Patents by Inventor Jarmo VEIKKOLA

Jarmo VEIKKOLA 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).

  • Protecting cryptographic key data
    Patent number: 11456854
    Abstract: A cryptographic module is switchable between a key-input mode and a data-input mode. In the key-input mode, the cryptographic module receives key data, key length information and first input data, combines an amount of the key data corresponding to the key length information with the first input data to produce combined data, wherein a key-influenced length of the combined data is the shortest length of the combined data that contains every data bit of the combined data whose value depends on the key data. It performs a cryptographic operation on the combined data to generate first output data and does not output any of the first output data until after the cryptographic operation has been applied to all of the key-influenced length of the combined data.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: September 27, 2022
    Assignee: Nordic Semiconductor ASA
    Inventors: Kauko Kutti, Jarmo Veikkola, Marko Winblad
  • PROTECTING CRYPTOGRAPHIC KEY DATA
    Publication number: 20210218545
    Abstract: A cryptographic module is switchable between a key-input mode and a data-input mode. In the key-input mode, the cryptographic module receives key data, key length information and first input data, combines an amount of the key data corresponding to the key length information with the first input data to produce combined data, wherein a key-influenced length of the combined data is the shortest length of the combined data that contains every data bit of the combined data whose value depends on the key data. It performs a cryptographic operation on the combined data to generate first output data and does not output any of the first output data until after the cryptographic operation has been applied to all of the key-influenced length of the combined data.
    Type: Application
    Filed: February 14, 2019
    Publication date: July 15, 2021
    Applicant: Nordic Semiconductor ASA
    Inventors: Kauko KUTTI, Jarmo VEIKKOLA, Marko WINBLAD