Methods and apparatus for use in transferring an assignment of a secure chip subscription managers

摘要

Techniques for use in transferring an assignment of a secure chip of a wireless device from a current subscription manager (SM) of a current mobile network operator (MNO) to a new SM of a new MNO are described. In one illustrative example, the current SM receives a request for transferring the assignment and produces transfer permission data in response. The transfer permission data includes an identifier of the secure chip, an identifier of the current SM, and a digital signature of the current SM. The current SM then sends to the secure chip a transfer permission message which includes the transfer permission data. The transfer permission data indicates a permission for the secure chip to transfer the assignment from the current SM to the new SM. Additional techniques are performed by the secure chip, and the new SM, as described.

主权项

1. A method at a secure chip of a wireless device for facilitating a transfer of assignment of the secure chip from a current subscription manager of a current mobile network operator to a new subscription manager of a new mobile network operator, the method comprising:
receiving, from the current subscription manager, a transfer permission message which includes transfer permission data, the transfer permission data including an identifier of the current subscription manager and a digital signature of the current subscription manager; verifying the digital signature of the current subscription manager; and sending, to the new subscription manager, a transfer request message which includes the transfer permission data, an identifier of the new subscription manager, and a digital signature of the secure chip.