It might be better to use a label other than "key expansion" in the KDF
since that is already used in TLS.
Mike
Pascal Urien wrote:
Dear all,
The draft http://www.ietf.org/internet-drafts/draft-urien-tls-keygen-00.txt
proposes a keying infrastructure based on the TLS protocol.
It suggests defining an additional Key Distribution Function (KDF)
in order to deliver a set of cryptographic keys.
In a peer to peer mode keys are directly produced as inputs of
the KDF functions.
For centralized architectures they are delivered through containers,
secured with keys derived from the KDF function.
I will attend to the next IETF meeting in Dublin, and i hope to present
more precisely the scope of this proposal
Best Regards
Pascal
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