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Bug #2783

closed

it seems like OsmoMSC is forcing Iu/UMTS to use encryption. why?

Added by laforge over 6 years ago. Updated over 3 years ago.

Status:
Resolved
Priority:
Low
Assignee:
Category:
IuCS support
Target version:
-
Start date:
12/23/2017
Due date:
% Done:

100%

Resolution:
Spec Reference:
Tags:
3G

Description

While working on #2460 I noticed that in case of Iu, we always force the encryption algorithm to VLR_CIPH_A5_3 which seems odd (in several ways):
  • A5/3 is a GSM cipher and is not UEA (umts encryption algo)
  • UMTS requires integrity protection with UIA, but not encryption (UEA)

This possibly needs to be clarified and the code adjusted accordingly

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