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I-D ACTION:draft-ietf-ipsec-revised-enc-mode-01.txt

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This draft is a work item of the IP Security Protocol Working Group of the
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	Title		: A revised encryption mode for ISAKMP/Oakley
	Author(s)	: H. Krawczyk, P. Cheng, R. Canetti
	Filename	: draft-ietf-ipsec-revised-enc-mode-01.txt
	Pages		: 6
	Date		: 1997-08-05
	
The ISAKMP/Oakley document [HC97] describes a proposed standard for
   using the Oakley Key Exchange Protocol in conjunction with ISAKMP to
   obtain authenticated and secret keying material for use with ISAKMP,
   and for other security associations such as AH and ESP for the IETF
   IPsec DOI.
 
   The public-key encryption method of carrying out Phase 1 of the key
   exchange in the ISAKMP/Oakley document provides significant security
   advantages over the other alternatives and should be the method of
   choice in many implementations. Unfortunately, as currently
   described in [HC97] the method requires two public key
   encryption and decryption operations from both the Initiator and
   the Responder. The present document describes a small modification
   to this method. The resulting scheme requires only one public key
   encryption and decryption operation from each party, while maintaining
   (and even improving on) the strong security properties of the
   ISAKMP/Oakley public-key encryption mode.
 
   Remark: This document is NOT self-contained, it is intended as an
   addendum to the authentication methods defined in [HC97].
   In particular, it uses notation and definitions of [HC97].
   Thus, it is best read in conjunction with [HC97].

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