Patents by Inventor Robert Lawrence Geiger

Robert Lawrence Geiger 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 and system for hierarchical key access and recovery
    Patent number: 5917911
    Abstract: A key management system includes a hierarchy (10) of independent key arbitration centers (KAC) for providing access to a user's session keys through key management centers (KMC). When a court order is issued for a user's session keys, a message requesting the keys is transferred down through hierarchy until a terminal KAC (16,36) is reached. Each KAC in the hierarchy adds its ID and signs (116) the message, verifying prior signatures (114). The user's ID is encrypted with the terminal KAC's public key. The terminal KAC engages in a blind key access procedure (129) with the KMC (18,38) to receive the user's session key. The key is provided encrypted with the requesting party's or agency's public key. Accordingly, privacy is assured because only the KMC and the requesting agency have access to the actual key value, and only the terminal KAC and requesting agency have access to the user's ID.
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: June 29, 1999
    Assignee: Motorola, Inc.
    Inventors: Ezzat A. Dabbish, Robert Lawrence Geiger, Larry Charles Puhl