Liquid Machines, Inc.

Michael D Smith

Vasanth Bala

Edward J Gaudet

James Schoonmaker

Robert Ian Morgan

Fajen Kyne

Christopher B Barclay

Norbert Leser

Arnold S Epstein

In a network of intermittently-connected computers, a method and apparatus for maintaining and managing control over data objects authored, accessed, and altered by users in dynamic, distributed, and collaborative contexts. The invention method and apparatus attach to each data object an identification of a respective control policy. Each control policy comprises at least an indication of a subset of the users who may access the data object, an indication of the privileges granted to each subset of users able to access the data object, and an indication of a subset of users who may define or edit the control policy. The invention method and apparatus separate the management of the control policies of data objects from the creation and use of the data objects. The invention method and apparatus automate common policy changes, distribution of policy changes to the enforcement agents, and propagation of control policies to derivative works.

Computer method and apparatus for managing data objects in a distributed context

A content processor application is loaded into memory from a master image to form a runtime content processor application image. An integration agent dynamically integrates a protection agent into the loaded runtime content processor application image to form a customized content processor application with extended functionality. Only the runtime content processor application image is extended with the protection agent&#x2014;the application master image remains unaltered.

Method for protecting digital content from unauthorized use by automatically and dynamically integrating a content-protection agent

An application module is rewritten by overwriting executable code at identified authorization points with control transfers to a managed challenge system such that a rewritten application module results. The managed challenge system is constructed to include the overwritten executable code, and performs an authorization check upon acquiring control from an authorization point. The managed challenge system is linked to the rewritten application module.

Method and system for protecting software applications against static and dynamic software piracy techniques

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Lexington, MA, United States of America

Michael D Smith