A General Comparison of Symmetric and Asymmetric Cryptosystems for WSNs and an Overview of Location Based Encryption Technique for Improving Security
Swapna B. Sasi · IOSR Journal of Engineering · 2014
a lot of advancements are being carried out in the field of wireless sensor networks in recent years.The wireless sensor networks are employed in a variety of fields such as military, health care, industry etc. Due to the increasing acceptance of this technology leads us to consider more about the security aspects of the WSNs.To ensure the integrity and to protect data from unauthorised accesses some method of cryptographic technologies must be employed.The symmetric and asymmetric encryption techniques can be employed in the WSN architecture to provide security.The asymmetric key encryption techniques may provide a higher level of security but compared to the symmetric key encryption it causes more overheads to the sensor nodes.Another method of location based encryption which can be used along with these technologies provides an extra layer of security by restricting the cipher text to be decrypted only at a specified location.A review of all these systems is described in this paper.