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US 10,706,649 B2Granted
Dual card programming for access control system
AssigneeCarrier Corporation
InventorsAdam Kuenzi, Troy Klopfenstein
Life of this patent
Estimating the term…
Abstract
A method of programming an access control system including presenting an access card and a configuration card to a device; determining a validity of the access card at the device; process the configuration card at the device; decrypting a payload on the configuration card based on information from the access card; using the payload form the configuration card to switch the device to a high security mode of operation.
Claims22
A method of programming an access control system, the method comprising:
- presenting an access card and a configuration card to a radio-frequency identification (RFID) field of an access control device, the configuration card encrypted with a diversified key based upon information from the access card such that when encrypted data stored within the access card expires, the encrypted diversified key within the configuration card expires and the configuration card is unusable for configuring the access control device, the configuration card usable only on a single access control that the access card is authorized to open;
- determining a validity of the access card at the access control device;
- processing the configuration card at the access control device in response to the validity of the access card;
- decrypting a payload on the configuration card based on information from the access card;
- and
- using the payload from the configuration card to configure the access control device to a high security mode of operation such that the access control device thereafter only accepts high-security access cards in the high security mode of operation.
3 more elements
A method of programming an access control system, the method comprising:
- encoding a first card as an access card and a second card as a configuration card;
- presenting the access card and the configuration card to a radio-frequency identification (RFID) field of an access control device, the configuration card encrypted with a diversified key based upon information from the access card such that when encrypted data stored within the access card expires, the encrypted diversified key within the configuration card expires and the configuration card is unusable for configuring the access control device, the configuration card usable only on a single access control that the access card is authorized to open;
- determining a validity of the access card at the access control device;
- processing the configuration card at the access control device in response to the validity of the access card;
- decrypting a payload on the configuration card based on information from the access card, wherein information from the access card is used to create a diversified encryption key by an encryption process that incorporates multiple information inputs and produces an encryption key that is related to all of the multiple information inputs which is then used to encrypt contents of the configuration card;
- and
- using the payload from the configuration card to configure the access control device to a high security mode of operation and change an encryption key in the single access control such that the single access control only accepts high-security access cards in the high security mode of operation.
4 more elements
Dependencies are inferred from the claim text.