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Re: [TLS] Consensus call for keys used in handshake and data messages

"Blumenthal, Uri - 0553 - MITLL" <uri@ll.mit.edu> Tue, 14 June 2016 11:27 UTC

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From: "Blumenthal, Uri - 0553 - MITLL" <uri@ll.mit.edu>
To: "tls@ietf.org" <tls@ietf.org>
Thread-Topic: [TLS] Consensus call for keys used in handshake and data messages
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Date: Tue, 14 Jun 2016 11:18:19 +0000
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Subject: Re: [TLS] Consensus call for keys used in handshake and data messages
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Key reuse often ends up causing problems. IMHO a more sound approach is (2). IMHO it isn't prohibitively expensive either.

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  Original Message  
From: Björn Tackmann
Sent: Tuesday, June 14, 2016 05:23
To: tls@ietf.org
Subject: Re: [TLS] Consensus call for keys used in handshake and data	messages

+1


> On Jun 14, 2016, at 7:08 AM, Karthikeyan Bhargavan <karthik.bhargavan@gmail.com> wrote:
> 
> I prefer (2)
> 
>> On 13 Jun 2016, at 22:27, Daniel Kahn Gillmor <dkg@fifthhorseman.net> wrote:
>> 
>> On Mon 2016-06-13 15:00:03 -0400, Joseph Salowey wrote:
>>> 1. Use the same key for handshake and application traffic (as in the
>>> current draft-13)
>>> 
>>> or
>>> 
>>> 2. Restore a public content type and different keys
>> 
>> Given this choice, i prefer (1).
>> 
>> --dkg
>> 
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