Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1.1"
Hubert Kario <hkario@redhat.com> Fri, 03 May 2019 15:23 UTC
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From: Hubert Kario <hkario@redhat.com>
To: mrex@sap.com
Cc: tls@ietf.org, Martin Thomson <mt@lowentropy.net>
Date: Fri, 03 May 2019 17:23:28 +0200
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Subject: Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1.1"
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On Friday, 3 May 2019 16:56:54 CEST Martin Rex wrote: > Hubert Kario <hkario@redhat.com> wrote: > > We've been over this Martin, the theoretical research shows that for > > Merkle- Damgård functions, combining them doesn't increase their security > > significantly. > > You are completely misunderstanding the results. > > The security is greatly increased! > > Nobody is afraid of the exhaustive search preimage attacks. > > What folks with a little crypto clue are afraid of is > significantly-faster-than-exhaustive-search real-time preimage attacks. > And this is where > > TLSv1.0 + TLSv1.1 (rsa,SHA1+MD5) > > is *significantly* stronger than > > TLSv1.2 (rsa,MD5) *cough* -- which a depressingly high number of clueless > implementers actually implemented, see SLOTH > TLSv1.2 (rsa,SHA1) > > > That is also trivially formally provable. I'm eagerly waiting on your published paper on the topic. -- Regards, Hubert Kario Senior Quality Engineer, QE BaseOS Security team Web: www.cz.redhat.com Red Hat Czech s.r.o., Purkyňova 115, 612 00 Brno, Czech Republic
- [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1.1" Christopher Wood
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Watson Ladd
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Martin Thomson
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… John Mattsson
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Maarten Aertsen (NCSC-NL)
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Stephen Farrell
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Gary Gapinski
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Kathleen Moriarty
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Daniel Migault
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Viktor Dukhovni
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Loganaden Velvindron
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Hubert Kario
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Töma Gavrichenkov
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Salz, Rich
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Viktor Dukhovni
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Roland Zink
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Martin Thomson
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Christopher Wood
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Viktor Dukhovni
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Martin Rex
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Töma Gavrichenkov
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Kathleen Moriarty
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Kathleen Moriarty
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Kathleen Moriarty
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Kathleen Moriarty
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Kathleen Moriarty
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Kathleen Moriarty
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Martin Thomson
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Hubert Kario
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Kathleen Moriarty
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Martin Rex
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Hubert Kario
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Peter Gutmann
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Benjamin Kaduk
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Peter Gutmann
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Viktor Dukhovni
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Eric Rescorla
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Kathleen Moriarty
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Kathleen Moriarty
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Peter Gutmann
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Kathleen Moriarty
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Martin Thomson
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Hubert Kario
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Hubert Kario
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Töma Gavrichenkov
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Benjamin Kaduk
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Kathleen Moriarty
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Blumenthal, Uri - 0553 - MITLL
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Kathleen Moriarty
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Viktor Dukhovni
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Viktor Dukhovni
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… David Benjamin
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Martin Rex
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Peter Gutmann
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Hubert Kario
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Martin Rex
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Peter Gutmann
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Martin Thomson
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Hubert Kario
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Martin Rex
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Peter Gutmann
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Hubert Kario
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Martin Rex
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… David Benjamin
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Kathleen Moriarty
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Hubert Kario
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Martin Rex
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Peter Gutmann
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Christopher Wood
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Martin Rex
- Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1… Peter Gutmann