Re: [plasma] Levels of assurance

Leif Johansson <leifj@mnt.se> Wed, 26 October 2011 07:37 UTC

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Date: Wed, 26 Oct 2011 09:37:26 +0200
From: Leif Johansson <leifj@mnt.se>
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Subject: Re: [plasma] Levels of assurance
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On 10/25/2011 08:56 PM, Fitch, Scott C wrote:
> Is it necessary to require levels of assurance in the Basic Policy requirements? I definitely think it's appropriate for Advanced Policies. But I wonder whether including levels of assurance in Basic Policies will impede adoption.
> 
> Also, the fact that there are multiple LOA frameworks out there makes it difficult to meet the requirement to NOT require a priori bilateral agreements between the sender and recipient for Basic Policies. If the sender and recipient use different LOA scales, then some type of prior agreement must be in place to map the two scales. I don't think plasma wants to get into the business of creating a standard LOA mapping for interoperability.
> 

Supporting multiple LOA frameworks is partly a technical issue and
partly a policy issue. The technical issue is that we need a way to
communicate LOA per transaction.

In SAML WebSSO there are technical controls (AuthenticationContext)
for communicating LOA [1]

[1]
http://docs.oasis-open.org/security/saml/Post2.0/sstc-saml-assurance-profile.html

	Cheers Leif
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