Understanding Windows CardSpace: An Introduction to the Concepts and Challenges of Digital Identities

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Vittorio Bertocci, Garrett Serack, Caleb Baker

"Understanding Windows CardSpace: An Introduction to the Concepts and Challenges of Digital Identities"

Forms are commonly used in websites
to collect information from a user for processing. Consider
the following line:

228 CardSpace Implementation
The attributes set on the form element specify where the token
will be processed. The method attribute is set to post, which
means when the Submit button in the form is clicked, the values
of the elements in the form will be posted back to the Web
server for processing. The action attribute speci?¬?es the page to
which the data will be sent. In this case, it is sent to
TokenProcessingPage.aspx. For another example of a page
that uses a form post, see the section ???HTTP and HTTPS: The
King Is Naked??? from Chapter 1. It shows how a form post works
when a username and a password are used.
When the form is posted, the elements inside the form are
posted as name value pairs. In the post, the name that is used to
identify the token is the name set on the Information Card
browser extension. In the preceding examples, it is
'CardSpaceToken'. Details about how the posted data is
processed by the website are covered later in this chapter.
How Are the Extension Properties Used?
Let??™s take a further look at the properties on an Information Card
extension object.

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Vittorio Bertocci, Garrett Serack, Caleb Baker

"Understanding Windows CardSpace: An Introduction to the Concepts and Challenges of Digital Identities"