Re: SOI QUESTION: 4.2 Creating multiple SAs for a single pair of entities

["Housley, Russ" <rhousley@rsasecurity.com>]

>Please discuss and answer this question:
>
>
>4.2 Creating multiple SAs for a single pair of entities
>
>4.2.A) How important is it that SOI be able to create multiple SA's
>between a pair of entities "cheaply"?

This is very important.  I assume that "cheaply" means that cracking the 
keying material associated with one of these related SAs MIGHT disclose 
information that could help the attacker learn the keying material 
associated with the other related SAs.  That is, there is no PFS.

In my view, the scenarios provide justification.

Russ