From 483cdffeb8beab7d43c39e9d46a20bad03ff56ad Mon Sep 17 00:00:00 2001
From: Max <msuraev@sysmocom.de>
Date: Mon, 28 Aug 2017 10:38:59 +0200
Subject: Add define for supported a5 key length limit

Change-Id: I8ed0f1dbc31aaff22a685ceb3bd2f8db4d2f34fd
---
 include/osmocom/crypt/auth.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'include')

diff --git a/include/osmocom/crypt/auth.h b/include/osmocom/crypt/auth.h
index 6d2c783d..2f2a8d33 100644
--- a/include/osmocom/crypt/auth.h
+++ b/include/osmocom/crypt/auth.h
@@ -8,6 +8,8 @@
 
 #include <osmocom/core/linuxlist.h>
 
+#define OSMO_A5_MAX_KEY_LEN_BYTES (128/8)
+
 /*! Authentication Type (GSM/UMTS) */
 enum osmo_sub_auth_type {
 	OSMO_AUTH_TYPE_NONE	= 0x00,
@@ -42,7 +44,7 @@ struct osmo_sub_auth_data {
 			uint64_t sqn_ms; /*!< sqn from AUTS (output value only) */
 		} umts;
 		struct {
-			uint8_t ki[16];	/*!< secret key */
+			uint8_t ki[OSMO_A5_MAX_KEY_LEN_BYTES];	/*!< secret key */
 		} gsm;
 	} u;
 };
-- 
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