Patents by Inventor Neil A. McDonald

Neil A. McDonald 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).

  • Authenticator
    Patent number: 4965827
    Abstract: An authenticator for digital data is derived by generating a numerical array, using a secret key to controllably shift the relative positions of the elements of the array, and applying the scrambled array to a message to create an authenticator for that message. The method allows a high level of security and minimizes the risk of a system, such as an intelligent portable token and reader system, being compromised.
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: October 23, 1990
    Assignee: The General Electric Company, p.l.c.
    Inventor: Neil A. McDonald