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Re: [http-auth] I-D Action: draft-ietf-httpauth-scram-auth-09.txt

Tony Hansen <tony@att.com> Sat, 14 November 2015 01:46 UTC

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From: Tony Hansen <tony@att.com>
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Subject: Re: [http-auth] I-D Action: draft-ietf-httpauth-scram-auth-09.txt
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On 11/13/15 7:59 PM, Martin J. Dürst wrote:
> I think further wording improvement is needed.
>
> On 2015/11/14 03:24, Tony Hansen wrote:
>
>>           Note that version of SCRAM doesn't support HTTP channel
>>           bindings, so this header always starts with "n"; otherwise the
>>           message is invalid and authentication MUST fail.
>
> The second word, "that", seems to do double duty, both in "Note that"
> and "that version of SCRAM". This doesn't parse. Possible solutions:
>
>           Note that this version of SCRAM doesn't support HTTP channel
>           bindings, so this header always starts with "n"; otherwise the
>           message is invalid and authentication MUST fail.
> or
>
>           Note that SCRAM-SHA-256 doesn't support HTTP channel
>           bindings, so this header always starts with "n"; otherwise the
>           message is invalid and authentication MUST fail.

SCRAM-SHA-256 does support HTTP channel bindings, so the latter is
clearly wrong.

I would go with your first suggestion.

    Tony

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