Re: [Dtls-iot] Secure Time (again)
Eric Rescorla <ekr@rtfm.com> Tue, 11 August 2015 13:34 UTC
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From: Eric Rescorla <ekr@rtfm.com>
Date: Tue, 11 Aug 2015 08:33:40 -0500
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To: Hannes Tschofenig <hannes.tschofenig@gmx.net>
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Cc: dtls-iot@ietf.org, Michael StJohns <msj@nthpermutation.com>
Subject: Re: [Dtls-iot] Secure Time (again)
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On Tue, Aug 11, 2015 at 5:34 AM, Hannes Tschofenig < hannes.tschofenig@gmx.net> wrote: > Hi Mike, > > yes, there have been discussions about removing this server-provided > time information in TLS 1.3. > This is already done. -Ekr > Although the current profiles focus on TLS 1.2 this might cause some > problems in the future. > > Ciao > Hannes > > > On 08/09/2015 08:23 PM, Michael StJohns wrote: > > On 8/7/2015 11:42 AM, Hannes Tschofenig wrote: > >> It turns out that TLS has a way to communicate time information from the > >> server to the client as part of the ServerHello message. Of course, it > >> is not a good idea to trust every server when they return time > >> information since this allows an adversary to trick the client into > >> accepting an expired certificate. > > > > I think this has been deprecated and removed for TLS1.3? > > > > Mike > > > > _______________________________________________ > > dtls-iot mailing list > > dtls-iot@ietf.org > > https://www.ietf.org/mailman/listinfo/dtls-iot > > > _______________________________________________ > dtls-iot mailing list > dtls-iot@ietf.org > https://www.ietf.org/mailman/listinfo/dtls-iot > >
- [Dtls-iot] Secure Time (again) Hannes Tschofenig
- Re: [Dtls-iot] Secure Time (again) Michael StJohns
- Re: [Dtls-iot] Secure Time (again) Hannes Tschofenig
- Re: [Dtls-iot] Secure Time (again) Hannes Tschofenig
- Re: [Dtls-iot] Secure Time (again) Eric Rescorla
- Re: [Dtls-iot] Secure Time (again) Michael StJohns
- Re: [Dtls-iot] Secure Time (again) Hannes Tschofenig
- Re: [Dtls-iot] Secure Time (again) Ludwig Seitz
- Re: [Dtls-iot] Secure Time (again) Hannes Tschofenig
- Re: [Dtls-iot] Secure Time (again) Michael StJohns
- Re: [Dtls-iot] Secure Time (again) Stephen Farrell
- Re: [Dtls-iot] Secure Time (again) Michael StJohns
- Re: [Dtls-iot] Secure Time (again) stephen.farrell
- Re: [Dtls-iot] Secure Time (again) Michael StJohns
- Re: [Dtls-iot] Secure Time (again) Derek Atkins
- Re: [Dtls-iot] Secure Time (again) Michael StJohns
- Re: [Dtls-iot] Secure Time (again) Derek Atkins
- Re: [Dtls-iot] Secure Time (again) Carsten Bormann