Methods and devices for security key renewal in a communication system

摘要

A method is provided for security key renewal performed in a key management device of a communication system. The communication system includes two or more communication devices communicating data packets by using a first security key for transmission and reception. The method includes transmitting, to the two or more communication devices, a second security key for transmission and reception of the data packets; transmitting, to the two or more communication devices, an activation message for activating use of the second security key for reception of the data packets; transmitting, to the two or more communication devices, an activation message for activating use of the second security key for transmission of the data packets; transmitting, to the two or more communication devices; a deactivation message for deactivating use of the first security key for transmission of the data packets; and transmitting, to the two or more communication devices, a deactivation message for deactivating use of the first security key for reception of the data packets.

主权项

1. A method for security key renewal performed in a key management device of a communication system, the communication system comprising two or more communication devices communicating data packets by using a first security key for transmission and reception, the method comprising:
transmitting, to the two or more communication devices, a second security key for transmission and reception of the data packets; after transmitting, to the two or more communication devices, the second security key for transmission and reception of the data packets, transmitting, to the two or more communication devices, an activation message for activating use of the second security key for reception of the data packets; after transmitting, to the two or more communication devices, the activation message for activating use of the second security key for reception of the data packets, transmitting, to the two or more communication devices, an activation message for activating use of the second security key for transmission of the data packets; transmitting, to the two or more communication devices, a deactivation message for deactivating use of the first security key for transmission of the data packets; and transmitting, to the two or more communication devices, a deactivation message for deactivating use of the first security key for reception of the data packets.