From 1dfed264e9436367fb4a375cd541c11d41f9b82b Mon Sep 17 00:00:00 2001
From: 0xalivecow <mail@ta-lotz.de>
Date: Sun, 3 Nov 2024 20:15:55 +0100
Subject: [PATCH] fix: add padding to empty ad case

---
 src/utils/ciphers.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/utils/ciphers.rs b/src/utils/ciphers.rs
index 7fb6e63..56b4ead 100644
--- a/src/utils/ciphers.rs
+++ b/src/utils/ciphers.rs
@@ -334,7 +334,7 @@ pub fn ghash(
     eprintln!("{:?}", (ad.len() % 16) as u8);
     eprintln!("{:001X?}", ad);
 
-    if ad.len() % 16 != 0 {
+    if ad.len() % 16 != 0 || ad.is_empty() {
         ad.append(vec![0u8; 16 - (ad.len() % 16)].as_mut());
     }