Re: [TLS] About encrypting SNI
"Sniffen, Brian" <bsniffen@akamai.com> Thu, 17 April 2014 20:26 UTC
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From: "Sniffen, Brian" <bsniffen@akamai.com>
To: Eric Rescorla <ekr@rtfm.com>
Date: Thu, 17 Apr 2014 16:26:35 -0400
Thread-Topic: [TLS] About encrypting SNI
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Cc: "tls@ietf.org" <tls@ietf.org>, Andy Lutomirski <luto@amacapital.net>
Subject: Re: [TLS] About encrypting SNI
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On Apr 17, 2014, at 3:20 PM, "Eric Rescorla" <ekr@rtfm.com> wrote: > > One concern I would have is whether we understand the problem well > enough to actually specify this. I'm not an expert in this area, but weren't > there a bunch of concerns about designing puzzles that were effective > without being prohibitively expensive for mobile devices? Oh, I expect to deny service to users whose computational power is swamped by an adversary node's. I don't have a way to fix that. But conventional puzzles are enough to convert an adversary who could deny service to everybody---by overloading the server---to one who can only deny service to computationally weak clients, or when they overwhelmingly outnumber normal clients. And if we ever do come to terms on session resumption, that can help mobile clients a good bit. I understand most mobile clients keep sessions in persistent storage to keep them alive as long as possible for this reason.
- [TLS] About encrypting SNI Salz, Rich
- Re: [TLS] About encrypting SNI Martin Thomson
- Re: [TLS] About encrypting SNI Salz, Rich
- Re: [TLS] About encrypting SNI Watson Ladd
- Re: [TLS] About encrypting SNI Russ Housley
- Re: [TLS] About encrypting SNI Eric Rescorla
- Re: [TLS] About encrypting SNI Brian Sniffen
- Re: [TLS] About encrypting SNI Alyssa Rowan
- Re: [TLS] About encrypting SNI Nick Mathewson
- Re: [TLS] About encrypting SNI Daniel Kahn Gillmor
- Re: [TLS] About encrypting SNI Sniffen, Brian
- Re: [TLS] About encrypting SNI Yoav Nir
- Re: [TLS] About encrypting SNI Salz, Rich
- Re: [TLS] About encrypting SNI Seth David Schoen
- Re: [TLS] About encrypting SNI Nico Williams
- Re: [TLS] About encrypting SNI Watson Ladd
- Re: [TLS] About encrypting SNI Salz, Rich
- Re: [TLS] About encrypting SNI Yoav Nir
- Re: [TLS] About encrypting SNI Salz, Rich
- Re: [TLS] About encrypting SNI Watson Ladd
- Re: [TLS] About encrypting SNI Salz, Rich
- Re: [TLS] About encrypting SNI Eric Rescorla
- Re: [TLS] About encrypting SNI Alyssa Rowan
- Re: [TLS] About encrypting SNI Salz, Rich
- Re: [TLS] About encrypting SNI Martin Rex
- Re: [TLS] About encrypting SNI Eric Rescorla
- Re: [TLS] About encrypting SNI Eric Rescorla
- Re: [TLS] About encrypting SNI Andy Lutomirski
- Re: [TLS] About encrypting SNI Eric Rescorla
- Re: [TLS] About encrypting SNI Tom Ritter
- Re: [TLS] About encrypting SNI Brian Sniffen
- Re: [TLS] About encrypting SNI Andy Lutomirski
- Re: [TLS] About encrypting SNI Andy Lutomirski
- Re: [TLS] About encrypting SNI Salz, Rich
- Re: [TLS] About encrypting SNI Eric Rescorla
- Re: [TLS] About encrypting SNI Watson Ladd
- Re: [TLS] About encrypting SNI Brian Sniffen
- Re: [TLS] About encrypting SNI Andy Lutomirski
- Re: [TLS] About encrypting SNI Andy Lutomirski
- Re: [TLS] About encrypting SNI Sniffen, Brian
- Re: [TLS] About encrypting SNI Andy Lutomirski
- Re: [TLS] About encrypting SNI Alyssa Rowan
- Re: [TLS] About encrypting SNI Michael D'Errico
- Re: [TLS] About encrypting SNI James Cloos
