用純 php 更新 wordpress 但用戶密碼需要更改

Question

我想將我的小網站更新為純 PHP。 但是，用戶將嘗試使用他們的舊密碼登錄。

但是，我不能再使用 wordpress 認證 function 了。 怎么樣，我能做到嗎？

如何驗證我的用戶？ 我想，我需要弄清楚 wordpress 的散列和加鹽過程。 我在哪里可以找到？

Answer 1

WordPress 的默認散列機制是 MD5。 用戶數據存儲在 db 中的表wp_users中。

因此，您首先要考慮的是，如何存儲當前網站（非 WordPress）的密碼。 如您所知，PHP 具有內置的md5() function。

如果您以純文本格式存儲它（根本不推薦），那么您可以簡單地遍歷當前數據庫中的這些密碼並將它們插入wp_users表（在您的新 WordPress 站點中），將密碼傳遞給md5() function。

如果您以加密形式存儲它，即。 可以稍后解密（不推薦），然后您也可以遍歷密碼，解密它，然后像上面的方式插入到wp_users表中。

但是，如果您使用的是單向加密（哈希），並且它是 MD5，那么您可以立即將存儲在當前數據庫中的哈希密碼插入 WordPress 數據庫，它應該可以工作！

但如果不是MD5，那將是一項艱巨的任務。 在這種情況下，我建議在 WordPress db 中插入用戶數據，並在user_pass字段中插入臨時隨機密碼。 然后向用戶發送帶有鏈接的 email 以編程方式重置密碼。 ZFDE31686817FE502902586D51B35861Z具有內置的ZC1C1C1C1C425268E68385D1AB5074C174C174C174C174F14F174C174F14Z稱為Get_pass_pass_passet_key （）

Answer 2

我找到了我正在尋找的確切解決方案。 如果你遇到同樣的問題，我把它放在這里。

我只想用我的 wordpress 站點 hash 驗證我的密碼。 干得好！！

您想使用 Core PHP 來做到這一點，對吧？ 這是給你的代碼：首先你需要添加一個類： -> 只需從wp-includes/class-phpass.php復制它 -> 不用擔心。 它寫在核心 PHP 中。

class PasswordHash {
    var $itoa64;
    var $iteration_count_log2;
    var $portable_hashes;
    var $random_state;

    /**
     * PHP5 constructor.
     */
    function __construct( $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() . uniqid(rand(), TRUE); // removed getmypid() for compatibility reasons
    }

    /**
     * PHP4 constructor.
     */
    public function PasswordHash( $iteration_count_log2, $portable_hashes ) {
        self::__construct( $iteration_count_log2, $portable_hashes );
    }

    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)
    {
        if ( strlen( $password ) > 4096 ) {
            return '*';
        }

        $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)
    {
        if ( strlen( $password ) > 4096 ) {
            return false;
        }

        $hash = $this->crypt_private($password, $stored_hash);
        if ($hash[0] == '*')
            $hash = crypt($password, $stored_hash);

        return $hash === $stored_hash;
    }
}

你快完成了。

$password = 'binary1001';//password you want to verify

$hasher = new PasswordHash(8, TRUE);
$passnya = '$P$BFG8I1k171qgRKqZvj0K3tn3bBSrsW/';//hash of that password from wp db


// compare plain password with hashed password
if ($hasher->CheckPassword( $password, $passnya )){
    echo "MATCHED";
} else {
    echo "NO MATCHED";
}

我在這里反復試驗。 現在，是時候進入正題了。 快樂編碼！！！