Patents by Inventor Alexander S. Stewart

Alexander S. Stewart 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).

  • Patent number: 8050407
    Abstract: A method of protecting a media key including obtaining the media key, obtaining an auxiliary key, calculating a split key using the media key and the auxiliary key, encrypting the split key using a wrap key to generate an encrypted split key, assembling the encrypted split key and a communication key to obtain a data bundle, and sending the data bundle to a token, where the media key is extracted from the data bundle on the token to protect data on a storage device.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: November 1, 2011
    Assignee: Oracle America, Inc.
    Inventors: James P. Hughes, Alexander S. Stewart, Dwayne A. Edling
  • Publication number: 20110176675
    Abstract: A method of protecting a media key including obtaining the media key, obtaining an auxiliary key, calculating a split key using the media key and the auxiliary key, encrypting the split key using a wrap key to generate an encrypted split key, assembling the encrypted split key and a communication key to obtain a data bundle, and sending the data bundle to a token, where the media key is extracted from the data bundle on the token to protect data on a storage device.
    Type: Application
    Filed: September 7, 2006
    Publication date: July 21, 2011
    Applicant: Sun Microsystems, Inc.
    Inventors: James P. Hughes, Alexander S. Stewart, Dwayne A. Edling
  • Patent number: 7894607
    Abstract: A system, method and media drive for selectively encrypting a data packet. The system includes an encryption key for use in encrypting the data packet, a verification data element derived from the encryption key, an encryption engine for selectively encrypting the data packet using the encryption key, and a verification engine in electronic communication with the encryption engine. The verification engine is configured to receive the encryption key and the verification data element, determine when the verification data element corresponds to the encryption key as received by the verification engine, and prohibit encryption of the data packet by the encryption engine when the verification data element does not correspond to the encryption key as received by the verification engine.
    Type: Grant
    Filed: March 10, 2006
    Date of Patent: February 22, 2011
    Assignee: Storage Technology Corporation
    Inventor: Alexander S. Stewart