diff options
| author | Vadim Yanitskiy <vyanitskiy@sysmocom.de> | 2021-11-29 00:58:02 +0300 |
|---|---|---|
| committer | Vadim Yanitskiy <vyanitskiy@sysmocom.de> | 2021-12-02 04:47:04 +0300 |
| commit | d405bad32db6d0af76be57d24e745ec5595bfda7 (patch) | |
| tree | 176c7351172ed50aa0ccf45268a45c95072087ba | |
| parent | 35db146e886463861d008a91b6ee25498e0b2eb4 (diff) | |
libmsc: ran_iu_make_security_mode_command(): clarify UIA mask
Change-Id: I7535d5ede5b22c61575a16d15927598e6137392a
| -rw-r--r-- | src/libmsc/ran_msg_iu.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/libmsc/ran_msg_iu.c b/src/libmsc/ran_msg_iu.c index 6705ab8be..cf57d350b 100644 --- a/src/libmsc/ran_msg_iu.c +++ b/src/libmsc/ran_msg_iu.c @@ -375,6 +375,8 @@ static struct msgb *ran_iu_make_rab_assignment(struct osmo_fsm_inst *caller_fi, static struct msgb *ran_iu_make_security_mode_command(struct osmo_fsm_inst *caller_fi, const struct ran_cipher_mode_command *cm) { + /* TODO: make the choice of available UIA algorithms configurable */ + const uint8_t uia_mask = (1 << OSMO_UTRAN_UIA1) | (1 << OSMO_UTRAN_UIA2); bool use_encryption = cm->utran.uea_encryption_mask > (1 << OSMO_UTRAN_UEA0); LOG_RAN_IU_ENC(caller_fi, LOGL_DEBUG, "Tx RANAP SECURITY MODE COMMAND to RNC, IK=%s, CK=%s\n", @@ -384,7 +386,9 @@ static struct msgb *ran_iu_make_security_mode_command(struct osmo_fsm_inst *call * in the case of A5? */ return ranap_new_msg_sec_mod_cmd2(cm->vec->ik, use_encryption ? cm->vec->ck : NULL, - RANAP_KeyStatus_new, 0x06, cm->utran.uea_encryption_mask); + RANAP_KeyStatus_new, + (uia_mask << 1), /* API treats LSB as UIA0 */ + cm->utran.uea_encryption_mask); } |