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draft-ietf-oauth-step-up-authn-challenge-17

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OAuth 2.0 Step Up Authentication Challenge Protocol (Internet-Draft, 2023)

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OAuth 2.0 Step Up Authentication Challenge Protocol

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https://datatracker.ietf.org/doc/html/draft-ietf-oauth-step-up-authn-challenge

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IETF Datatracker

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It is not uncommon for resource servers to require different authentication strengths or recentness according to the characteristics of a request. This document introduces a mechanism that resource servers can use to signal to a client that the authentication event associated with the access token of the current request does not meet its authentication requirements and, further, how to meet them. This document also codifies a mechanism for a client to request that an authorization server achieve a specific authentication strength or recentness when processing an authorization request.

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