[Hipsec] Follow-up on 4843bis / ORCHIDv2

"Laganier, Julien" <julienl@qualcomm.com> Tue, 30 March 2010 21:28 UTC

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From: "Laganier, Julien" <julienl@qualcomm.com>
To: "hipsec@ietf.org" <hipsec@ietf.org>
Date: Tue, 30 Mar 2010 14:28:45 -0700
Thread-Topic: Follow-up on 4843bis / ORCHIDv2
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Cc: "pekka.nikander@ericsson.com" <pekka.nikander@ericsson.com>
Subject: [Hipsec] Follow-up on 4843bis / ORCHIDv2
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Folks,

As proposed at last IETF meeting, it seems we have a way forward with 4843bis:

1. HIP WG to have a 4843bis deliverable that introduces crypto-agility
   - Request permanent allocation of a new /28 prefix for ORCHIDv2
   - Introduces ORCHIDv2 Generation Algorithm (OGA), defined in a given Context 
	 - (e.g. HIP in RFC5201 bis)
   - Define new ORCHIv2 Generation Procedure:
        Input := any bitstring 
        ORCHID Input := Context ID | Input 
        ORCHID Ouput := OGA( ORCHID Input ) 
        ORCHID := Prefix | OGA Type | Encode_96( ORCHID Ouput)

=> question mark: Do we let the current 2001:10::/28 allocation expire? I recommend we do as it will make it easier to obtain a permanent allocation.

2. HIP WG to allocate OGA Type 1 as SHA1 in 5201bis and keep other values as unallocated, allocation requiring IETF specification.

=> question mark: Do we start with SHA-256 instead?

--julien