BIDIRECTIONAL ENTITY AUTHENTICATION METHOD WITH INTRODUCTION OF ONLINE THIRD PARTY

摘要

A method for bi-directional entity authentication introducing an online third party, the method comprising: 1) sending a message 1 to an entity A; 2) entity A sends message 2 to trusted third party TP after receiving message 1; 3) the trusted third party TP checks the legitimacy of entity A and entity B after receiving message 2; 4) the trusted third party TP checks the legitimacy of entity A and entity B and then feeds back message 3 to entity A; 5) entity A sends message 4 to entity B after receiving message 3; 6) The entity B completes the authentication for the entity A by proceeding with the verification after receiving the message 4; 7) entity B sends message 5 to entity A; And 8) the entity A proceeds with the verification after receiving the message 5 to complete the authentication for the entity B. The above scheme simplifies the execution condition of a protocol by disclosing an online search and authentication mechanism of a public key, and realizes bi-directional legitimacy authentication between a user and a network through a two-way authentication method according to the present invention in an actual application.