Patent ID: 8775795
Filing Date: 2014-07-08
Classification: H04L,H04W

Abstract:
1. An authentication method for a Code Division Multiplex Access, CDMA, Evolution to packet Data Optimized, EVDO, network, comprising a Network Access Identifier, NAI, authentication method and a Challenge Handshake Authentication Protocol, CHAP, authentication method, wherein the NAI authentication method comprises: fetching an NAI of a user from a user identity model upon determining that an identifier supporting a Message Digest 5, MD5, authentication method is stored in the user identity model; determining whether the NAI of the user is correct upon fetching the NAI from the user identity model; transmitting the fetched NAI to an authentication server for authentication when the result of determination is yes; and fetching an International Mobile Subscriber Identity, IMSI, of the user from the user identity model when the result of determination is no, deriving an NAI of the user from the IMSI, and transmitting the derived NAI to the authentication server for authentication.