Electronic content rights with and-or expression

Details Electronic content rights with and-or expression Electronic content rights with and-or expression

2006-12-12

2006-12-12

Trammell, James P. (Department: 3621)

Data processing: financial, business practice, management, or co

Business processing using cryptography

Usage protection of distributed data files

C705S050000, C705S051000, C705S052000, C705S053000, C705S054000, C705S055000, C705S056000, C705S057000, C705S058000, C713S193000, C380S232000

Reexamination Certificate

active

07149721

ABSTRACT:
Methods and apparatus for creating a license defining permissions to use electronic content. The methods include selecting a plurality of habitat types, each an aspect of a user environment to which a license can be bound, the selection based on input from a retail customer; determining one or more habitat values and relations for each selected type; and creating a license to use the electronic content, the license including an and-or logic expression of habitat terms, each term containing one of the selected types and its set of corresponding values and relations. Each habitat term may include a key for decrypting or unlocking the electronic content. In another aspect, the methods include receiving from a retail customer an input selecting habitat types and one or more habitat values for each selected type; and requesting from a server a license file to permit use of an electronic content, the license file including an and-or logic expression of habitat terms, each term containing one of the selected types and its corresponding values. In another aspect, the methods include receiving electronic content at a user computer; receiving a license file permitting use of the electronic content at the user computer, the license file including an and-or logic expression of habitat terms, each term containing a set of access permissions; extracting the set of permissions from an evaluation of the expression that renders the expression true; and allowing an end user to access the electronic content according to the extracted permissions.

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