From 0089fbcf0a7bf3ba92fa2ba657c5e7d70e395ed7 Mon Sep 17 00:00:00 2001
From: Michael Vetter <jubalh@iodoru.org>
Date: Mon, 17 Feb 2020 14:04:24 +0100
Subject: [PATCH] omemo: switch to 12 byte IV

We decrypt both 12 and 16 bytes.
And send 12 instead of 16 bytes now.

Close https://github.com/profanity-im/profanity/issues/1272
---
 src/omemo/crypto.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/omemo/crypto.h b/src/omemo/crypto.h
index 4bd6258b..d0cfdd05 100644
--- a/src/omemo/crypto.h
+++ b/src/omemo/crypto.h
@@ -35,7 +35,7 @@
 #include <signal/signal_protocol_types.h>
 
 #define AES128_GCM_KEY_LENGTH 16
-#define AES128_GCM_IV_LENGTH 16
+#define AES128_GCM_IV_LENGTH 12
 #define AES128_GCM_TAG_LENGTH 16
 
 int omemo_crypto_init(void);