Patents by Inventor Thomas Mark Angus Lomas

Thomas Mark Angus Lomas 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 and apparatus for strengthening passwords for protection of computer systems
    Patent number: 6079021
    Abstract: A computer implemented method provides access to processes and data using strengthened password. During an initialization phase, an access code is stored in a memory of a computer system. The access code is an application of a one-way hash function to a concatenation of a password and a password supplement. The size of the password supplement is a fixed number of bits. During operation of the system, a user enters a password, and the one-way hash function is applied to concatenations of the password and possible values having the size of the password supplement to yield trial access codes. Access is granted when one of the trial access codes is identical to the stored access code.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: June 20, 2000
    Assignee: Digital Equipment Corporation
    Inventors: Martin Abadi, Roger Michael Needham, Thomas Mark Angus Lomas