Patents by Inventor Morten Tranberg Hansen

Morten Tranberg Hansen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Key-management for advanced metering infrastructure
    Patent number: 11616646
    Abstract: A method for replacing an existing key derivation key in a utility meter arranged in a meter communication infrastructure in a secure way. The method provide a secure mechanism for exchange of symmetric keys without the need for transferring keys across the meter communication infrastructure. From the head-end system to the utility meter is transmitted a command data message comprising a request for replacing the existing key derivation key with the new key derivation key, the key-generation information and a activation key or an authentication code calculated based on the activation key. The utility meter receiving the command data message is arranged to derive the new key derivation key based on a copy of a disaster recovery key stored in the utility meter and on the key-generation information comprised in the received command data message. Further, the utility meter is arranged for deriving a activation key from the new key derivation key. The activation key is used for verifying the command data message.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: March 28, 2023
    Assignee: Kamstrup A/S
    Inventors: Morten Tranberg Hansen, Gerben Kuijpers, Karen Elisabeth Egede Nielsen
  • KEY-MANAGEMENT FOR ADVANCED METERING INFRASTRUCTURE
    Publication number: 20220247560
    Abstract: A method for replacing an existing key derivation key in a utility meter arranged in a meter communication infrastructure in a secure way. The method provide a secure mechanism for exchange of symmetric keys without the need for transferring keys across the meter communication infrastructure. From the head-end system to the utility meter is transmitted a command data message comprising a request for replacing the existing key derivation key with the new key derivation key, the key-generation information and a activation key or an authentication code calculated based on the activation key. The utility meter receiving the command data message is arranged to derive the new key derivation key based on a copy of a disaster recovery key stored in the utility meter and on the key-generation information comprised in the received command data message. Further, the utility meter is arranged for deriving a activation key from the new key derivation key. The activation key is used for verifying the command data message.
    Type: Application
    Filed: May 14, 2021
    Publication date: August 4, 2022
    Inventors: Morten Tranberg Hansen, Gerben Kuijpers, Karen Elisabeth Egede Nielsen