A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Handover Keying Working Group of the IETF.
Title : Specification for the Derivation of Root Keys from an Extended Master Session Key (EMSK)
Author(s) : J. Salowey, et al.
Filename : draft-ietf-hokey-emsk-hierarchy-05.txt
Pages : 19
Date : 2008-04-23
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 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 guarantee 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.
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