| 摘要 |
A mutual authentication method with which a base station and a subscriber station can mutually authentication with each other is proposed. In this method, dynamic keys are employed, and SS and BS individually input random numbers to the Diffie-Hellman Public Key Distribution System (DH-PKDS for short) to generate a set of public keys and a set of common secret keys as the strong data connection for authentication (DCA for short) between the two stations. An addition function (ADR) which is more secure than that of an exclusive OR function in key transmission is used as a data carrier. SS and BS authenticate each other by using the identity certification keys. Plaintext is encrypted by a two-dimensional stream cipher method so that ciphertext can be more securely, also efficiently, transmitted. Further, dynamic keys and all other security parameters transmitted through wireless channels are only used once to further improve system security. |
