Subject: I-D ACTION:draft-dang-nistkdf-01.txt

From: [email-masked]
Date: Tue, 27 Jun 2006 15:50:01 -0400

A New Internet-Draft is available from the on-line Internet-Drafts directories.

	Title		: Hash-Based Key Derivation (HKD)
	Author(s)	: Q. Dang, T. Polk
	Filename	: draft-dang-nistkdf-01.txt
	Pages		: 29
	Date		: 2006-6-27
	
This draft specifies two Key Derivation Functions 
(KDFs) that may be used to derive symmetric keying 
material for participating parties from a secret value 
and application specific information. Each KDF is 
based on a concatenation technique and a secure hash 
function. The length in bits of secret keying material 
that can be generated by either of the KDFs is limited 
to (2**32 - 1) times the length in bits of the output 
block of the hash function. The derived keying 
material is a concatenation of the outputs of the 
hashing operations. Outputs from the KDFs are either 
"Invalid" or desired secret keying material. 

The HKDFs specified in this document are intended for 
use in scenarios where the communicating parties 
derive keying material for their own use.  This 
specification is not intended for implementation of 
key hierarchies.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-dang-nistkdf-01.txt

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