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Subject: Shibboleth Architecture Draft
Dear SAMLers, For those of you who are curious about Shibboleth, the initial draft version of the Shibboleth Architecture is now on the Internet2 web site. See the note below for the URL and some notes about the state of the document. Shibboleth has much in common with SAML. For example we are hoping/expecting to use SAML queries and assertions. Shibboleth though is both narrower and broader than SAML: Our use cases are far more limited, but we go outside some the "edges" of SAML to include the notions of "attribute release policies" at the AA (a privacy issue) and "attribute acceptance policies" at the relying party. Comments would be most welcome. Regards, Marlena IBM/Tivoli PS There is also a specification document (also a draft) on the website. And there are lots of other documents -- but many are out of date and don't reflect the current architecture. (A website cleanup is supposed to occur sometime "soon".) PPS The website only has HTML for the arch doc. If you want a Word document (which is the source for the html), let me know. ---------------------- Forwarded by Marlena Erdos/Austin/Contr/IBM on 06/11/2001 11:48 AM --------------------------- Marlena Erdos 06/08/2001 04:58 PM To: Shibboleth Project <mace-shibboleth@internet2.edu> cc: From: Marlena Erdos/Austin/Contr/IBM@IBMUS Subject: Shibboleth Architecture Draft Dear Shibbers, The initial draft version of the Shibboleth Architecture is now on the web site. The URL is: http://middleware.internet2.edu/shibboleth/docs/draft-erdos-shibboleth-architecture-00.html The architecture doc describes the concepts and model of Shibboleth. It also describes but doesn't specify Shibboleth exchange messages and the behavior or Shibboleth components. There are two intended audiences: The first consists of technically-minded readers who want to get a "sense" of Shibboleth, and the second consists of those who want to understand Shibboleth in detail -- perhaps a prelude to their own implementation of one or more Shibboleth components This document is a first draft Unfortunately, I got very little feedback from the initial reviewers -- presumably due to their time constraints. And I added in a new section very recently (and revamped others) to account for a recent change in the design and this has not been reviewed at all. The upshot is that while I think the architecture doc generally well-represents the architecture we've discussed, debated, haggled over, there are undoubtably mistakes. I will collect corrections and re-issue the document. There are also some sections that need "filling in" (not too many) and I expect to add a new section on "Attribute Acceptance Policies". ("Attribute Acceptance Policies" is a new topic some of us have been discussing (albeit off-list).) Finally, you'll note some "XXX" markings. These notations are bookmarks of sorts, and they mean "Fix this!" You can ignore them (or suggest text that will allow me to remove the dreaded XXXs :-)). Please send your corrections and comments (and compliments) to either me or the list. I am aiming for clarity so if something is correct but not clear, I want to hear about it too. Regards, Marlena
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