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Re: [Cfrg] matching AES security

Andrey Jivsov <crypto@brainhub.org> Wed, 30 July 2014 19:26 UTC

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From: Andrey Jivsov <crypto@brainhub.org>
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Subject: Re: [Cfrg] matching AES security
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On 07/30/2014 11:47 AM, Michael Hamburg wrote:
> * Quantum computation.  More bits of AES buys you more resistance, but
> more bits of ECC does not.

Wouldn't more qubits mean substantially higher cost and it will take 
some time (decades?) to get from 5 (?) to 256 qubits and beyond?

If so, higher bit curves have an advantage, esp. for persistent 
structures like CA certificates that cannot count on fast crypto upgrade.

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