From d2c9b7cb5aec4f3ddbce7dc8191f7253c257604f Mon Sep 17 00:00:00 2001
From: Cedric Roux <cedric.roux@eurecom.fr>
Date: Thu, 29 Apr 2021 15:15:18 +0200
Subject: [PATCH] nr pdcp: bugfix: reset integrity context

CMAC_Init has to be called between each usage of the cmac context.
---
 openair2/LAYER2/nr_pdcp/nr_pdcp_integrity_nia2.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/openair2/LAYER2/nr_pdcp/nr_pdcp_integrity_nia2.c b/openair2/LAYER2/nr_pdcp/nr_pdcp_integrity_nia2.c
index b2bb0662d6..86f0558611 100644
--- a/openair2/LAYER2/nr_pdcp/nr_pdcp_integrity_nia2.c
+++ b/openair2/LAYER2/nr_pdcp/nr_pdcp_integrity_nia2.c
@@ -63,6 +63,7 @@ void nr_pdcp_integrity_nia2_integrity(void *integrity_context,
    * (which is identical to 128-NIA2, see 33.501 D.3.1.3) */
   compute_t(t, count, bearer, direction);
 
+  CMAC_Init(ctx, NULL, 0, NULL, NULL);
   CMAC_Update(ctx, t, 8);
   CMAC_Update(ctx, buffer, length);
   CMAC_Final(ctx, mac, &maclen);