- Re: [TLS] About encrypting SNI Jacob Appelbaum
- Re: [TLS] About encrypting SNI Andy Lutomirski
- Re: [TLS] About encrypting SNI Erik Nygren
- Re: [TLS] About encrypting SNI Andy Lutomirski
- Re: [TLS] About encrypting SNI Jacob Appelbaum
- [TLS] Forged RST (was: About encrypting SNI) Alyssa Rowan
- Re: [TLS] Forged RST (was: About encrypting SNI) Eric Rescorla
- Re: [TLS] About encrypting SNI Paul Lambert
- Re: [TLS] About encrypting SNI Andy Lutomirski
- Re: [TLS] About encrypting SNI Erik Nygren
- Re: [TLS] About encrypting SNI Andy Lutomirski
- Re: [TLS] Forged RST (was: About encrypting SNI) Yoav Nir
- Re: [TLS] About encrypting SNI Sniffen, Brian
- Re: [TLS] Forged RST (was: About encrypting SNI) Erik Nygren
- Re: [TLS] About encrypting SNI James Cloos
- Re: [TLS] Forged RST Stephen Farrell
- Re: [TLS] About encrypting SNI Andy Lutomirski
- Re: [TLS] Forged RST (was: About encrypting SNI) Nico Williams
- Re: [TLS] About encrypting SNI Erik Nygren
- Re: [TLS] About encrypting SNI Sniffen, Brian
- Re: [TLS] About encrypting SNI Andy Lutomirski
- Re: [TLS] About encrypting SNI Martin Thomson
- Re: [TLS] About encrypting SNI Brian Sniffen
- Re: [TLS] About encrypting SNI Eric Rescorla
- Re: [TLS] About encrypting SNI Sniffen, Brian
- Re: [TLS] About encrypting SNI Erik Nygren
- Re: [TLS] Forged RST (was: About encrypting SNI) Bill Frantz
- Re: [TLS] Forged RST (was: About encrypting SNI) Yoav Nir
- Re: [TLS] Forged RST (was: About encrypting SNI) Bill Frantz
- Re: [TLS] Forged RST (was: About encrypting SNI) Eric Rescorla
- Re: [TLS] Forged RST (was: About encrypting SNI) Watson Ladd
- Re: [TLS] Forged RST (was: About encrypting SNI) Eric Rescorla
- Re: [TLS] About encrypting SNI Marsh Ray
- Re: [TLS] About encrypting SNI Martin Rex
- Re: [TLS] About encrypting SNI David Holmes
- Re: [TLS] About encrypting SNI Brian Sniffen
- Re: [TLS] About encrypting SNI Marsh Ray
- Re: [TLS] About encrypting SNI Marsh Ray
- Re: [TLS] About encrypting SNI Nico Williams
- Re: [TLS] About encrypting SNI Andy Lutomirski
- Re: [TLS] About encrypting SNI Michael D'Errico
- Re: [TLS] About encrypting SNI Watson Ladd
- Re: [TLS] About encrypting SNI Erik Nygren
- Re: [TLS] About encrypting SNI Salz, Rich
- Re: [TLS] About encrypting SNI Daniel Kahn Gillmor
- Re: [TLS] About encrypting SNI Salz, Rich
- Re: [TLS] About encrypting SNI - Traffic Analysis… Michael StJohns
- Re: [TLS] About encrypting SNI - Traffic Analysis… Nico Williams
- Re: [TLS] About encrypting SNI - Traffic Analysis… Stephen Farrell
- Re: [TLS] About encrypting SNI - Traffic Analysis… Martin Rex
- Re: [TLS] About encrypting SNI Nikos Mavrogiannopoulos
- Re: [TLS] About encrypting SNI Salz, Rich
- Re: [TLS] About encrypting SNI Stephen Farrell
- Re: [TLS] About encrypting SNI Andy Lutomirski
- Re: [TLS] About encrypting SNI - Traffic Analysis… Martin Thomson
- Re: [TLS] About encrypting SNI - Traffic Analysis… Tom Ritter
- Re: [TLS] About encrypting SNI Brian Sniffen
- Re: [TLS] About encrypting SNI Fabrice
- Re: [TLS] About encrypting SNI Jacob Appelbaum
- Re: [TLS] About encrypting SNI Paul Lambert
- Re: [TLS] About encrypting SNI Yoav Nir
- Re: [TLS] About encrypting SNI Daniel Kahn Gillmor
- Re: [TLS] About encrypting SNI Tim Bray
- Re: [TLS] About encrypting SNI Jacob Appelbaum
- Re: [TLS] About encrypting SNI Paul Hoffman
- Re: [TLS] About encrypting SNI Viktor Dukhovni
- Re: [TLS] About encrypting SNI Brian Sniffen
- Re: [TLS] About encrypting SNI Yoav Nir