RSA-based Proxy Signature for Media Independent Handover

This paper proposes an Authentication Interworking Protocol(AIP)based on IEEE 802.21 Medi Independent Handover(MIH)in the heterogeneous networks.The proposed AIP with the RSA-based proxy signature reduces handover delay time and communication message overhead when the mobile node moves between the heterogeneous networks.It defines new AIP Type Length Value(AIP TLV)in MIH frame format and uses the MIH Information Server(MIHIS)for issuing signature.The MIHIS can generate a signature on behalf of the AAA server and then the signature can be used by mobile node for a pre-authentication.For low handover delay,the proposed AIP performs pre-authentication processes with MIP protocol before layer 2 handover.Also,this paper analyses the performance of the handover and compares with the non-secure MIH.