Secure communication system with remote key setting

Details Secure communication system with remote key setting Secure communication system with remote key setting

1969-02-14

1980-01-08

Birmiel, Howard A.

Telegraphy

Systems

Printing

178 22, H04K 100, H04L 900

Patent

active

041829336

ABSTRACT:
An apparatus for maintaining secure communication between subscribers. A trally located key distribution center, which includes a data processor, is utilized as a source of remotely selected working variables which are utilized to enable secure communication between a plurality of selected subscribers. Each subscriber in the system has a unique variable which identifies him to the data processor, and enables a secure communication with the data processor, which will then provide him with the working variable of the subscriber that he wishes to call. The key distribution center also reiteratively replaces the working variable of the caller, and the called subscriber if desired, each time contact is made with the key distribution center.

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