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:
Mar. 09, 2010
Filed:
Aug. 31, 2004
Karen W. Brannon, Palo Alto, CA (US);
Hui-i Hsiao, Saratoga, CA (US);
Huong T. Morris, Los Gatos, CA (US);
Karen W. Brannon, Palo Alto, CA (US);
Hui-I Hsiao, Saratoga, CA (US);
Huong T. Morris, Los Gatos, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A content management system integrated with a web caching proxy that delivers content according to access control rules. An access control token is generated using a secret key when a user selects a desired object (to be provided only upon token validation, thus the object retrieval and delivery task can be delegated). However, tokens for other content and/or for other users could be generated by a rogue resource manager. If the desired object is already cached, the proxy asks the resource manager to validate the token and then selectively provides the desired object without contacting a library server. Alternately, the proxy itself performs the token validation, but must coordinate with the library server to ensure it has the latest secret key. Finally, the tokens may contain digital signatures generated with a private key and validated with a corresponding public key, so that private keys need not be distributed.