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http://cgit.osmocom.org/libosmocore/commit/?id=aa84b71f0fe014156e90dde2f0c44694368dc034
commit aa84b71f0fe014156e90dde2f0c44694368dc034
Author: Neels Hofmeyr <[email protected]>
Date: Mon Dec 18 03:12:01 2017 +0100
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
-----------------------------------------------------------------------
Summary of changes:
include/osmocom/crypt/auth.h | 2 ++
src/gsm/auth_core.c | 13 +++++++++++++
src/gsm/libosmogsm.map | 1 +
src/gsm/milenage/milenage.c | 5 ++---
4 files changed, 18 insertions(+), 3 deletions(-)
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An utility library for Open Source Mobile Communications
