Re: [OAUTH-WG] OAuth 2.1 - require PKCE?

Dick Hardt <dick.hardt@gmail.com> Fri, 08 May 2020 19:49 UTC

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From: Dick Hardt <dick.hardt@gmail.com>
Date: Fri, 8 May 2020 12:48:35 -0700
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To: Aaron Parecki <aaron@parecki.com>
Cc: Philippe De Ryck <philippe@pragmaticwebsecurity.com>, Mike Jones <Michael.Jones=40microsoft.com@dmarc.ietf.org>, OAuth WG <oauth@ietf.org>
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Subject: Re: [OAUTH-WG] OAuth 2.1 - require PKCE?
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On Fri, May 8, 2020 at 12:42 PM Aaron Parecki <aaron@parecki.com> wrote:

> > FYI: An objective of OAuth 2.1 is not to introduce anything new -- it is
> OAuth 2.0 with best practices.
>
> The line there is kind of fuzzy. The objective is not to introduce new
> concepts, however there are some changes defined that are "breaking
> changes" from plain OAuth 2.0, because those things being removed were not
> best practices for example.
>

I was clarifying that OAuth 2.1 is not introducing new features, for eg.
the WebSocket support question.

I think we can say that:

An OAuth 2.0 compliant deployment following "best practices" is also an
OAuth 2.1 compliant deployment.

This thread is a discussion of what "best practices" is.