Patents by Inventor Yves M. J. Dherbecourt

Yves M. J. Dherbecourt 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, apparatus and device for enciphering messages transmitted between interconnected networks
    Patent number: 5583940
    Abstract: A method of enciphering messages transmitted between at least two networks (2, 17) interconnected via at least one highway (8), the interconnected networks (2, 17) using the Internet protocol (IP, as network layer protocol and the TCP or UDP protocol, as transport layer protocol, the highway (8) using a specified network layer protocol, each message comprising a plurality of headers (73-76), including an IP header (75) and a TCP or UDP header (76, 80, 81), and data (77). The specified network layer protocol of the highway is the Internet protocol (IP). For each of the messages, at least a part (82, 83, 84, 85) of the TCP or UDP header (76, 80, 81) is enciphered at the same time as the data (77) and the IP header (75) is plain (non enciphered) to enable the transmission of the message by the highway according to the Internet protocol (IP).
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: December 10, 1996
    Assignee: Electricite de France - Service National
    Inventors: Andrei Vidrascu, Yves M. J. Dherbecourt, Jean-Marc Herodin