A METHOD AND EQUIPMENT FOR GENERATING CARE OF ADDRESS AND A METHOD AND SYSTEM FOR IMPROVING ROUTE OPTIMIZATION SECURITY

摘要

A method and equipment for generating care of address and a method and system for improving route optimization security are provided, the present invention belongs to the mobile communication field. The method that generates the care of address includes steps: the interface ID is generated by the one-way function using the HoA as the input; CoA is generated by combining the interface ID and prefix of an external network that is visited by the MN. The method that improves the route optimization security includes steps: CoA is generated by using the above method; MN and CN performs RRP; MN signs BU information using the private key to obtain the binding authorization data; MN transmits the BU information including HoA, CoA and he binding authorization data to CN, CN validates it using the public key, if it passes, the communication between the MN and the CN under the mode of route optimization. The equipment includes a identifier generation module and a care of address generation module. The system includes MN and CN. The CoA generated by the present invention limits the attack because the mobile mechanism is misapplied, and the communication security is improved under the mode of the mobile IPv6 route optimization.