The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 1990
Filed:
Apr. 14, 1989
B J Herbison, Clinton, MA (US);
Carter Lyman, Merrimack, NH (US);
Paul Karger, Acton, MA (US);
Bruce Mann, Mason, NH (US);
Steve Lipner, Wellesley, MA (US);
Arnold Miller, Austin, TX (US);
Digital Equipment Corporation, Maynard, MA (US);
Abstract
Apparatus and methods, readily adapted to interface with a standard data transmission network having an unsecure transmission channel, e.g., 'Ethernet,' for the provision of secure transmission of data over the network channel in a manner which is essentially transparent to the standard network devices and users, thereof, are provided. Various encryption keys are generated and utilized within the system to disguise or encrypt information transferrred between network nodes. The encryption keys are made known only to those network devices which are permitted to handle information encrypted with the encryption keys.