RSA side-channel attack
in [Cryptography]
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From: starwars on 5 Mar 2010 04:29 http://www.networkworld.com/news/2010/030410-rsa-security- attack.html?hpg1=bn Amazing! Cracking a 1024-bit RSA key in 100 hours sounds pretty good to me!
From: Tom St Denis on 5 Mar 2010 06:56 On Mar 5, 4:29 am, starwars <nonscrivet...(a)tatooine.homelinux.net> wrote: > http://www.networkworld.com/news/2010/030410-rsa-security- > attack.html?hpg1=bn > > Amazing! Cracking a 1024-bit RSA key in 100 hours sounds pretty good to > me! It's misleading to think this has anything to do with key size. Of course they wouldn't make the press if they "merely" broke a 512-bit key with their technique which is largely akin to punching a guy in the gut and stealing their wallet. There have been known various blinding techniques for a while... Tom
From: Legrandin on 5 Mar 2010 12:43 > http://www.networkworld.com/news/2010/030410-rsa-security- > attack.html?hpg1=bn Where is the news? Faults attacks have been known for ages as a quick way to extract (I would not say "crack") a private key, for any algorithm. Openssl is sensitive to them. So what? I would never use it in environments where side-channel attacks are a real threat.
From: Simon Johnson on 6 Mar 2010 18:40
> It's misleading to think this has anything to do with key size. Of > course they wouldn't make the press if they "merely" broke a 512-bit > key with their technique which is largely akin to punching a guy in > the gut and stealing their wallet. > I've heard that people have had success breaking a 8192-bit key that way. Punching a guy in the gut, apparently, is rather effective. Cheers, Simon. |