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Date: Tue, 13 Aug 2013 02:17:36 +0100
From: Samuel Neves <>
Subject: Re: [PHC] The EARWORM password hash

On 12-08-2013 18:32, Bitweasil . wrote:
> I really like the use of the AES intrinsic operations for performance.
>  Unfortunately, right now, this does seem to make the algorithm very
> x86-centric - I am not aware of AES hardware acceleration on ARM
> processors, which means that this wouldn't work well for anything
> not-x86.  However, it also (right now) badly cripples GPUs as they
> have to AES in software.  I'm not sure that it would offer much of a
> benefit over FPGAs, though if you've forced an attacker to FPGAs to
> get major speedups, you're doing well.

Since we don't know what area/latency/throughput tradeoffs
Intel/AMD/future ARM licensees made when implementing AES-NI, it is
possible that an FPGA/ASIC attacker could have a significant advantage
over the defender. Depending on the scheme, bitsliced GPU AES could also
perhaps be competitive.

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