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. 05, 2013
Filed:
Sep. 09, 2011
Jan Leonhard Cameniisch, Thalwil, CH;
Maria Dubovitskaya, Zurich, CH;
Gregory Neven, Oberrieden, CH;
Greg Zaverucha, Waterloo, CA;
Jan Leonhard Cameniisch, Thalwil, CH;
Maria Dubovitskaya, Zurich, CH;
Gregory Neven, Oberrieden, CH;
Greg Zaverucha, Waterloo, CA;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method, apparatus, and a computer readable storage medium having computer readable instructions to carry out the steps of the method for anonymous access to a database. Each record of the database has different access control permissions (e.g. attributes, roles, or rights). The method allows users to access the database record while the database does not learn who queries a record. The database does not know which record is being queried: (i) the access control list of that record or (ii) whether a user's attempt to access a record had been successful. The user can only obtain a single record per query and only those records for which he has the correct permissions. The user does not learn any other information about the database structure and the access control lists other than whether he was granted access to the queried record, and if so, the content of the record.