The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 2009
Filed:
Apr. 10, 2002
Glenn E. Brew, Boca Raton, FL (US);
Marco M. Hurtado, Boca Raton, FL (US);
David Medina, Coral Springs, FL (US);
Jonathan P. Munson, Putnam Valley, NY (US);
Stefan Nusser, Los Altos, CA (US);
Giovanni Pacifici, New York, NY (US);
Alaa S. You{grave Over (S)}sef, Valhalla, NY (US);
Glenn E. Brew, Boca Raton, FL (US);
Marco M. Hurtado, Boca Raton, FL (US);
David Medina, Coral Springs, FL (US);
Jonathan P. Munson, Putnam Valley, NY (US);
Stefan Nusser, Los Altos, CA (US);
Giovanni Pacifici, New York, NY (US);
Alaa S. You{grave over (s)}sef, Valhalla, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system for providing persistent access control of protected content is disclosed. The method on a client system includes sending a first request for authentication of the client to a server system. Subsequently, the client is authenticated by the server. Next, a user on the client attempts to access a file comprising a trailer and content encrypted with an encrypting key. Then, a second request for access to the content is sent to the server by the client, wherein an identifier from the trailer is included in the second request. The identifier identifies the content or an access control policy of the content. The server determines that the second request is in accordance with an access control policy associated with the content, and grants access to the content. Lastly, the client accesses the content in accordance with the access control policy.