diff options
Diffstat (limited to 'src/shared/libosmocore/include/osmocom/gsm/a5.h')
| -rw-r--r-- | src/shared/libosmocore/include/osmocom/gsm/a5.h | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/src/shared/libosmocore/include/osmocom/gsm/a5.h b/src/shared/libosmocore/include/osmocom/gsm/a5.h index 2c630e5f..7e6a17c4 100644 --- a/src/shared/libosmocore/include/osmocom/gsm/a5.h +++ b/src/shared/libosmocore/include/osmocom/gsm/a5.h @@ -27,6 +27,18 @@ #include <osmocom/core/bits.h> +/*! \defgroup a5 GSM A5 ciphering algorithm + * @{ + */ + +/*! \file gsm/a5.h + * \brief Osmocom GSM A5 ciphering algorithm header + */ + +/*! \brief Converts a frame number into the 22 bit number used in A5/x + * \param[in] fn The true framenumber + * \return 22 bit word + */ static inline uint32_t osmo_a5_fn_count(uint32_t fn) { @@ -42,8 +54,10 @@ osmo_a5_fn_count(uint32_t fn) * - fn is the _real_ GSM frame number. * (converted internally to fn_count) */ -void osmo_a5(int n, uint8_t *key, uint32_t fn, ubit_t *dl, ubit_t *ul); -void osmo_a5_1(uint8_t *key, uint32_t fn, ubit_t *dl, ubit_t *ul); -void osmo_a5_2(uint8_t *key, uint32_t fn, ubit_t *dl, ubit_t *ul); +void 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); + +/*! }@ */ #endif /* __OSMO_A5_H__ */ |