Subject Identifiers for Security Event Tokens
draft-ietf-secevent-subject-identifiers-00

Document Type Active Internet-Draft (secevent WG)
Last updated 2018-07-18
Replaces draft-backman-secevent-subject-identifiers
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Security Events Working Group                                 A. Backman
Internet-Draft                                                    Amazon
Intended status: Standards Track                            M. Scurtescu
Expires: January 19, 2019                                         Google
                                                           July 18, 2018

             Subject Identifiers for Security Event Tokens
               draft-ietf-secevent-subject-identifiers-00

Abstract

   Security events communicated within Security Event Tokens may support
   a variety of identifiers to identify the subject and/or other
   principals related to the event.  This specification formalizes the
   notion of subject identifiers as named sets of well-defined claims
   describing the subject, a mechanism for representing subject
   identifiers within a [JSON] object such as a JSON Web Token [JWT] or
   Security Event Token [SET], and a registry for defining and
   allocating names for these claim sets.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on January 19, 2019.

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect

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   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Notational Conventions  . . . . . . . . . . . . . . . . . . .   3
   3.  Subject Identifiers . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Email Subject Identifier Type . . . . . . . . . . . . . .   3
     3.2.  Phone Number Subject Identifier Type  . . . . . . . . . .   4
     3.3.  Issuer and Subject Subject Identifier Type  . . . . . . .   4
     3.4.  ID Token Claims Subject Identifier Type . . . . . . . . .   5
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
     4.1.  Security Event Subject Identifier Types Registry  . . . .   5
       4.1.1.  Registration Template . . . . . . . . . . . . . . . .   6
       4.1.2.  Initial Registry Contents . . . . . . . . . . . . . .   6
       4.1.3.  Guidance for Expert Reviewers . . . . . . . . . . . .   7
   5.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .   8
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   7.  Normative References  . . . . . . . . . . . . . . . . . . . .   8
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .   9
   Change Log  . . . . . . . . . . . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   As described in section 1.2 of [SET], the subject of a security event
   may take a variety of forms, including but not limited to a JWT
   principal, an IP address, a URL, etc.  Furthermore, even in the case
   where the subject of an event is more narrowly scoped, there may be
   multiple ways by which a given subject may be identified.  For
   example, an account may be identified by an opaque identifier, an
   email address, a phone number, a JWT "iss" claim and "sub" claim,
   etc., depending on the nature and needs of the transmitter and
   receiver.  Even within the context of a given transmitter and
   receiver relationship, it may be appropriate to identify different
   accounts in different ways, for example if some accounts only have
   email addresses associated with them while others only have phone
   numbers.  Therefore it can be necessary to indicate within a SET the
   mechanism by which the subject of the security event is being
   identified.

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