A new key management protocol to MANET

MANET (Mobile ad-hoc networks) are networks in which nodes are mobile and link connectivity might be changing all the time. The wireless and distributed nature of MANET pose a great challenge to system security. Key management is an important and complex problem to the authentication and system security. The paper proposes a new method to the key management with high efficiency. Which ,making use of the ideas of self-organization and local driven by intercross authentication of CAs and threshold encryption. It's proved that the new method can reduce the communications delay and time delay in the key management process compared to other methods. So, it is a contribution to the field of key management in MANET.