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| author | Neels Hofmeyr <neels@hofmeyr.de> | 2017-12-18 03:12:01 +0100 |
|---|---|---|
| committer | Harald Welte <laforge@gnumonks.org> | 2017-12-18 23:05:24 +0000 |
| commit | aa84b71f0fe014156e90dde2f0c44694368dc034 (patch) | |
| tree | e89ecebe87b71d8735b92bb35b7a8d656c6d516c /src/utils.c | |
| parent | d589f1dcfddb672edddc84a06f0443569ac44bcc (diff) | |
add osmo_auth_c3() (separate from gsm_milenage())
To send a Ciphering Mode Command, we may need to derive a Kc from UMTS AKA
tokens. gsm_milenage() derives Kc from 3G tokens, but also derives an SRES.
For SRES, it requires an OPC, which may need to be derived from OP first. All
we need is a Kc, so we could feed a zero OPC ... but to simplify the function
call for cases where just a Kc is required, separate the c3 function out from
gsm_milenage(), as osmo_auth_c3(). Obviously call osmo_auth_c3() from
gsm_milenage() (meaning that osmo-hlr's 55.205 derived auc tests still cover
exactly that implementation).
Prepares: If04e405426c55a81341747a9b450a69188525d5c (osmo-msc)
Related: OS#2745
Change-Id: I85a1d6ae95ad9e5ce9524ef7fc06414848afc2aa
Diffstat (limited to 'src/utils.c')
0 files changed, 0 insertions, 0 deletions