Patent ID: 11937088
Assignee: SORACOM, INC
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A device with a processor configured to communicate with a subscriber identity module, SIM, associated with the device, the processor configured to:
receive a value from a server over a network;
transmit the value to the SIM;
receive a first message from the SIM wherein the first message is generated using the value and comprises a signed response and a cipher key;
derive a pre-shared key using the first message and at least one of the signed response and the cipher key;
receive a second message over the network from the server, wherein the second message is encrypted using the pre-shared key;
decrypt the second message using the derived pre-shared key; and
transmit data included in the decrypted second message to the SIM.