KEY NEGOTIATION METHOD, APPARATUS AND SYSTEM

摘要

The present application provides a key negotiation method, an apparatus and a system, which can be applied to the field of communications, such as short-range communication (containing a cockpit domain). When a sender device and a receiver device perform key negotiation, the sender device notifies, by means of first information, all key negotiation algorithms supported by the sender device to the receiver device, and the receiver device selects, from the received key negotiation algorithms supported by the sender device, a key negotiation algorithm supported by the receiver device itself. In this way, the key negotiation algorithm selected by the receiver device is a key negotiation algorithm supported by both the sender device and the receiver device, avoiding a key negotiation algorithm negotiation failure caused by the sender device not supporting the key negotiation algorithm selected by the receiver device, and improving the efficiency of key negotiation. Furthermore, the key negotiation method provided in the present application supports a national secret algorithm.