Changeset 6387 for trunk/wp-includes/compat.php

Timestamp:

12/16/2007 05:41:59 PM (17 years ago)

Author:

ryan

Message:

New secure cookie protocol. see #5367

File:

• trunk/wp-includes/compat.php (modified) (1 diff)

trunk/wp-includes/compat.php

@@ -148 +148 @@
 }
 
+if ( ! function_exists('hash_hmac') ):
+function hash_hmac($algo, $data, $key, $raw_output = false) {
+    $packs = array('md5' => 'H32', 'sha1' => 'H40');
+
+    if ( !isset($packs[$algo]) )
+        return false;
+
+    $pack = $packs[$algo];
+
+    if (strlen($key) > 64)
+        $key = pack($pack, $algo($key));
+    else if (strlen($key) < 64)
+        $key = str_pad($key, 64, chr(0));
+        
+    $ipad = (substr($key, 0, 64) ^ str_repeat(chr(0x36), 64));
+    $opad = (substr($key, 0, 64) ^ str_repeat(chr(0x5C), 64));
+
+    return $algo($opad . pack($pack, $algo($ipad . $data)));
+}
+endif;
+
 // Added in PHP 4.3.0?
 if (!defined('IMAGETYPE_GIF'))