Re: draft-ietf-dnsext-dnssec-gost
Basil Dolmatov <dol@cryptocom.ru> Fri, 12 February 2010 12:11 UTC
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Date: Fri, 12 Feb 2010 15:12:30 +0300
From: Basil Dolmatov <dol@cryptocom.ru>
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To: Paul Hoffman <paul.hoffman@vpnc.org>
Subject: Re: draft-ietf-dnsext-dnssec-gost
References: <p06240806c799d87e7406@[128.89.89.170]> <4B74646F.3080904@ogud.com> <20100211210434.GJ9592@shinkuro.com> <p06240804c79a234f3ad8@[75.101.18.87]>
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Cc: ietf@ietf.org, Olafur Gudmundsson <ogud@ogud.com>, iesg@iesg.org
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Paul Hoffman пишет: > > For example, there is already a published attack on the GOST hash function that does not exist in SHA-256 and SHA-512. That "attack" lessens the complexity of building of the collision from 2**128 operations to 2**109 operations (infinitesimal part of overall complexity) and demands padding the meaningful message with several kilobytes of additional binary data, which is impossible for any message with fixed format. >The GOST algorithms have had much less cryptographic review than other algorithms. ...have had much less _published_ cryptographic review... I would say. ;) These algorithms were thoroughly and intensively reviewed by specialists throughout the world during all years of their existence. The fact that these algorithms are used without changes for 20, 15 and 10 years respectively shows that these reviews were not successful. > If that attack becomes practical, an attacker can create signatures using GOST that he/she could not create in RSA/SHA-256 or RSA/SHA-512. That "attack" cannot become practical and you know that as well as everyone who works with cryptography. > dol@
- Re: draft-ietf-dnsext-dnssec-gost Paul Hoffman
- Re: draft-ietf-dnsext-dnssec-gost Olafur Gudmundsson
- draft-ietf-dnsext-dnssec-gost Stephen Kent
- Re: draft-ietf-dnsext-dnssec-gost Andrew Sullivan
- Re: draft-ietf-dnsext-dnssec-gost Paul Hoffman
- Re: draft-ietf-dnsext-dnssec-gost Richard L. Barnes
- Re: draft-ietf-dnsext-dnssec-gost Martin Rex
- Re: draft-ietf-dnsext-dnssec-gost Michael Dillon
- Re: draft-ietf-dnsext-dnssec-gost Sean Turner
- Re: draft-ietf-dnsext-dnssec-gost Martin Rex
- Re: draft-ietf-dnsext-dnssec-gost Sean Turner
- Re: draft-ietf-dnsext-dnssec-gost Basil Dolmatov
- Re: draft-ietf-dnsext-dnssec-gost Basil Dolmatov
- Re: draft-ietf-dnsext-dnssec-gost Stephen Farrell
- Re: draft-ietf-dnsext-dnssec-gost Andrew Sullivan
- Re: draft-ietf-dnsext-dnssec-gost Stephen Kent
- Re: draft-ietf-dnsext-dnssec-gost Martin Rex
- Re: draft-ietf-dnsext-dnssec-gost David Conrad
- Re: draft-ietf-dnsext-dnssec-gost Edward Lewis
- Re: draft-ietf-dnsext-dnssec-gost Sean Turner
- Re: draft-ietf-dnsext-dnssec-gost Olafur Gudmundsson
- Re: draft-ietf-dnsext-dnssec-gost Martin Rex
- Re: draft-ietf-dnsext-dnssec-gost Basil Dolmatov
- Re: draft-ietf-dnsext-dnssec-gost Basil Dolmatov
- Re: draft-ietf-dnsext-dnssec-gost ned+ietf
- Re: draft-ietf-dnsext-dnssec-gost Martin Rex
- Re: draft-ietf-dnsext-dnssec-gost Stephen Kent
- Re: draft-ietf-dnsext-dnssec-gost Stephen Kent
- RE: draft-ietf-dnsext-dnssec-gost Rex, Martin
- Re: draft-ietf-dnsext-dnssec-gost Spencer Dawkins
- Re: draft-ietf-dnsext-dnssec-gost Martin Rex
- Re: draft-ietf-dnsext-dnssec-gost Mark Andrews
- Re: draft-ietf-dnsext-dnssec-gost Martin Rex
- Re: draft-ietf-dnsext-dnssec-gost Olafur Gudmundsson
- Re: draft-ietf-dnsext-dnssec-gost Olafur Gudmundsson
- Re: draft-ietf-dnsext-dnssec-gost Basil Dolmatov
- Re: draft-ietf-dnsext-dnssec-gost Andrew Sullivan
- Re: draft-ietf-dnsext-dnssec-gost Martin Rex
- Re: draft-ietf-dnsext-dnssec-gost Ran Atkinson
- Re: draft-ietf-dnsext-dnssec-gost Phillip Hallam-baker
- Re: draft-ietf-dnsext-dnssec-gost Phillip Hallam-baker
- Re: draft-ietf-dnsext-dnssec-gost Olafur Gudmundsson