Survey on certificateless key management schemes in mobile ad hoc networks

In order to ensure the security of mobile ad hoc networks (MANETs), the research on certificateless key management scheme is attracting more and more attention. The certificateless key management scheme can well resist the key escrow problem and it is very suitable for MANET, which is source-constrained and has no public key infrastructure. In this paper, we give an overview of some recent certificateless key management schemes and analyse their advantages and disadvantages. Then we make a comparison of their main methods, key distribution, private key generation and their calculation cost. Finally we put forward a suggestion to solve the problems existing in the certificateless key management scheme.