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Wednesday, May 07, 2008 1:06 AM

Claims propagation: Kirchhoff or maxflow?

In the last week or so Paul Madsen made at least a couple of posts with strong visual components: one that resumed my old 2005 post on a notation for message crypto, the other on Feynman diagrams . Nice! Paul, when I am in that mood I find especially
Posted by vibro | 2 Comments
Monday, May 05, 2008 5:06 PM

Claim types: a coarse taxonomy

In short. I make some considerations about what kind of info ends up in a claim, and the things we expect will happen when those info are processed. I then describe what I call infrastructure claims, for the lack of a better term, and their role in authorization;
Posted by vibro | 3 Comments
Sunday, April 20, 2008 12:59 AM

Cloud Computing and Identity

On a flight between Seattle and Tokyo. I've just put down The Big Switch , and decided it's time to write about cloud computing and how identity management is going to play a key role for the success of the new paradigm. As you go though this post, please
Posted by vibro | 4 Comments
Friday, April 11, 2008 12:09 AM

April the 23rd: session & chalktalk at the Singapore's Regional Architects Forum

On the 23rd I'll be in Singapore, practically my third home, and will present at the Singapore's Regional Architect Forum (the famous RAF). There is something in that country that charmed me already during my first visit in '89, and every time I have
Posted by vibro | 2 Comments
Friday, April 11, 2008 12:07 AM

April the 22nd: session at the IASA IT Architect Regional Conference in Kuala Lumpur

In a couple of weeks I'll be in Kuala Lumpur, at the IASA's IT Architect Regional Forum Conference ; I will present on identity in the context of S+S and cloud services, which happens to be the topic that intrigues me the most nowadays. I am really excited
Posted by vibro | 1 Comments
Wednesday, April 02, 2008 1:40 AM

(Re)Focusing

I am delighted to announce a slight change in my role: from now on I'll focus on identity architecture, especially in the context of S+S and cloud services. YEEEEEES!!! If you are a regular reader of this blog you may have gotten the impression it was
Posted by vibro | 2 Comments
Monday, March 31, 2008 6:23 PM

Voting for the Italian government election via mail

It's that time again. Few months ago the Italian government fell, and as a good citizen I am called to the right-duty of casting my vote for electing the new one. There's a little detail, though: while in the past that meant taking a short walk through
Posted by vibro | 1 Comments
Monday, March 24, 2008 9:27 AM

Perspectives.on10.net: podcast interview with Jon Udell on identity & "Understanding Windows CardSpace"

Jon Udell recently launched a new interesting format on the website perspectives.on10.net. Perspectives is a series of in-depth conversations with passionate innovators. Most work for Microsoft; some work elsewhere; all are advancing the state of the
Posted by vibro | 1 Comments
Tuesday, March 11, 2008 4:28 PM

The Tao of Authentication (Part III - last)

(continues from Part I and Part II ) Finally we've lined up all the elements we need for understanding how we can get rid of the 1-2-3 tyranny, and deal with our business requirements directly instead of relying on an old model that forces us to perform
Posted by vibro | 5 Comments
Monday, March 10, 2008 11:09 AM

WCF & REST at MIX08: The Tale of MySpace APIs

[Update: we received notice that not all of you were able to download the video . We fixed the issue already friday night, it should work for everybody. Enjoy! Thanks to Terje for the first headsup] Yesterday we finally had the session about the making
Posted by vibro | 5 Comments
Monday, March 10, 2008 1:48 AM

The Tao of Authentication (Part II)

(continues from Part I ) You can consider this post and the fine grained analysis we made in Part I as a down payment for grasping the implications we'll see in Part III, which I plan to post in few hours (almost done). I was planning to have just 2 parts,
Posted by vibro | 6 Comments
Monday, February 25, 2008 7:00 AM

NoSSL sample: a class for checking signatures of tokens sent to the RP in clear HTTP

[Edit: attached the sample app files] In short: I show a simple class that checks the signature of self issued tokens sent on a normal HTTP connection (as opposed to HTTPS); the same class takes care of generating a UniqueID and giving access to claims.
Posted by vibro | 6 Comments
Attachment(s): NoSSL.zip
Wednesday, February 20, 2008 9:12 PM

The Tao of Authentication (Part I)

From time to time it's healthy to challenge the assumptions, and look at (allegedly) familiar things with new eyes. Few weeks ago I had to do just that with the idea of authentication : I wanted to shake a bit an audience of architects, and make them
Posted by vibro | 16 Comments
Thursday, February 07, 2008 8:02 AM

Mike jumps on the OpenID Foundation board of directors

Good news everyone! Our very own Mike will represent Microsoft on the OpenID Foundation board of directors, which to me seems a natural choice given all the work he has done in that space (for example, this ). Wait a minute, a Microsoft representative
Posted by vibro | 1 Comments
Monday, February 04, 2008 1:01 AM

The entire chapter 2 of "Understanding Windows CardSpace" published on Code Project

Few days ago I've been notified that the 2nd chapter of our book "Understanding Windows CardSpace" is now available for free online , on the pages of Code Project (takes some time to load from my connection, don't give up). That's a very big chapter,
Posted by vibro | 3 Comments
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