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RFC 8898, "Third-Party Token-Based Authentication and Authorization for Session Initiation Protocol (SIP)", September 2020

Source of RFC: sipcore (art)

Errata ID: 6495
Status: Reported
Type: Editorial
Publication Format(s) : TEXT

Reported By: EungRok Lee
Date Reported: 2021-03-26

Section 1.4.2 says:

   The registrar validates the access token.  If the access token is a
   reference token, the registrar MAY perform an introspection
   [RFC7662], as in steps [4] and [5], in order to obtain more
   information about the access token and its scope, per [RFC7662].
   Otherwise, after the registrar validates the token, it inspects its
   claims and acts upon it.

It should say:

   The registrar validates the access token.  If the access token is a
   reference token, the registrar MAY perform an introspection
   [RFC7662], as in steps [3] and [4], in order to obtain more
   information about the access token and its scope, per [RFC7662].
   Otherwise, after the registrar validates the token, it inspects its
   claims and acts upon it.

Notes:

As you can see figure 2, introspection is processed in steps [3] and [4].

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