The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 15, 2022
Filed:
Jul. 01, 2019
Soracom, Inc., Setagaya-ku, JP;
Georges Olivier Comarmond, Beau Bassin, MU;
SORACOM, INC., Tokyo, JP;
Abstract
Updating a subscriber identity module, SIM, on a host device by deriving a pre-shared key by requesting a SIM identifier via communication module of the host device; receiving SIM identifier and deriving an agent identifier from SIM identifier; transmitting agent and SIM identifiers to SIM update server; receiving a random value from SIM update server and supplying it to the SIM to initiate SIM authentication procedure. In reply, receiving an authentication response from the SIM; and deriving pre-shared key from authentication response; transmitting an update request message to SIM update server, wherein the update request message comprises the agent identifier and is encrypted before transmission using the pre-shared key; receiving an update response message from the SIM update server which has update data and is encrypted using pre-shared key; and following decryption of update response message using derived pre-shared key, transmitting update data to communication module.