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Re: [TLS] TLS Client Puzzles

Jeffrey Walton <noloader@gmail.com> Fri, 03 July 2015 22:26 UTC

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Date: Fri, 03 Jul 2015 18:26:29 -0400
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From: Jeffrey Walton <noloader@gmail.com>
To: Douglas Stebila <stebila@qut.edu.au>
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Subject: Re: [TLS] TLS Client Puzzles
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Hi Douglas,

> My research group did some experimental work a few years ago involving client puzzles in TLS; some of the results might be of interest, though not all:  we focused on RSA key transport ciphersuites (rather than ECDHE) and also considered a new signature algorithm for client authentication based on a design of Bernstein.
>

Are you aware of any papers or results that callout puzzles as a
successful remediation to DoS and DDoS? (Vanilla TCP and SSL/TLS would
both be useful).

Jeff

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