Re: [TLS] Additional changes for draft-ietf-tls-iana-registry-updates

Sean Turner <> Thu, 22 March 2018 10:07 UTC

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From: Sean Turner <>
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Date: Thu, 22 Mar 2018 10:07:16 +0000
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Subject: Re: [TLS] Additional changes for draft-ietf-tls-iana-registry-updates
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I had a quick chat with the iANA folks about the HashAlgorithm and SignatureAlgorithm, which we are effectively closing by marking all unregistered bits as either reserved or depcreated.  IANA suggested another way which is to just close the registry,   An example for the registry follows:

	TLS HashAlgorithm Registry

	Registration Procedure(s)

	Closed see [this-to-be-rfc]



We’d make the following changes to the draft:

    [SHALL update/has updated] the TLS HashAlgorithm Registry to list
    values 7-223 as "Reserved" and the TLS SignatureAlgorithm registry
    to list values 4-223 as "Reserved”.

    [SHALL close/has closed] the TLS HashAlgorithm Registry and
    the TLS SignatureAlgorithm registries for new assignments.

I personally think this is cleaner that reserving the values.  But, it does mean that this registries are closed for assignments.


> On Mar 16, 2018, at 14:01, Sean Turner <>; wrote:
> During Adam Roach’s AD review of draft-ietf-tls-tls13, he noted something about the HashAlgorithm and that made me go look at what was said in draft-ietf-tls-iana-registry-updates.  Turns out that 4492bis assigned some values draft-ietf-tls-iana-registry-updates was marking as reserved.  I have fixed that up in:
> One further point brought out in discussions with Adam was that if we’re really closing the HashAlgorithm and SignatureAlgorithms registry we need to also mark 224-255 as deprecated.  Currently these are marked as Reserved for Private Use.  So the question is should we mark 224-255 as deprecated in these two registries?
> spt