Asymmetric Concealed Data Aggregation Techniques in Wireless Sensor Networks: A Survey

Abstract

The wireless communication nature of remotely deployed sensor nodes make the attacks more easily to be happened in wireless sensor networks (WSNs). But traditional security algorithms are infeasible in WSNs due to the limited computing, communication power, storage, band width and energy of sensor nodes. So energy efficient secure data aggregation schemes are necessary in resource constrained WSNs. Concealed Data Aggregation (CDA) based on privacy homomorphism (PH) gives a critical solution for energy efficient secure data aggregation in WSNs. PH based algorithms allow aggregation to be happened on cipher texts. Thus, it eliminates the power consuming decryption operations at the aggregator node for the data aggregation and further encryption for the secure transmission of aggregated data. It also avoids the aggregator node from the burden of keeping the secret key information and thereby it achieves energy efficiency and reduces the frequency of node compromise attacks in aggregator nodes. Among the CDA techniques, asymmetric PH based CDA techniques are exploring due to their combination with elliptic curve cryptography having reduced key size. We present an overview of asymmetric concealed data aggregation techniques that achieve both end to end data confidentiality and non delayed data aggregation.

Secure End to End Data Aggregation using Public Key Encryption in Wireless Sensor Network

“…ie. E(x+y) =E(x) +E(y).It is more suitable in wireless sensor network due to their less expensive operation than multiplicative PH [12].…”

“…Privacy homomorphic encryption achieves both end to end confidentiality and data aggregation. Additive PH and multiplicative PH are the two variations of privacy homomorphism [12].…”

“…Cluster based data aggregation protocols reduces the latency in the tree-based data aggregation by grouping the nodes in WSNs into clusters [12].This process is called clustering. In cluster based protocols, cluster head performs data aggregation and parent nodes in the path to the base station perform data aggregation in tree based data aggregation protocols [2].…”

“…Data aggregation protocols are divided into tree based data aggregation protocols and cluster based data aggregation protocols based mainly on the topology used for data aggregation [12]. Cluster based data aggregation protocols reduces the latency in the tree-based data aggregation by grouping the nodes in WSNs into clusters [12].This process is called clustering.…”

Performance Evaluation of QoS Parameters for Varied Network Overheads for Convergecast Routing in WSN

“…Lai et al [14] use the greedy graph coloring technique is used to assign time slots to the sender to overcome the frequency interference problem in convergecast routing and find the shortest path to send data to the sink node so that throughput should increased. [16] Defines the security in data aggregation technique, concealed data aggregation in convergecast routing in wsn improves the security with energy efficiency in aggregation.…”