I-D ACTION:draft-ietf-mipshop-handover-key-00.txt

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This draft is a work item of the Mobility for IP:
Performance, Signaling and Handoff Optimization Working
Group of the IETF.

	Title		: Distributing a Symmetric FMIPv6 Handover Key using
SEND 
	Author(s)	: J. Kempf, et al.
	Filename	: draft-ietf-mipshop-handover-key-00.txt
	Pages		: 10
	Date		: 2007-3-2
	
     Fast Mobile IPv6 requires that a Fast Binding Update is
secured 
     using a security association shared between an Access
Router and a 
     Mobile Node in order to avoid certain attacks. In this
document, a 
     method for distributing a shared key to secure this
signaling is 
     defined. The method utilizes the RSA public key that
the Mobile 
     Node used to generate its Cryptographically Generated
Address in 
     SEND. The RSA public key is used to encrypt a shared
key sent from 
     the Access Router to the Mobile Node prior to handover.
The 
     ability of the Mobile Node to decrypt the shared key
verifies its 
     possession of the private key corresponding to the CGA
public key 
     used to generate the address. This allows the Mobile
Node to use 
     the shared key to sign and authorize the routing
changes triggered 
     by the Fast Binding Update.  
   


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