Change in osmo-ttcn3-hacks[master]: bsc: add f_cipher_mode_bssmap_to_rr()

fixeria has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/27518 ) Change subject: bsc: add f_cipher_mode_bssmap_to_rr() ...................................................................... bsc: add f_cipher_mode_bssmap_to_rr() Change-Id: I6cc8cbed96f2838af1b0e41c5dfa6760c45d9ad1 Related: SYS#5838 --- M bsc/MSC_ConnectionHandler.ttcn 1 file changed, 20 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/18/27518/1 diff --git a/bsc/MSC_ConnectionHandler.ttcn b/bsc/MSC_ConnectionHandler.ttcn index a37a3b8..b0daf61 100644 --- a/bsc/MSC_ConnectionHandler.ttcn +++ b/bsc/MSC_ConnectionHandler.ttcn @@ -797,6 +797,26 @@ } } +/* Convert the cipher representation on BSSMAP to the one used on RR (3GPP TS 44.018) */ +function f_cipher_mode_bssmap_to_rr(OCT1 alg_bssmap) return BIT3 +{ + select (alg_bssmap) { + case ('01'O) /* A5/0 */ { return '000'B; } /* SC=0 */ + case ('02'O) /* A5/1 */ { return '000'B; } /* SC=1 */ + case ('04'O) /* A5/2 */ { return '001'B; } /* SC=1 */ + case ('08'O) /* A5/3 */ { return '010'B; } /* SC=1 */ + case ('10'O) /* A5/4 */ { return '011'B; } /* SC=1 */ + case ('20'O) /* A5/5 */ { return '100'B; } /* SC=1 */ + case ('40'O) /* A5/6 */ { return '101'B; } /* SC=1 */ + case ('80'O) /* A5/7 */ { return '110'B; } /* SC=1 */ + case else { + Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, "Unexpected Encryption Algorithm: " & + oct2str(alg_bssmap)); + return '000'B; + } + } +} + function f_verify_encr_info(RSL_Message rsl) runs on MSC_ConnHdlr { var RSL_IE_Body encr_info; var RSL_AlgId alg_rsl; -- To view, visit https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/27518 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-ttcn3-hacks Gerrit-Branch: master Gerrit-Change-Id: I6cc8cbed96f2838af1b0e41c5dfa6760c45d9ad1 Gerrit-Change-Number: 27518 Gerrit-PatchSet: 1 Gerrit-Owner: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-MessageType: newchange