recreate project

app/Helpers/pbkdf2_helper.php

@@ -0,0 +1,39 @@
+<?php
+
+if (!function_exists('pbkdf2_hash')) {
+    function pbkdf2_hash(string $password, string $algo = 'sha256', int $iterations = 100000, int $length = 64): string
+    {
+        $salt = random_bytes(16); // 16 bytes = 32 hex characters
+        $salt_hex = bin2hex($salt);
+
+        $derived_key = hash_pbkdf2($algo, $password, $salt, $iterations, $length, true);
+        $derived_key_hex = bin2hex($derived_key);
+
+        return "{$algo}\${$iterations}\${$salt_hex}\${$derived_key_hex}";
+    }
+}
+
+if (!function_exists('pbkdf2_verify')) {
+    function pbkdf2_verify(string $password, string $stored_hash): bool
+    {
+        $parts = explode('$', $stored_hash);
+
+        if (count($parts) !== 4) {
+            return false; // Invalid format
+        }
+
+        [$algo, $iterations, $salt_hex, $derived_key_hex] = $parts;
+
+        if (strlen($salt_hex) % 2 !== 0 || strlen($derived_key_hex) % 2 !== 0) {
+            return false; // Not valid hex
+        }
+
+        $salt = hex2bin($salt_hex);
+        $derived_key = hex2bin($derived_key_hex);
+        $length = strlen($derived_key);
+
+        $new_derived_key = hash_pbkdf2($algo, $password, $salt, (int)$iterations, $length, true);
+
+        return hash_equals($derived_key, $new_derived_key);
+    }
+}