Patents by Inventor Steven H. Lay

Steven H. Lay 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 for loading and utilizing a key in a secure transmission device
    Patent number: 5412721
    Abstract: An encryption code and at least one key are provided to a secure transmission device, via an external keying device, and stored in a volatile memory. A user code, entered via a keypad by a user, is received by the secure transmission device. An encrypted representation of the at least one key, based on the encryption code and the at least one key, is generated and stored in a non-volatile memory. Also, an encrypted representation of the encryption code and the user code, based on the user code, are generated and stored in the non-volatile memory. Upon power down of the secure transmission device, the at least one key and encryption code stored in the volatile memory are erased.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: May 2, 1995
    Assignee: Motorola, Inc.
    Inventors: Kent D. Rager, Steven H. Lay
  • Method for loading encryption keys into secure transmission devices
    Patent number: 5363447
    Abstract: An encryption code and at least one key are provided to a secure transmission device, via an external keying device, and stored in a first volatile memory. An encrypted representation of the at least one key, based on the encryption code and the at least one key, is generated and stored in a non-volatile memory. Upon power down of the secure transmission device, the encryption code is stored in a second volatile memory and the at least one key and encryption code stored in the first volatile memory are erased.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: November 8, 1994
    Assignee: Motorola, Inc.
    Inventors: Kent D. Rager, Steven H. Lay