A Low Computation Cost Key Management Solution to MANET

After concisely analyzing the typical group key agreement protocols of centralized key distribution （CKD）, Diffie-Hellman （DH） and group Diffie-Hellman （GDH）, tree-based group Diffie-Hellman （TGDH）, the paper gives out a new key management method by threshold cryptography and tree-based structure, which is proved to gain advantages in computation cost greatly and improves the MANET key management performance accordingly.     

An Efficient Key Agreement Framework to MANET

Protocols for key management are compared and evaluated from the point of view on mobile ad hoe networks （MANET）. The issues of fault-tolerance and efficiency of key distribution protocols for group communications in MANET are addressed. Most key distribution protocols existing today are primarily designed for wlre-line networks. These protocols either fail to work as intended or cannot work at all when they are applied to the demanding environment of MANET. Parameters and performance of different protocols are analyzed, and then a fiat is given out, on which new protocols or existing ones are designed and modified, so that they can be robust, scalable and efficient in MANET.