Mohammed A. Al-taha and Ra'ad A. Muhajjar, Basrah University, Iraq

Wireless Sensor Networks (WSNs) are critical component in many applications that used for data collection. Since sensors have limited resource, security issues have become a critical challenge in Wireless Sensor Networks. To achieve security of communicated data in the network and to extend the WSNs lifetime; this paper proposes a new scheme called Lightweight Key Management Scheme (LKMS). LKMS used Symmetric Key Cryptography that depends only on a Hash function and XOR operation. Symmetric Key Cryptography is less computation than Asymmetric Key Cryptography. Simulation results show that the proposed scheme provides security, save the energy of sensors with low computation overhead and storage.

Wireless sensor Networks, Key Management, Symmetric Cryptography, hash function, XOR