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.

Date of Patent:
Apr. 23, 1991

Filed:

Apr. 27, 1990
Applicant:
Inventors:

Erwin W Bathrick, La Habra, CA (US);

James E Zmuda, El Toro, CA (US);

Assignee:

Hughes Aircraft Company, Los Angeles, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04I / ;
U.S. Cl.
CPC ...
380 21 ; 380 23 ;
Abstract

The invention is an improved distributed information system which automatically provides for the transmission of security protocol data units between end-users of a distributed information system. The invention compares the address and security key of a received security protocol data unit to stored end-system addresses and security key information and, in the absence of an existing end-system address and security key, automatically initiates negotiation of a security key between end-systems and then confirms the negotiated security key and initiates a security protocol transmission of the data unit. A method af automatic invoking secure communications between end-systems of a distributed information system is also disclosed.


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