Patent ID: 9509778
Filing Date: 2016-11-29
CPC Classification: H04L,H04W

Claim Text:
1. A Session Initiation Protocol (SIP)-based method for secure communication between Machine Type Communication (MTC) devices, comprising: establishing a secure connection between an SIP server and a source MTC device and a secure connection between the SIP server and a target MTC device respectively through a Generic Bootstrapping Architecture (GBA) manner or a GBA-push manner; generating, by the SIP server, an application layer session key; sending, by the SIP server, the application layer session key to the source MTC device through the secure connection between the SIP server and the source MTC device; sending, by the SIP server, the application layer session key to the target MTC through the secure connection between the SIP server and the target MTC device; encrypting, by the source MTC device, session acknowledgement information through the application layer session key; sending, by the source MTC device, the session acknowledgement information to the target MTC device directly to establish a secure session connection between the source MTC device and the target MTC device; and starting, by the source MTC device and the target MTC device, data interaction based on the secure session connection to perform a session.