HOKEY

RFC 5247 is updated to define and clarify EAP Session-Id derivation for multiple Extensible Authentication Protocol (EAP) methods. The derivation of Session-Id was not given for EAP Subscriber Identity Module (EAP-SIM) or EAP Authentication and Key Agreement (EAP-AKA) when using the fast reconnect exchange instead of full authentication. The derivation of Session-Id for full authentication is clarified for both EAP-SIM and EAP-AKA. The derivation of Session-Id for Protected EAP (PEAP) is also given. The definition for PEAP follows the definition for other TLS-based EAP methods.

The EAP Re-authentication Protocol (ERP) defines extensions to the Extensible Authentication Protocol (EAP) to support efficient re-authentication between the peer and an EAP Re-authentication (ER) server through a compatible authenticator. This document specifies Diameter support for ERP. It defines a new Diameter ERP application to transport ERP messages between an ER authenticator and the ER server, and a set of new Attribute-Value Pairs (AVPs) that can be used to transport the cryptographic material needed by the re-authentication server.

This document updates the Internet Key Exchange Protocol version 2 (IKEv2) described in RFC 5996. This extension allows an IKE Security Association (SA) to be created and authenticated using the Extensible Authentication Protocol (EAP) Re-authentication Protocol extension, as described in RFC 6696. This document defines an Experimental Protocol for the Internet community.

Some Authentication, Authorization, and Accounting (AAA) applications require the transport of cryptographic keying material. This document specifies a set of Attribute-Value Pairs (AVPs) providing native Diameter support of cryptographic key delivery. [STANDARDS-TRACK]

The Extensible Authentication Protocol (EAP) is a generic framework supporting multiple types of authentication methods. In systems where EAP is used for authentication, it is desirable to avoid repeating the entire EAP exchange with another authenticator. This document specifies extensions to EAP and the EAP keying hierarchy to support an EAP method-independent protocol for efficient re- authentication between the peer and an EAP re-authentication server through any authenticator. The re-authentication server may be in the home network or in the local network to which the peer is connecting. [STANDARDS-TRACK]

The Handover Keying (HOKEY) Working Group seeks to minimize handover delay due to authentication when a peer moves from one point of attachment to another. Work has progressed on two different approaches to reduce handover delay: early authentication (so that authentication does not need to be performed during handover), and reuse of cryptographic material generated during an initial authentication to save time during re-authentication. A basic assumption is that the mobile host or "peer" is initially authenticated using the Extensible Authentication Protocol (EAP), executed between the peer and an EAP server as defined in RFC 3748.

This document defines the HOKEY architecture. Specifically, it describes design objectives, the functional environment within which handover keying operates, the functions to be performed by the HOKEY architecture itself, and the assignment of those functions to architectural components. It goes on to illustrate the operation of the architecture within various deployment scenarios that are described more fully in other documents produced by the HOKEY Working Group. This document is not an Internet Standards Track specification; it is published for informational purposes.

The Extensible Authentication Protocol (EAP) is a generic framework supporting multiple types of authentication methods.

The EAP Re-authentication Protocol (ERP) specifies extensions to EAP and the EAP keying hierarchy to support an EAP method-independent protocol for efficient re-authentication between the peer and an EAP re-authentication server through any authenticator.

Authenticated Anticipatory Keying (AAK) is a method by which cryptographic keying material may be established upon one or more Candidate Attachment Points (CAPs) prior to handover. AAK uses the AAA infrastructure for key transport.

This document specifies the extensions necessary to enable AAK support in ERP. [STANDARDS-TRACK]

In order to derive a Domain-Specific Root Key (DSRK) from the Extended Master Session Key (EMSK) generated as a side effect of an Extensible Authentication Protocol (EAP) method, the EAP peer must discover the name of the domain to which it is attached.

This document specifies a Dynamic Host Configuration Protocol Version 6 (DHCPv6) option designed to allow a DHCPv6 server to inform clients using the EAP Re-authentication Protocol (ERP) EAP method of the name of the local domain for ERP. [STANDARDS-TRACK]

Extensible Authentication Protocol (EAP) early authentication may be defined as the use of EAP by a mobile device to establish authenticated keying material on a target attachment point prior to its arrival. This document discusses the EAP early authentication problem in detail. This document is not an Internet Standards Track specification; it is published for informational purposes.

This document describes an abstract mechanism for delivering root keys from an Extensible Authentication Protocol (EAP) server to another network server that requires the keys for offering security protected services, such as re-authentication, to an EAP peer. The distributed root key can be either a usage-specific root key (USRK), a domain-specific root key (DSRK), or a domain-specific usage- specific root key (DSUSRK) that has been derived from an Extended Master Session Key (EMSK) hierarchy previously established between the EAP server and an EAP peer. This document defines a template for a key distribution exchange (KDE) protocol that can distribute these different types of root keys using a AAA (Authentication, Authorization, and Accounting) protocol and discusses its security requirements. The described protocol template does not specify message formats, data encoding, or other implementation details. It thus needs to be instantiated with a specific protocol (e.g., RADIUS or Diameter) before it can be used. [STANDARDS-TRACK]

The Extensible Authentication Protocol (EAP) defined the Extended Master Session Key (EMSK) generation, but reserved it for unspecified future uses. This memo reserves the EMSK for the sole purpose of deriving root keys. Root keys are master keys that can be used for multiple purposes, identified by usage definitions. This document also specifies a mechanism for avoiding conflicts between root keys by deriving them in a manner that guarantees cryptographic separation. Finally, this document also defines one such root key usage: Domain-Specific Root Keys are root keys made available to and used within specific key management domains. [STANDARDS-TRACK]

This document describes the Handover Keying (HOKEY) re-authentication problem statement. The current Extensible Authentication Protocol (EAP) keying framework is not designed to support re-authentication and handovers without re-executing an EAP method. This often causes unacceptable latency in various mobile wireless environments. This document details the problem and defines design goals for a generic mechanism to reuse derived EAP keying material for handover. This memo provides information for the Internet community.