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Bug #1481

Random LAPDm MAC-block padding is not deployed yet

Added by laforge over 2 years ago. Updated over 2 years ago.

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.

History

#1 Updated by laforge over 2 years ago

  • Assignee deleted (laforge)

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