[TLS] Deprecating TLS 1.0, 1.1 and SHA1 signature algorithms
Kurt Roeckx <kurt@roeckx.be> Mon, 11 January 2016 18:30 UTC
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Date: Mon, 11 Jan 2016 19:30:17 +0100
From: Kurt Roeckx <kurt@roeckx.be>
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Subject: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signature algorithms
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Hi, After the SLOTH paper, we should think about starting to deprecate TLS 1.0 and TLS 1.1 and the SHA1 based signature algorithms in TLS 1.2. As I understand it, they estimate that both TLS 1.2 with SHA1 and TLS 1.0 and 1.1 with MD5|SHA1 currently require about 2^77 to be broken. They all depend on the chosen prefix collision on SHA1, with the MD5 part in TLS 1.0 and 1.1 not adding much. It seems that disabling SHA1 in TLS 1.2 doesn't buy you anything unless you also disable TLS 1.0 and 1.1. Kurt
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… David Benjamin
- [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signature… Kurt Roeckx
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Peter Gutmann
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Tony Arcieri
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… David Benjamin
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Peter Gutmann
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Yuhong Bao
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Andrei Popov
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Viktor Dukhovni
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Andrei Popov
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Watson Ladd
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Martin Thomson
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Andrei Popov
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Bill Frantz
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Samuel Neves
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Peter Gutmann
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Watson Ladd
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Peter Gutmann
- [TLS] MD5 diediedie (was Re: Deprecating TLS 1.0,… Dave Garrett
- Re: [TLS] MD5 diediedie (was Re: Deprecating TLS … Yuhong Bao
- Re: [TLS] MD5 diediedie (was Re: Deprecating TLS … Loganaden Velvindron
- Re: [TLS] MD5 diediedie (was Re: Deprecating TLS … Viktor Dukhovni
- Re: [TLS] MD5 diediedie (was Re: Deprecating TLS … Dave Garrett
- Re: [TLS] MD5 diediedie (was Re: Deprecating TLS … Tony Arcieri
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Karthikeyan Bhargavan
- Re: [TLS] MD5 diediedie (was Re: Deprecating TLS … Stephen Farrell
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Martin Rex
- Re: [TLS] MD5 diediedie (was Re: Deprecating TLS … Hubert Kario
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Karthikeyan Bhargavan
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Hubert Kario
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Peter Gutmann
- Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signa… Hubert Kario
- Re: [TLS] MD5 diediedie (was Re: Deprecating TLS … Dave Garrett