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Re: [Acme] Content-Type and file extensions for HTTP01 challenges

Martin Thomson <martin.thomson@gmail.com> Fri, 13 November 2015 01:05 UTC

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Date: Thu, 12 Nov 2015 17:05:53 -0800
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From: Martin Thomson <martin.thomson@gmail.com>
To: Peter Eckersley <pde@eff.org>
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Subject: Re: [Acme] Content-Type and file extensions for HTTP01 challenges
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On 12 November 2015 at 16:44, Peter Eckersley <pde@eff.org> wrote:
> But is 3 the best answer?

Of those presented, I think so.  I know that this isn't a great answer
(it's bad already, so bad must be OK), but being able to drop things
into .well-known opens a raft of other interesting attacks.

More seriously, I think that the other options all have deployment
complications that far outweigh the marginal benefit that extra
checking might provide.

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