diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gsm/gprs_cipher_core.c | 23 | ||||
| -rw-r--r-- | src/gsm/libosmogsm.map | 1 |
2 files changed, 22 insertions, 2 deletions
diff --git a/src/gsm/gprs_cipher_core.c b/src/gsm/gprs_cipher_core.c index b9a22a10..e4fac04b 100644 --- a/src/gsm/gprs_cipher_core.c +++ b/src/gsm/gprs_cipher_core.c @@ -53,12 +53,14 @@ int gprs_cipher_register(struct gprs_cipher_impl *ciph) int gprs_cipher_load(const char *path) { /* load all plugins available from path */ - return osmo_plugin_load_all(path); + if (path) + return osmo_plugin_load_all(path); + return 0; } /* function to be called by core code */ int gprs_cipher_run(uint8_t *out, uint16_t len, enum gprs_ciph_algo algo, - uint64_t kc, uint32_t iv, enum gprs_cipher_direction dir) + uint8_t *kc, uint32_t iv, enum gprs_cipher_direction dir) { if (algo >= ARRAY_SIZE(selected_ciphers)) return -ERANGE; @@ -73,6 +75,23 @@ int gprs_cipher_run(uint8_t *out, uint16_t len, enum gprs_ciph_algo algo, return selected_ciphers[algo]->run(out, len, kc, iv, dir); } +/*! \brief Obtain key lenght for given GPRS cipher + * \param[in] algo Enum representive GPRS cipher + * \returns unsigned integer key length for supported algorithms, + * for GEA0 and unknown ciphers will return 0 + */ +unsigned gprs_cipher_key_length(enum gprs_ciph_algo algo) +{ + switch (algo) { + case GPRS_ALGO_GEA0: return 0; + case GPRS_ALGO_GEA1: + case GPRS_ALGO_GEA2: + case GPRS_ALGO_GEA3: return 8; + case GPRS_ALGO_GEA4: return 16; + default: return 0; + } +} + int gprs_cipher_supported(enum gprs_ciph_algo algo) { if (algo >= ARRAY_SIZE(selected_ciphers)) diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map index 6886a6c0..a5267565 100644 --- a/src/gsm/libosmogsm.map +++ b/src/gsm/libosmogsm.map @@ -40,6 +40,7 @@ gprs_cipher_load; gprs_cipher_register; gprs_cipher_run; gprs_cipher_supported; +gprs_cipher_key_length; gprs_tlli_type; gprs_tmsi2tlli; |