Patents by Inventor Paolo Dal Checco

Paolo Dal Checco 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).

  • Group signature scheme with improved efficiency, in particular in a join procedure
    Patent number: 8245047
    Abstract: A method for managing a group signature scheme includes in a setup procedure for group initialization, generating, by a group manager, a group public key. In a join procedure for the group manager to add a new member to the group, the method includes generating by the new member, user information, and providing the generated user information to the group manager, and computing, by the group manager, membership information for the new member based on the user information received by the new member and on the group public key, and providing to the new member the computed membership information. In particular, the membership information is computed, by the group manager, as a function of the inverse of a given hash function of the user information. In a signing procedure for a group member to sign a message on behalf of the group, the method includes: using, by the group member, the membership information and the user information.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: August 14, 2012
    Assignee: Telecom Italia S.p.A.
    Inventors: Pier Luigi Zaccone, Manuel Leone, Ettore Caprella, Francesco Bergadano, Davide Cavagnino, Paolo Dal Checco
  • Secure logging for irrefutable administration
    Patent number: 7770032
    Abstract: A method for protecting sensitive data in an entry of a log file for later audit, which includes encrypting the sensitive data in the log entry by using a random cryptographic key for each auditor authorized to access the log entry, encrypting the random cryptographic key by using an auditor's personal cryptographic key, and for each auditor not authorized to access the log entry, encrypting a fake cryptographic key having the same properties as the random cryptographic key by using an auditor's personal cryptographic key.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: August 3, 2010
    Assignee: Telecom Italia S.p.A.
    Inventors: Pasquale Andrea Nesta, Luigi Nesta, legal representative, Miranda Aurigemma, legal representative, Giovanna Patrizia Nesta, legal representative, Pier Luigi Zaccone, Paolo Dal Checco, Davide Cavagnino, Francesco Bergadano, Michele Miraglia
  • Group Signature Scheme With Improved Efficiency, in Particular in a Join Procedure
    Publication number: 20090222668
    Abstract: A method for managing a group signature scheme includes in a setup procedure for group initialization, generating, by a group manager, a group public key. In a join procedure for the group manager to add a new member to the group, the method includes generating by the new member, user information, and providing the generated user information to the group manager, and computing, by the group manager, membership information for the new member based on the user information received by the new member and on the group public key, and providing to the new member the computed membership information. In particular, the membership information is computed, by the group manager, as a function of the inverse of a given hash function of the user information. In a signing procedure for a group member to sign a message on behalf of the group, the method includes: using, by the group member, the membership information and the user information.
    Type: Application
    Filed: December 19, 2005
    Publication date: September 3, 2009
    Inventors: Pier Luigi Zaccone, Manuel Leone, Ettore Caprella, Francesco Bergadano, Davide Cavagnino, Paolo Dal Checco
  • Secure Logging For Irrefutable Administration
    Publication number: 20070288768
    Abstract: A method for protecting sensitive data in an entry of a log file for later audit, which includes encrypting the sensitive data in the log entry by using a random cryptographic key for each auditor authorized to access the log entry, encrypting the random cryptographic key by using an auditor's personal cryptographic key, and for each auditor not authorized to access the log entry, encrypting a fake cryptographic key having the same properties as the random cryptographic key by using an auditor's personal cryptographic key.
    Type: Application
    Filed: April 6, 2004
    Publication date: December 13, 2007
    Inventors: Pasquale Nesta, Luigi Nesta, Miranda Aurigemma, Giovanna Nesta, Pier Zaccone, Paolo Dal Checco, Davide Cavagnino, Francesco Bergadano, Michele Miraglia