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Re: [TLS] More flexible signature_algorithm selection for Delegated Credentials

"Martin Thomson" <mt@lowentropy.net> Thu, 21 November 2019 05:43 UTC

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Date: Thu, 21 Nov 2019 13:43:22 +0800
From: Martin Thomson <mt@lowentropy.net>
To: tls@ietf.org
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Archived-At: <https://mailarchive.ietf.org/arch/msg/tls/UeajBiRrepijz-UF56MNkkGmctE>
Subject: Re: [TLS] More flexible signature_algorithm selection for Delegated Credentials
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On Thu, Nov 21, 2019, at 11:54, Nick Sullivan wrote:
> At IETF 106, we discussed adding the ability to advertise specific 
> signature algorithms for use in DCs without requiring clients to have 
> to support these signature algorithms in leaf certificates.

Is the intent with supporting an empty extension to support backward compatibility?  I think that deployed implementations can probably just change to use the list so that we don't have to include this additional flexibility.  I'd prefer to always have a list.

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