админка

app/Services/AzerothCoreSrpService.php

@@ -0,0 +1,67 @@
+<?php
+
+namespace App\Services;
+
+use Brick\Math\BigInteger;
+
+class AzerothCoreSrpService
+{
+    private const string MODULUS_HEX = '894B645E89E1535BBDAD5B8B290650530801B18EBFBF5E8FAB3C82872A3E9BB7';
+
+    private const int GENERATOR = 7;
+
+    private const int BYTE_LENGTH = 32;
+
+    public function normalizeUsername(string $username): string
+    {
+        return strtoupper(trim($username));
+    }
+
+    public function normalizeEmail(string $email): string
+    {
+        return strtoupper(trim($email));
+    }
+
+    public function normalizePassword(string $password): string
+    {
+        return strtoupper($password);
+    }
+
+    /**
+     * @return array{0: string, 1: string}
+     */
+    public function makeRegistrationData(string $username, string $password): array
+    {
+        $saltHex = strtoupper(bin2hex(random_bytes(self::BYTE_LENGTH)));
+
+        return [$saltHex, $this->makeVerifierHex($username, $password, $saltHex)];
+    }
+
+    public function makeVerifierHex(string $username, string $password, string $saltHex): string
+    {
+        $normalizedUsername = $this->normalizeUsername($username);
+        $normalizedPassword = $this->normalizePassword($password);
+        $salt = hex2bin($saltHex);
+
+        if ($salt === false) {
+            throw new \InvalidArgumentException('Invalid salt hex provided.');
+        }
+
+        $innerDigest = hash('sha1', sprintf('%s:%s', $normalizedUsername, $normalizedPassword), true);
+        $xDigest = hash('sha1', $salt.$innerDigest, true);
+        $modulus = BigInteger::fromBase(self::MODULUS_HEX, 16);
+        $exponent = BigInteger::fromBytes(strrev($xDigest), false);
+        $verifier = BigInteger::of(self::GENERATOR)->modPow($exponent, $modulus);
+        $verifierBytes = strrev(str_pad($verifier->toBytes(false), self::BYTE_LENGTH, "\0", STR_PAD_LEFT));
+
+        return strtoupper(bin2hex($verifierBytes));
+    }
+
+    public function credentialsMatch(string $username, string $password, string $saltHex, string $verifierHex): bool
+    {
+        return hash_equals(
+            strtoupper($verifierHex),
+            $this->makeVerifierHex($username, $password, $saltHex),
+        );
+    }
+}