Change in osmo-msc[master]: populate gsm_subscriber_connection->encr during Ciph

[Neels Hofmeyr]

Hello Vadim Yanitskiy, Jenkins Builder, 

I'd like you to reexamine a change. Please visit

    https://gerrit.osmocom.org/12016

to look at the new patch set (#6).

Change subject: populate gsm_subscriber_connection->encr during Ciph
......................................................................

populate gsm_subscriber_connection->encr during Ciph

The gsm_subscriber_connection->encr is never used. Use it.

When sending the Ciphering Mode Command, populate the encryption key.
When receivint the Ciphering Mode Complete, populate the chosen alg_id.

Out of paranoia, store the enc key only if the size is large enough.

Hence the vty_dump_one_conn() now reports the actually chosen A5 algorithm ID
used.

For 3G connections, though, this will still remain 0 in the VTY, since there is
no explicit A5 algorithm negotiated on UTRAN. (Security Mode Command and
Security Mode Complete instead of the GERAN Ciphering.)

Change-Id: Ice2c470c360612249f97301944c6fdf9443c7dce
---
M src/libmsc/gsm_04_08.c
M src/libmsc/osmo_msc.c
2 files changed, 9 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.osmocom.org:29418/osmo-msc refs/changes/16/12016/6
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Gerrit-Project: osmo-msc
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ice2c470c360612249f97301944c6fdf9443c7dce
Gerrit-Change-Number: 12016
Gerrit-PatchSet: 6
Gerrit-Owner: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder (1000002)
Gerrit-Reviewer: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Gerrit-Reviewer: Vadim Yanitskiy <axilirator at gmail.com>
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