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About cracking GSM: 1479_26C3.Karsten.Nohl.GSM.pdf

events.ccc.de

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Re: About cracking GSM: 1479_26C3.Karsten.Nohl.GSM.pdf

#7

I don't know. This guy just reiterated things that were known years ago. And he claims he cracked GSM...

The difference is that they completed the computation of the rainbow tables, which are required to make this attack practical, and made them public (although the webserver with the torrent files is currently down: http://reflextor.com/torrents/). Of course theoretically this attack is known for quite some time, but making it practical by providing the equipment and rainbow tables is new.

Interesting enough they planned to do a workshop today, where you could bring your GSM data and they wanted to try to decrypt it. However, due to legal reasons they had to cancel it (http://events.ccc.de/congress/2009/wiki/The_demonstration_is...).

Re: About cracking GSM: 1479_26C3.Karsten.Nohl.GSM.pdf

#10

I don't know. This guy just reiterated things that were known years ago. And he claims he cracked GSM...

I was at the talk. He didn't claim he cracked GSM and went over the history of the development of A5 attacks. He explained that their work is the first time the data necessary to crack A5 has been made public.

This work is important because it is a major step towards producing a working open source real-time GSM cracker.

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