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:
Aug. 14, 2012
Filed:
Mar. 26, 2008
Philippe Jean-paul Golle, San Francisco, CA (US);
Jessica N. Staddon, Redwood City, CA (US);
Richard Chow, Sunnyvale, CA (US);
Philippe Jean-Paul Golle, San Francisco, CA (US);
Jessica N. Staddon, Redwood City, CA (US);
Richard Chow, Sunnyvale, CA (US);
Palo Alto Research Center Incorporated, Palo Alto, CA (US);
Abstract
One embodiment of the present invention provides a system which allows a document owner to redact content from a document and allows a recipient of the redacted document to challenge the appropriateness of the redaction. During operation, the system allows the document owner to redact a string Mfrom location i in the document. In doing so, the system produces a commitment C=C(M, R) based on string Mand a string Rused as randomness and communicates Cto the recipient. When the recipient challenges the redaction, the system receives a topic string T from the recipient, and produces a string R. The system then communicates Rto the recipient, thereby allowing the recipient to produce a commitment C=C(T, R) based on strings T and R, and compare Cwith C. Comparing commitment Cwith Callows the recipient to test redactions for string equality.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile