In view of implementation demands of the intelligent consumption information acquisition system

radio frequency identification(RFID)technology is applied to ensure acquisition terminals management. To solve the numerous privacy and security vulnerabilities in the process of terminals authentication and information transmission in RFID systems

an access control protocol for intelligent electricity consumption information acquisition terminals is proposed. The novel protocol is divided into two stages

the terminal identity authentication and the terminal information access control. The hash function

the private key and the random key are employed to ensure the privacy and security of messages. In order to satisfy the demands of actual information collection and terminal maintenance

the reader's operating authority over the acquisition terminal is taken into consideration

which ensures the security of the terminal sensitive information. The non-formalized method analysis indicates the new protocol can effectively resist as many as 6 kinds of attacks including the blocking attack

spoofing attack and recognizer illegal access attack

and it ensures safe access to acquisition terminals as well as legal operation of terminals information

which will improve safety protection level of the electricity consumption information acquisition system.