (--$count);
        } else
        {
            $hash = pack(&#39;H*&#39;, md5($salt . $password));
            do
            {
                $hash = pack(&#39;H*&#39;, md5($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 = &#39;_&#39;;
        $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 = &#39;./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789&#39;;

        $output = &#39;$2a$&#39;;
        $output .= chr(ord(&#39;0&#39;) + $this->iteration_count_log2 / 10);
        $output .= chr(ord(&#39;0&#39;) + $this->iteration_count_log2 % 10);
        $output .= &#39;$&#39;;

        $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 = &#39;&#39;;

        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 &#39;*&#39; 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 &#39;*&#39;;
    }

    function CheckPassword($password, $stored_hash)
    {
        $hash = $this->crypt_private($password, $stored_hash);
        if ($hash[0] == &#39;*&#39;)
            $hash = crypt($password, $stored_hash);

        return $hash == $stored_hash;
    }

}
//demo test ok
$ps = new PasswordHash();
function GetPassLines($file)
{
    global $arrayCount;
    global $arrayPassList;
    if (file_exists($file) && is_readable($file))
    {
        if (!$fp = fopen($file, &#39;r&#39;))
        {
            return false;
        } else //read data
        {
            $loop = true;
            while ($loop)
            {
                $loop = !feof($fp);
                if ($loop)
                {
                    $stringLine=fgets($fp, 50);
                    $arrayPassList[$arrayCount] =trim($stringLine) ;
                    $arrayCount++;
                } else
                {
                    break;
                }
            }
            fclose($fp);
            return true;
        }
    } else
    {
        return false;
    }
}

$arrayPasswordHashValue = array(&#39;$2y$10$l2***************************************&#39;);
$bRet = GetPasslines(&#39;dic.txt&#39;);
if ($bRet)
{
    global $arrayCount;
    global $arrayPassList;
    for ($rows = 0; $rows < count($arrayPasswordHashValue); $rows++)
    {
        echo"row:{$rows}\n";
        for ($columns = 0; $columns < $arrayCount; $columns++)
        {
            $resultFind = $ps->CheckPassword($arrayPassList[$columns], $arrayPasswordHashValue[$rows]);
            if ($resultFind == 1)
            {
                echo "{$rows}:{$columns} " . "Success\n";
            } 
        }
    }
}
?>

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