Patents by Inventor Jan Leonhard Cameniisch

Jan Leonhard Cameniisch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8577029
    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.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: November 5, 2013
    Assignee: International Business Machines Corporation
    Inventors: Jan Leonhard Cameniisch, Maria Dubovitskaya, Gregory Neven, Greg Zaverucha