Patents by Inventor Laurie E. Law

Laurie E. Law 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).

  • Method of identifying invalid digital signatures involving batch verification
    Patent number: 7890763
    Abstract: Method of identifying invalid digital signatures involving batch verification by receiving digital messages, digital signatures, and signer identifiers, computing Z0 as a function of the received information, and determining if the digital signatures are valid. If so, stopping. If not, assigning a signature identifier to each digital signature, setting w equal to 1, computing Zw as a function of the received information and signature identifiers, and searching for a multiplicative relationship amongst Z0, Z1, . . . , Zw. If one is found then determining the invalid digital signatures from the multiplicative relationship and stopping. Otherwise, incrementing w and returning to the step of computing for additional processing if desired.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: February 15, 2011
    Assignees: The United States of America as represented by the Director, National Security Agency, Sparta, Inc.
    Inventors: Laurie E. Law, Brian J. Matt