Re: [TLS] The future of external PSK in TLS 1.3
"Blumenthal, Uri - 0553 - MITLL" <uri@ll.mit.edu> Wed, 30 September 2020 00:48 UTC
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From: "Blumenthal, Uri - 0553 - MITLL" <uri@ll.mit.edu>
To: Watson Ladd <watsonbladd@gmail.com>
CC: "tls@ietf.org" <tls@ietf.org>
Thread-Topic: [TLS] The future of external PSK in TLS 1.3
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Date: Wed, 30 Sep 2020 00:48:28 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/tls/CRgcGOMXP79UUTZOSJqegrymPxA>
Subject: Re: [TLS] The future of external PSK in TLS 1.3
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Because PSK is one of the affordable and reliable quantum-resistant key exchanges that work *today*? And done environments do not wish to do any EC operations. Yes, key management issues are real. Those who need it, understand the implications. Regards, Uri > On Sep 29, 2020, at 20:30, Watson Ladd <watsonbladd@gmail.com> wrote: > > On Tue, Sep 29, 2020 at 12:49 PM Blumenthal, Uri - 0553 - MITLL > <uri@ll.mit.edu> wrote: >> >> I share Achim's concerns. >> >> But I believe the explanations will turn out mostly useless in the real world, as the "lawyers" of the industry are guaranteed to steer away from something "not recommended". >> >> In one word: bad. > > Why is PSK so necessary? There are very few devices that can't handle > the occasional ECC operation. The key management and forward secrecy > issues with TLS-PSK are real. Steering applications that can afford > the CPU away from PSK and toward hybrid modes is a good thing and why > this registry exists imho. > > > -- > Astra mortemque praestare gradatim
- Re: [TLS] The future of external PSK in TLS 1.3 Peter Gutmann
- [TLS] The future of external PSK in TLS 1.3 John Mattsson
- Re: [TLS] The future of external PSK in TLS 1.3 Filippo Valsorda
- Re: [TLS] The future of external PSK in TLS 1.3 Viktor Dukhovni
- Re: [TLS] The future of external PSK in TLS 1.3 Hannes Tschofenig
- Re: [TLS] The future of external PSK in TLS 1.3 Carrick Bartle
- Re: [TLS] The future of external PSK in TLS 1.3 Hannes Tschofenig
- Re: [TLS] The future of external PSK in TLS 1.3 Hannes Tschofenig
- Re: [TLS] The future of external PSK in TLS 1.3 Pascal Urien
- Re: [TLS] The future of external PSK in TLS 1.3 Hannes Tschofenig
- Re: [TLS] The future of external PSK in TLS 1.3 Pascal Urien
- Re: [TLS] The future of external PSK in TLS 1.3 Hannes Tschofenig
- Re: [TLS] The future of external PSK in TLS 1.3 Pascal Urien
- Re: [TLS] The future of external PSK in TLS 1.3 Pascal Urien
- Re: [TLS] The future of external PSK in TLS 1.3 Carrick Bartle
- Re: [TLS] The future of external PSK in TLS 1.3 Achim Kraus
- Re: [TLS] The future of external PSK in TLS 1.3 Achim Kraus
- Re: [TLS] The future of external PSK in TLS 1.3 Pascal Urien
- Re: [TLS] The future of external PSK in TLS 1.3 Achim Kraus
- Re: [TLS] The future of external PSK in TLS 1.3 Hannes Tschofenig
- Re: [TLS] The future of external PSK in TLS 1.3 Blumenthal, Uri - 0553 - MITLL
- Re: [TLS] The future of external PSK in TLS 1.3 Filippo Valsorda
- Re: [TLS] The future of external PSK in TLS 1.3 David Woodhouse
- Re: [TLS] The future of external PSK in TLS 1.3 Hannes Tschofenig
- Re: [TLS] The future of external PSK in TLS 1.3 Salz, Rich
- Re: [TLS] The future of external PSK in TLS 1.3 David Benjamin
- Re: [TLS] The future of external PSK in TLS 1.3 Hannes Tschofenig
- Re: [TLS] The future of external PSK in TLS 1.3 David Benjamin
- Re: [TLS] The future of external PSK in TLS 1.3 Carrick Bartle
- Re: [TLS] The future of external PSK in TLS 1.3 Lanlan Pan
- Re: [TLS] The future of external PSK in TLS 1.3 Peter Gutmann
- Re: [TLS] The future of external PSK in TLS 1.3 Hannes Tschofenig
- Re: [TLS] The future of external PSK in TLS 1.3 Filippo Valsorda
- Re: [TLS] The future of external PSK in TLS 1.3 Pascal Urien
- Re: [TLS] The future of external PSK in TLS 1.3 Salz, Rich
- Re: [TLS] The future of external PSK in TLS 1.3 Pascal Urien
- Re: [TLS] The future of external PSK in TLS 1.3 Achim Kraus
- Re: [TLS] The future of external PSK in TLS 1.3 Blumenthal, Uri - 0553 - MITLL
- Re: [TLS] The future of external PSK in TLS 1.3 Watson Ladd
- Re: [TLS] The future of external PSK in TLS 1.3 Blumenthal, Uri - 0553 - MITLL
- Re: [TLS] The future of external PSK in TLS 1.3 Carrick Bartle
- Re: [TLS] The future of external PSK in TLS 1.3 Achim Kraus
- Re: [TLS] The future of external PSK in TLS 1.3 Hannes Tschofenig
- Re: [TLS] The future of external PSK in TLS 1.3 Hannes Tschofenig
- Re: [TLS] The future of external PSK in TLS 1.3 Rob Sayre
- Re: [TLS] The future of external PSK in TLS 1.3 Achim Kraus
- Re: [TLS] The future of external PSK in TLS 1.3 Hannes Tschofenig
- Re: [TLS] The future of external PSK in TLS 1.3 Watson Ladd
- Re: [TLS] The future of external PSK in TLS 1.3 Blumenthal, Uri - 0553 - MITLL
- Re: [TLS] The future of external PSK in TLS 1.3 Salz, Rich
- Re: [TLS] The future of external PSK in TLS 1.3 Rob Sayre