Actions
Bug #1481
openRandom LAPDm MAC-block padding is not deployed yet
Status:
New
Priority:
High
Assignee:
-
Category:
BTS (Base Transceiver Station)
Target version:
-
Start date:
Due date:
% Done:
0%
Resolution:
Spec Reference:
Description
Recent versions of TS 44.006 (Version >= 6.7.0 from October 2008) specify that the BTS shall use randomized padding (fill bits) in its Layer2 frames.
This will help to combat the known passive A5/1 cracking attacks that rely on a small portion of known plaintext.
By using randomized padding, the amount of known plaintext can be reduced.
However, as of 07/2010, no network has been found to use this randomized padding.
Related issues
Updated by laforge almost 3 years ago
- Related to Feature #5256: support for random padding in LAPDm downlink messages added
Updated by laforge almost 3 years ago
- Related to Bug #5257: support random padding in SACCH downlink messages added
Actions