Patents by Inventor Werner Paulini

Werner Paulini 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).

  • Process for securing and for checking the integrity of the secured programs
    Patent number: 5224160
    Abstract: For securing programs contained in a system storage and for checking their integrity, the programs are in each case coded by a symmetric cryptographic algorithm with the application of a readback secured, secret key, and a check number for each program is simultaneously formed and stored in the storage of the system. For checking the integrity, the programs are then coded again in the same manner and the check number thus obtained in each case is compared with the check number stored at the first coding. It is possible to derive from the result of comparison a criteria for activation or locking the following programs.
    Type: Grant
    Filed: March 20, 1992
    Date of Patent: June 29, 1993
    Assignee: Siemens Nixdorf Informationssysteme AG
    Inventors: Werner Paulini, Dietmar Wessel