A co-commitment based secure data collection scheme for tiered wireless sensor networks

Tiered wireless sensor networks (WSNs) have many advantages over traditional WSNs. However, they are vulnerable to security attacks, especially the attacks to the storage nodes that buffer and process the data readings from sensors. In this paper, we propose a secure data collection protocol SDC to support time-based queries in tiered WSNs. With small overhead introduced to data communication, SDC protects both data confidentiality and data integrity. In particular it employs data co-commitment scheme such that it can detect the seriousness of data losing and estimate the value of lost data in the network.