| 摘要 |
The present invention provides an entity identification method, apparatus and system, and relates to: an entity A transmits an identification request message to an entity B, the identification request message includes the result SN1 of an XOR operation of a Pre-Shared Key (PSK) and the data from processing data N1 according to a first agreed rule, wherein data N1 is generated by entity A, and the PSK is a key shared by A and B; entity B receives the identification request message, performs an XOR operation on SN1 and PSK, performs a process according to a second agreed rule, then performs a process according to a third agreed rule, and then performs an XOR operation again with the PSK processed according to the third agreed rule and then processed according to a fourth rule to obtain SON1, and transmits SON1 through an identification response message to entity A; entity A receives the identification response message, performs an XOR operation on SON1 and the PSK processed according to the third agreed rule and then processed according to the fourth agreed rule, compares the XOR operation result with the result by processing N1 according to the third rule to identify whether entity B is legal. The present invention can effectively save the calculation cost of the identification process. |
