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Secure XML: The New Syntax for Signatures and Encryption by Kitty Niles, Donald E. Eastlake

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11.1. P3P XMLDSIG

P3P, the Platform for Privacy Preferences [P3P], provides a syntax for Web sites to specify their privacy policies in a standard format. A privacy policy indicates what information the Web site retains and how it uses that information. P3P seeks to inform Web services users of the available policies of the sites they visit. Users can select among the available policies or refuse to use the offered service if no acceptable policy is acceptable. The intention in standardizing the expression of privacy policies is to enable the automation of such decisions.

Clearly, user assurance of the authenticity of such privacy policy information is desirable for any user who wants to have confidence in the policy descriptions and, potentially, ...

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