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Device that issues authority for automation systems by issuing an encrypted time pass

  • US 7,314,169 B1
  • Filed: 09/29/2004
  • Issued: 01/01/2008
  • Est. Priority Date: 09/29/2004
  • Status: Active Grant
First Claim
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1. An industrial automation security system, comprising:

  • an access ticket relating to an industrial automation system, the access ticket comprises one or more restrictive attributes that restrict access rights to a portion of contents of the industrial automation system, the one or more restrictive attributes correspond to properties of the industrial automation system and properties of a requesting entity;

    a component that receives the access ticket and grants access to the industrial automation system and the contents therein according to the one or more restrictive attributes; and

    a sensor that senses whether the industrial automation system is communicatively connected to an access authority that issues the access ticket.

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