Internet DRAFT - draft-yan-emu-eap-multiple-psk
draft-yan-emu-eap-multiple-psk
EMU L. Yan, Ed.
Internet-Draft Huawei
Intended status: Standards Track 4 March 2024
Expires: 5 September 2024
EAP Multiple Pre-Shared Keys (EAP-MPSK) Method
draft-yan-emu-eap-multiple-psk-00
Abstract
This document defines an Extensible Authentication Protocol (EAP)
method for supporting the negotiation of a PSK among multiple PSKs.
Status of This Memo
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
1.2. Requirements Language . . . . . . . . . . . . . . . . . . 3
2. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Security Considerations . . . . . . . . . . . . . . . . . . . 3
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3
5. References . . . . . . . . . . . . . . . . . . . . . . . . . 3
5.1. Normative References . . . . . . . . . . . . . . . . . . 3
5.2. Informative References . . . . . . . . . . . . . . . . . 4
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 4
Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 4
1. Introduction
The existing PSK-based EAP methods, EAP-GPSK [RFC5433], EAP-PSK
[RFC4764], EAP-SAKE [RFC4763] and EAP-PAX [RFC4746], assumed that
only one PSK had been configured for the EAP peer and server. A
single PSK does not provide perfect forward secrecy [RFC5433].
Compromise of the PSK leads to compromise of recorded past sessions.
Moreover, compromise of the PSK enables the attacker to impersonate
the peer and the server, and it allows the adversary to compromise
future sessions. One solution is to use multiple PSKs between the
EAP peer and server.
Traditional manual configuration of PSKs lacks automation and is less
efficient. Currently, there are some new manners of configuring PSKs
more efficiently. Quantum keys generated by a quantum network can be
automatically obtained through a network and configured as PSKs. In
the mobile communication scenario, plenty of quantum keys can be
offline implanted into mobile terminals. In the post-quantum
scenario, each communication peer is typically assumed to have a list
of post-quantum PSKs [RFC8784]. If there are ample PSKs, using each
PSK only once will provide perfect forward secrecy. Moreover, the
attacker cannot impersonate the peer and the server by compromising a
used PSK; one PSK's compromise will not influence future sessions.
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Furthermore, the issue of PSK identity collisions should be
considered when managing multiple PSKs. PSKs can be configured in
different manners, for example, through traditional manual
configuration or obtained through quantum key generators. The PSK
identities in different configuration methods usually do not have a
unified plan. Thus, it is possible that a PSK identity may clash
with another PSK identity configured in a different manner. Even
obtained from different quantum key generators, the PSKs' identity
may have a collision. Thus, multiple PSKs should be managed by
category.
This document modifies the EAP-GPSK to support the negotiation of a
PSK among multiple PSKs.
1.1. Terminology
1.2. Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in
BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all
capitals, as shown here.
2. Overview
3. Security Considerations
4. IANA Considerations
5. References
5.1. Normative References
[RFC5433] Clancy, T. and H. Tschofenig, "Extensible Authentication
Protocol - Generalized Pre-Shared Key (EAP-GPSK) Method",
RFC 5433, DOI 10.17487/RFC5433, February 2009,
<https://www.rfc-editor.org/rfc/rfc5433>.
[RFC8784] Fluhrer, S., Kampanakis, P., McGrew, D., and V. Smyslov,
"Mixing Preshared Keys in the Internet Key Exchange
Protocol Version 2 (IKEv2) for Post-quantum Security",
RFC 8784, DOI 10.17487/RFC8784, June 2020,
<https://www.rfc-editor.org/rfc/rfc8784>.
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[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997,
<https://www.rfc-editor.org/rfc/rfc2119>.
[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
May 2017, <https://www.rfc-editor.org/rfc/rfc8174>.
5.2. Informative References
[RFC4746] Clancy, T. and W. Arbaugh, "Extensible Authentication
Protocol (EAP) Password Authenticated Exchange", RFC 4746,
DOI 10.17487/RFC4746, November 2006,
<https://www.rfc-editor.org/rfc/rfc4746>.
[RFC4764] Bersani, F. and H. Tschofenig, "The EAP-PSK Protocol: A
Pre-Shared Key Extensible Authentication Protocol (EAP)
Method", RFC 4764, DOI 10.17487/RFC4764, January 2007,
<https://www.rfc-editor.org/rfc/rfc4764>.
[RFC4763] Vanderveen, M. and H. Soliman, "Extensible Authentication
Protocol Method for Shared-secret Authentication and Key
Establishment (EAP-SAKE)", RFC 4763, DOI 10.17487/RFC4763,
November 2006, <https://www.rfc-editor.org/rfc/rfc4763>.
Acknowledgements
Contributors
Author's Address
Lei YAN (editor)
Huawei
Ruanjiandadao Road
Nanjing
210000
China
Email: ray.yanlei@huawei.com
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