ALGORITHM UPDATE METHOD, DEVICE TO BE UPDATED, AND SERVER

摘要

An algorithm update method, device to be updated, and server. The method comprises: detecting, by a device to be updated, an update signal transmitted by a server, wherein the update signal is configured to indicate that a system has an update package, the update package is configured to instruct the device to be updated to disable a target cryptographic algorithm; transmitting, by the device to be updated, a secure link request to the server; establishing, by the device to be updated, a secure link with the server by using a first cryptographic algorithm specified by the server, wherein the first cryptographic algorithm does not comprise the target cryptographic algorithm; receiving, by the device to be updated and via the secure link, the update package transmitted by the server; and updating the device to be updated according to the update package.