Patent ID: 11930360
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 0:
1. A method comprising:
receiving, by a subscription manager-data preparation (SM-DP+) server from a local profile assistant (LPA), first embedded universal integrated circuit card (eUICC) information comprising a verification certificate issuer (CI) public key identifier list of an eUICC;
sending, by the SM-DP+ server to the LPA, first information comprising a first CI public key identifier, wherein the first CI public key identifier is stored on the SM-DP+ server, does not match any CI public key identifier in the verification CI public key identifier list, and is for mutual authentication between the SM-DP+ server and the eUICC;
sending, by the LPA to the eUICC, the first CI public key identifier;
receiving, by an operating system patch server (OPS) from the eUICC, second information comprising the first CI public key identifier; and
sending, by the OPS to the eUICC, a patch package comprising a first CI public key corresponding to the first CI public key identifier to enable the eUICC to update a set of CI public keys of the eUICC.