Patents by Inventor Carter Lyman

Carter Lyman 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).

  • Apparatus and method for secure transmission of data over an unsecure transmission channel
    Patent number: 4924513
    Abstract: Apparatus and methods, readily adapted to interface with a standard data transmission network having an unsecure transmission channel, e.g., "Ethernet," for the provision of secure transmission of data over the network channel in a manner which is essentially transparent to the standard network devices and users, thereof, are provided. Various encryption keys are generated and utilized within the system to disguise or encrypt information transferrred between network nodes. The encryption keys are made known only to those network devices which are permitted to handle information encrypted with the encryption keys.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: May 8, 1990
    Assignee: Digital Equipment Corporation
    Inventors: B. J. Herbison, Carter Lyman, Paul Karger, Bruce Mann, Steve Lipner, Arnold Miller
  • Apparatus and method for secure transmission of data over an unsecure transmission channel
    Patent number: 4881263
    Abstract: Apparatus and methods, readily adapted to interface with a standard data transmission network having an unsecure transmission channel, e.g., "Ethernet," for the provision of secure transmission of data over the network channel in a manner which is essentially transparent to the standard network devices and users thereof, are provided. Various encryption keys are generated and utilized within the system to disguise or encrypt information transferred between network nodes. The encryption keys are made known only to those network devices which are permitted to handle information encrypted with the encryption keys.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: November 14, 1989
    Assignee: Digital Equipment Corporation
    Inventors: B. J. Herbison, Carter Lyman, Paul Karger, Bruce Mann, Steve Lipner, Arnold Miller