Re: [dane] [openpgp] The DANE draft
"Paul Hoffman" <paul.hoffman@vpnc.org> Wed, 05 August 2015 15:56 UTC
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From: Paul Hoffman <paul.hoffman@vpnc.org>
To: Stephen Farrell <stephen.farrell@cs.tcd.ie>
Date: Wed, 05 Aug 2015 08:55:58 -0700
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References: <CAMm+LwhYdBLXM8Td8q8SCnzgwywRgMx3wNKeS_Q0JSN4Lh7rZQ@mail.gmail.com> <87bnf1hair.fsf@alice.fifthhorseman.net> <alpine.LFD.2.11.1507250832510.854@bofh.nohats.ca> <87bnem2xjq.fsf@alice.fifthhorseman.net> <alpine.LFD.2.11.1508050331340.1451@bofh.nohats.ca> <55C1F35A.5070904@cs.tcd.ie> <B7419740-25C9-4F8D-85AE-FC6E11BCC038@vpnc.org> <55C22AD4.5010709@cs.tcd.ie>
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Cc: Paul Wouters <paul@nohats.ca>, dane WG list <dane@ietf.org>, Daniel Kahn Gillmor <dkg@fifthhorseman.net>, IETF OpenPGP <openpgp@ietf.org>
Subject: Re: [dane] [openpgp] The DANE draft
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On 5 Aug 2015, at 8:25, Stephen Farrell wrote: > On 05/08/15 16:12, Paul Hoffman wrote: >> Wearing my author hat: I don't care between b32 and hashing. Both are >> equally easy to document. However: >> >> On 5 Aug 2015, at 4:28, Stephen Farrell wrote: >> >>> So sorry to continue an argument but shouldn't this experiment be >>> a more conservative about privacy just in case it ends up wildly >>> successful? >> >> How is using the hash more conservative about privacy, except in >> zones >> that are signed with NSEC instead of the more common NSEC3? If you >> assume zones signed with NSEC3, both options are equally susceptible >> to >> dictionary-based guessing attacks, given that the effort to create >> search dictionaries for the billion of common LHS names is pretty low >> even for hashes. > > Tempora. That on-path attacker has a far easier time reversing the > b32 than anything based on the hash. Even with DPRIVE, we don't know > how to handle the recursive to authoritative part. Thanks, I was only thinking of off-path attackers. I agree that, if we are concerned with on-path watchers, hashes would preserve much more privacy than Base32 encodings. --Paul Hoffman
- Re: [dane] [openpgp] The DANE draft Paul Wouters
- Re: [dane] [openpgp] The DANE draft Olafur Gudmundsson
- Re: [dane] [openpgp] The DANE draft Phillip Hallam-Baker
- Re: [dane] [openpgp] The DANE draft Paul Wouters
- Re: [dane] [openpgp] The DANE draft Paul Wouters
- [dane] Is running a DANE nameserver for a TLD as … Coyo
- Re: [dane] Is running a DANE nameserver for a TLD… Viktor Dukhovni
- Re: [dane] Is running a DANE nameserver for a TLD… Coyo
- Re: [dane] [openpgp] The DANE draft Werner Koch
- Re: [dane] Is running a DANE nameserver for a TLD… Wiley, Glen
- Re: [dane] Is running a DANE nameserver for a TLD… Nico Williams
- Re: [dane] The DANE draft Simon Josefsson
- Re: [dane] [openpgp] The DANE draft Paul Wouters
- Re: [dane] [openpgp] The DANE draft Stephen Farrell
- Re: [dane] [openpgp] The DANE draft Patrick Ben Koetter
- Re: [dane] [openpgp] The DANE draft Paul Hoffman
- Re: [dane] [openpgp] The DANE draft Stephen Farrell
- Re: [dane] [openpgp] The DANE draft Carsten Strotmann
- Re: [dane] [openpgp] The DANE draft Paul Hoffman
- Re: [dane] [openpgp] The DANE draft Patrik Löhr
- Re: [dane] [openpgp] The DANE draft Viktor Dukhovni
- Re: [dane] [openpgp] The DANE draft Stephen Farrell
- Re: [dane] [openpgp] The DANE draft Daniel Kahn Gillmor
- Re: [dane] [openpgp] The DANE draft Daniel Kahn Gillmor
- Re: [dane] [openpgp] The DANE draft Paul Wouters
- Re: [dane] [openpgp] The DANE draft Jiankang Yao
- Re: [dane] [openpgp] The DANE draft Hosnieh Rafiee
- Re: [dane] [openpgp] The DANE draft Paul Wouters
- Re: [dane] [openpgp] The DANE draft Hosnieh Rafiee
- Re: [dane] [openpgp] The DANE draft Hosnieh Rafiee
- Re: [dane] [openpgp] The DANE draft Vincent Breitmoser
- Re: [dane] [openpgp] The DANE draft Stephen Farrell
- Re: [dane] [openpgp] The DANE draft Carsten Strotmann
- Re: [dane] [openpgp] The DANE draft Paul Wouters
- Re: [dane] [openpgp] The DANE draft Stephen Farrell
- Re: [dane] [openpgp] The DANE draft Viktor Dukhovni
- Re: [dane] [openpgp] The DANE draft Hosnieh Rafiee
- Re: [dane] [openpgp] The DANE draft Warren Kumari
- Re: [dane] [openpgp] The DANE draft Daniel Kahn Gillmor