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Re: [comanage-dev] CMPs and Attribute Release


Chronological Thread 
  • From: Scott Koranda <>
  • To: Benn Oshrin <>
  • Cc: comanage-dev <>
  • Subject: Re: [comanage-dev] CMPs and Attribute Release
  • Date: Thu, 13 Oct 2011 20:42:32 -0500

Hi,

> Consider the VO-as-Enterprise model (ie: LIGO, iPlant, ESWN, etc).
> Consider a CMP hosting multiple VOs (ie: COmanage).
>
> Our original thought was that Organizational Identities (ie:
> )
> would be CMP wide, and that all VOs hosted on
> the CMP would have access to all Organizational Identities. In the
> scenario where Organizational Attributes are basically self-asserted
> (ie: not being pulled from LDAP or SAML) this is fine.
>
> However, now consider the case where attributes are pulled from
> Organizational IdPs. There will be, presumably, some sort of
> attribute release policy whereby the IdP determines what attributes
> it is willing to release to what SP. We can ignore packaged
> attribute policies provided via federations here, because that won't
> cover all possible scenarios... we have to consider the worst case,
> which is point to point attribute release policy. In this worst
> case, the IdP will be agreeing to a policy with the VO, not the CMP.
>
> [The case where a CMP hosts only a set of related VOs with one
> encompassing policy reduces down to 1 CMP = 1 VO, and so does not
> change things.]
>
> [The VO-as-Federation model (ie: SWITCH, GakuNin) also reduces down
> to 1 CMP = 1 VO.]
>
> So what I think this means is that we need to update the COmanage
> data model so Organizational Identities are attached to COs. If
>
> wants to join both LIGO and ESWN, and both are
> hosted on the same COmanage CMP, then LIGO and ESWN will both have
> copies of
> 's
> attributes, subject to whatever
> relevant attribute release policies were put in place.
>

How much work will it be do you think to make that change and
all of the other changes it requires?

Scott



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