Patent ID: 8578164

Claim:
A method of one-way access authentication, characterized in that the method comprises: sending, by a second entity, an authentication request and key distribution packet to a first entity according to system parameters pre-set up by a third entity, and verifying, by the first entity, whether the authentication request and key distribution packet is valid, wherein the system parameters comprise: two q-order cyclic groups (G 1 , +) and (G 2 , ·) a generator P of G 1 , a bilinear map e of G 1 and G 2 which is e: G 1 ×G 2 →G 2 , a randomly selected trusted third party private key S TTP εZ* q , and a corresponding public key Q TTP =S TTP PεG 1 ; generating, by the first entity, an authentication and key response packet and sending by the first entity the authentication and key response packet to the second entity when the authentication request and key distribution packet is valid, and verifying, by the second entity, whether the authentication and key response packet is valid; generating, by the second entity, an authentication and key confirmation packet and sending by the second entity the authentication and key confirmation packet to the first entity when the authentication and key response packet is valid, and verifying, by the first entity, whether the authentication and key confirmation packet is valid; and determining that the authentication is successful and the key serves as an agreed master key when the authentication and key confirmation packet is valid.