Leveraging flexible distributed tokens in an access control system

US10868815B2 · kind B2 · utility

Assignee

• Schlage Lock Company LLC · US

Inventors

• Devin A. Love · Westfield, US
• John Goodrich · Carmel, US
• Robert Martens · Carmel, US

Key dates

• Filing date: Dec 10, 2019
• Grant date: Dec 15, 2020
• Expiry date: Dec 10, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G07C2209/08
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A method according to one embodiment includes determining whether a guest associated with a guest device is authorized to control an access control device based on an access control list, generating a caveated cryptographic bearer token in response to determining the guest is authorized to control the access control device, the caveated cryptographic bearer token including a time-based caveat defining a time limit for control of the access control device, transmitting the caveated cryptographic bearer token to the guest device in response to generating the caveated cryptographic bearer token, transmitting, in response to receiving the caveated cryptographic bearer token, a request including the caveated cryptographic bearer token to control the access control device to the access control device, and authenticating the request based on the received caveated cryptographic bearer token, a base cryptographic bearer token stored on the access control device, and a real-time clock of the access control device.