[HN Gopher] Falcon Down: Breaking Falcon Signature Scheme Throug...
       ___________________________________________________________________
        
       Falcon Down: Breaking Falcon Signature Scheme Through Side-Channel
       Attacks [pdf]
        
       Author : znano
       Score  : 20 points
       Date   : 2023-11-26 15:33 UTC (7 hours ago)
        
 (HTM) web link (eprint.iacr.org)
 (TXT) w3m dump (eprint.iacr.org)
        
       | xhkkffbf wrote:
       | This is interesting news. I wonder if the EMF leaking from other
       | chips can divulge keys?
        
         | kyboren wrote:
         | Yes, it can and will, unless very special care is taken to
         | ensure it does not. See also TEMPEST[0] and NSTISSAM[1].
         | 
         | [0]: https://en.wikipedia.org/wiki/Tempest_%28codename%29
         | 
         | [1]:
         | https://web.elastic.org/~fche/mirrors/cryptome.org/nt1-92-1-...
        
         | tptacek wrote:
         | It's not news, is it? It's from 2021.
        
       | api wrote:
       | This isn't the same as a true mathematical break, but what it
       | does show is that Falcon is very hard to implement without
       | presenting side channels attacks. That makes it unfavorable to a
       | lot of cryptographers.
        
         | jnwatson wrote:
         | It took a long time before we came up with a bunch of
         | mechanisms to hide the power profile of ECC scalar multiplies.
         | I expect the same here.
        
       ___________________________________________________________________
       (page generated 2023-11-26 23:01 UTC)