Patents by Inventor Atsushi Inque

Atsushi Inque 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).

  • Packet authentication and packet encryption/decryption scheme for security gateway
    Patent number: 6185680
    Abstract: A packet authentication and packet encryption/decryption scheme for a security gateway suitable for a hierarchically organized network system and a mobile computing environment. For the packet authentication, in addition to the end-to-end authentication at the destination side packet processing device, the link-by-link authentication at each intermediate packet processing device in the packet transfer route is used. For the packet encryption/decryption, each packet processing device determines whether or not to encrypt/decrypt the packet according to: an information on the computers which are directly managed by this packet processing device; or the encryption information and the signature information provided in the packet; or the encryption information, the signature information, and the encryption/decryption level information provided in the packer.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: February 6, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Atsushi Shimbo, Atsushi Inque, Masahiro Ishiyama, Toshio Okamoto