| 摘要 |
<p>A method, an apparatus and a system for entity authentication are provided in the present invention. The method comprises: an entity A sending an authentication request message to an entity B, wherein the authentication request message includes the result SN1 of XOR operation on PSK and the data N1 generated locally by the entity A, and the PSK is a key shared by the entity A and the entity B; the entity B receiving the authentication request message sent by the entity A, performing XOR operation on the SN1 in the authentication request message and the PSK, and performing XOR operation again on the PSK and the XOR operation result so as to obtain SON1 after processing the XOR operation result according to a convention rule, and then sending the SON1 to the entity A through an authentication response message; and the entity A receiving the authentication response message sent by the entity B and performing XOR operation on the SON1 in the authentication response message and the PSK, and comparing the result obtained by the XOR operation and the result obtained by processing the N1 according to a convention rule, and it is authenticated whether the entity B is legal or not according to the comparison result. According to the invention, calculation cost during the authentication process is effectively saved, and operation efficiency in the authentication process is also improved.</p> |
