Key management method used for wireless sensor network

• Main Authors: GUO XIANCHEN, ZHANG QIKUN, CUI ZHENFU, ZHENG JUN
• Format: Patent
• Language: Chinese; English
• Published: 24.08.2011
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; WIRELESS COMMUNICATIONS NETWORKS

The invention relates to a key management method used for a wireless sensor network, in particular relates to a key management method adopting the combined key technology, and belongs to the field of wireless sensor network safety technology. The key management method comprises the three steps as follows: system building, key generation and key updating, wherein the step of key generation comprises three processes of system parameter building, key factor and mapping algorithm generation, and shared key building. Compared with the prior art, the key management method has certain degrees of improvements on safety, storage and energy conservation, solves the problem that the sensor mode storage space is limited, ensures that any adjacent nodes can share a key, makes up for a deficiency that the sensor network is not provided with an authentication center, and saves the storage space.