From d13327203969666f3428a5e3c3331a7713e1cfea Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bruno=20Ryb=C3=A1rsky?= <bruno@brn.systems>
Date: Tue, 2 Sep 2025 22:11:53 +0200
Subject: [PATCH] more safe

---
 main/main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/main/main.c b/main/main.c
index 91bbe6e..cd9edec 100644
--- a/main/main.c
+++ b/main/main.c
@@ -190,8 +190,8 @@ GroupTextMessage decodeGroupMessage(FrameStruct frame) {
 
   size_t plaintextLen = 0;
 
-  mac_then_decrypt(aes_key, frame.payload + index, frame.payloadLen - index, tmp, &plaintextLen);
-  if (plaintextLen == 0) {
+  unsigned char res = mac_then_decrypt(aes_key, frame.payload + index, frame.payloadLen - index, tmp, &plaintextLen);
+  if (plaintextLen == 0 || res != 0) {
     printf("error decrypting");
   }