TECHNIQUES FOR SECURING NETWORKED ACCESS SYSTEMS
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United States of America Patent
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Issued Date -
Aug 6, 2015
app pub date -
Feb 6, 2014
filing date -
Feb 6, 2014
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Abstract
A system for controlling access to a facility such as a parking structure includes an access device that operates a physical barrier that controls access and a controller that communicates with the access device via a communication network to control the operation of the access device. Messages exchanged between the controller and the access device are secured by encrypting the messages using a first private key and by encrypting a hash value of the encrypted message with a second private key.
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