> On Aug 29, 2016, at 6:26 AM, Rene Struik <rstruik....@gmail.com> wrote:
> 
> I think it is a mistake to think that simply using block ciphers with a 
> larger block size is enough to counter attacks, as the literature on 
> successful side channel attacks on such block cipher demonstrates. The real 
> message is that one should not reuse keys ad infinitum, which unfortunately 
> seems hard to sink in.
> 
> Singling out 3-DES in this respect does not seem to tackle the real issue 
> (which is a system security issue often only paid lip service to in practice).

Yes, we should just stop using 64-bit block ciphers and deal with the issues 
you mention within the context of larger blocks.

        Jon

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