--- include/osmocom/gsm/a5.h | 2 +- src/gsm/a5.c | 8 ++++++-- 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/include/osmocom/gsm/a5.h b/include/osmocom/gsm/a5.h index 649dbab..f237c42 100644 --- a/include/osmocom/gsm/a5.h +++ b/include/osmocom/gsm/a5.h @@ -54,7 +54,7 @@ osmo_a5_fn_count(uint32_t fn) * - fn is the _real_ GSM frame number. * (converted internally to fn_count) */ -void osmo_a5(int n, const uint8_t *key, uint32_t fn, ubit_t *dl, ubit_t *ul); +unsigned osmo_a5(int n, const uint8_t *key, uint32_t fn, ubit_t *dl, ubit_t *ul); void osmo_a5_1(const uint8_t *key, uint32_t fn, ubit_t *dl, ubit_t *ul); void osmo_a5_2(const uint8_t *key, uint32_t fn, ubit_t *dl, ubit_t *ul);

diff --git a/src/gsm/a5.c b/src/gsm/a5.c index 356060a..68d703a 100644 --- a/src/gsm/a5.c +++ b/src/gsm/a5.c @@ -45,10 +45,10 @@ * \param[out] dl Pointer to array of ubits to return Downlink cipher stream * \param[out] ul Pointer to array of ubits to return Uplink cipher stream * - * Currently A5/[0-2] are supported. + * Currently A5/[0-2] are supported: 0 returned in this case, 1 s returned otherwise. * Either (or both) of dl/ul can be NULL if not needed. */ -void +unsigned osmo_a5(int n, const uint8_t *key, uint32_t fn, ubit_t *dl, ubit_t *ul) { switch (n) @@ -58,18 +58,22 @@ osmo_a5(int n, const uint8_t *key, uint32_t fn, ubit_t *dl, ubit_t *ul) memset(dl, 0x00, 114); if (ul) memset(ul, 0x00, 114); + return 1; break;

case 1: osmo_a5_1(key, fn, dl, ul); + return 1; break;

case 2: osmo_a5_2(key, fn, dl, ul); + return 1; break;

default: /* a5/[3..7] not supported here/yet */ + return 0; break; } }