Patent ID: 7010681
Filing Date: 2006-03-07
Classification: H04L

Abstract:
1. A method of using structured documents to specify selective encryption requirements for document content to be transmitted from a server to a client, comprising steps of: identifying one or more security-sensitive document content sections in each of a plurality of structured documents encoded in a markup language by delimiting each of the security-sensitive sections in each of the structured documents using markup language tag syntax, wherein the markup language tag syntax is encoded in the markup language and indicates a security level of the delimited security-sensitive section; receiving, at the server from a requester located at the client, a request for a particular one of the structured documents; determining a maximum security level for which the requester is authorized; filtering out, from the requested document, all of the identified security-sensitive sections for which the indicated security level is higher than the determined maximum security level for which the requester is authorized, thereby creating a filtered document; and if the filtered document is not empty, performing the steps of: