Abstract:

Most mobile IP registration protocols use symmetric cipher systems and public key cryptosystems together to achieve mutual authentication between entities. But these protocols have certain safety defects because there are no authentication between mobile nodes and foreign agents.In order to improve the security of mobile IP registration agreement, in this paper a certificateless tripartite key agreement (CL-TKA) is introduced into mobile IP registration.A new mobile IP registration protocol is proposed based on CL-TKA to achieve mutual authentication between mobile nodes,hometown agents and foreign agents.The analysis of this protocol shows that the proposal provides higher security and efficiency.

Key words: mobile IP;registration protocol;tripartite key agreement;certificateless