From f6a0b56c699514540fd0f793fc8acf23b479f978 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=9F=D0=B0=D0=B2=D0=B5=D0=BB?= <pashok9825@gmail.com>
Date: Mon, 28 Sep 2020 16:21:19 +0300
Subject: [PATCH] correct signature (should be uppercase)

---
 src/Service/RequestSigner.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Service/RequestSigner.php b/src/Service/RequestSigner.php
index e078a01..96a1fdc 100644
--- a/src/Service/RequestSigner.php
+++ b/src/Service/RequestSigner.php
@@ -60,10 +60,10 @@ class RequestSigner implements RequestSignerInterface
 
         switch ($request->signMethod) {
             case Constants::SIGN_TYPE_MD5:
-                $request->sign = md5($authenticator->getAppSecret() . $stringToBeSigned);
+                $request->sign = strtoupper(md5($authenticator->getAppSecret() . $stringToBeSigned));
                 break;
             case Constants::SIGN_TYPE_HMAC:
-                $request->sign = hash_hmac('md5', $stringToBeSigned, $authenticator->getAppSecret());
+                $request->sign = strtoupper(hash_hmac('md5', $stringToBeSigned, $authenticator->getAppSecret()));
                 break;
         }
     }