internetnews.com: Web Services Authentication Takes Leap Forward

"The OASIS standards consortium Tuesday took another leap forward toward securing Web services with the ratification of Extensible Access Control Markup Language 1.0 (XACML) as an OASIS Open Standard.

"XACML is a security standard which allows developers to write and enforce information access policies, making it a key component in the development of authorization infrastructures and a foundational step in the creation of federated authentication environments.

"The XACML specification describes both an access control policy language (which allows developers to specify who can do what and when), and a request/response language which expresses queries about whether a particular access should be allowed and describes the answers to those queries..."

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