Add define for supported a5 key length limit
Change-Id: I8ed0f1dbc31aaff22a685ceb3bd2f8db4d2f34fd
diff --git a/include/osmocom/crypt/auth.h b/include/osmocom/crypt/auth.h
index 6d2c783..2f2a8d3 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 @@
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;
};