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RFC 9678 - Forward Secrecy Extension to the Improved Extensible Authentication Protocol Method for Authentication and Key Agreement (EAP-AKA' FS)

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IETF - Internet Engineering Task Force

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RFC 9678: Forward Secrecy Extension to the Improved Extensible Authentication Protocol Method for Authentication and Key Agreement (EAP-AKA' FS)

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https://datatracker.ietf.org/doc/rfc9678/

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IETF Datatracker

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This document updates RFC 9048, "Improved Extensible Authentication Protocol Method for 3GPP Mobile Network Authentication and Key Agreement (EAP-AKA')", and its predecessor RFC 5448 with an optional extension providing ephemeral key exchange. The extension EAP-AKA' Forward Secrecy (EAP-AKA' FS), when negotiated, provides forward secrecy for the session keys generated as a part of the authentication run in EAP-AKA'. This prevents an attacker who has gained access to the long-term key from obtaining session keys established in the past. In addition, EAP-AKA' FS mitigates passive attacks (e.g., large-scale pervasive monitoring) against future sessions. This forces attackers to use active attacks instead.

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