A Secure and Power-Aware Protocol for Wireless Ad Hoc Networks
International Journal of Advanced Trends in Computer Science and Engineering · 2019
Wireless Ad hoc networks are more prone to attacks then the wired network.Cryptographic keys provide valuable ways to intact the security of such networks.Public key cryptography is one of the most applicable ways to manage the security of wireless networks.The mobile wireless ad hoc networks that operate on resource-limited devices require computationally efficient security system.The elliptic curve cryptography (ECC) is public key cryptography based on scalar multiplication and has a small length of keys.Therefore, the ECC has comparatively lowered computational and communication cost as compare to Robin's scheme RSA.In this paper, we propose a security scheme (ECCDGKM) based on ECC accompanied by a trust-oriented weight clustering algorithm (TWCA).The TWCA forms clusters on the bases of computational power, the number of neighbors, the proximity with the neighbors and their trust value.The cluster size is proportional to the weight of cluster head (CH) i.e. the CH with higher weight will manage a larger cluster.The key management workload is proportionally distributed among the CH's according to their weight.The CH's are selected in such a manner that each CH is a neighbor of one or two CHs.This will eliminate the need for gateway nodes.The process is repeated after a threshold time and thus, reduces the frequent drowning of CH.The ECC enabled digital signature scheme is used to generate and share the local group key for intra-cluster communication and global group key for inter-cluster communication.We compare our scheme with two recent and similar schemes.The ECCDGKM shows better results than these schemes in terms of the number of cluster forms, keys generated, operations performed and messages exchanged.