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draft-ietf-emu-aka-pfs-12

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Forward Secrecy for the Extensible Authentication Protocol Method for Authentication and Key Agreement (EAP-AKA' FS) (Internet-Draft, 2025)

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Forward Secrecy for the Extensible Authentication Protocol Method for Authentication and Key Agreement (EAP-AKA' FS)

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https://datatracker.ietf.org/doc/html/draft-ietf-emu-aka-pfs-12

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IETF Datatracker

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This document updates RFC 9048, the improved Extensible Authentication Protocol Method for 3GPP Mobile Network Authentication and Key Agreement (EAP-AKA'), with an optional extension providing ephemeral key exchange. Similarly, this document also updates the earlier version of the EAP-AKA' specification in RFC 5448. 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, assuming these have been properly deleted. 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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