Improved Extensible Authentication Protocol Method for 3GPP Mobile Network Authentication and Key Agreement (EAP-AKA')
2019
The 3GPP Mobile Network Authentication and Key Agreement (AKA) is the
primary authentication mechanism for devices wishing to access mobile
networks. RFC 4187 (EAP-AKA) made the use of this mechanism possible
within the Extensible Authentication Protocol (EAP) framework. RFC
5448 (EAP-AKA') was an improved version of EAP-AKA. This memo
replaces the specification of EAP-AKA'. EAP-AKA' was defined in
RFC 5448 and updated EAP-AKA RFC 4187. As such this document obsoletes
RFC 5448 and updates RFC 4187. EAP-AKA' differs from EAP-AKA by
providing a key derivation function that binds the keys derived within
the method to the name of the access network. The key derivation
function has been defined in the 3rd Generation Partnership Project
(3GPP). EAP-AKA' allows its use in EAP in an interoperable manner.
EAP-AKA' is also an algorithm update, as it employs SHA-256 / HMAC-
SHA-256 instead of SHA-1 / HMAC- SHA-1 as in EAP-AKA. This version of
EAP-AKA' specification specifies the protocol behaviour for 5G
deployments as well.
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