RFID Tag Ownership Dynamic Transfer Protocol Based On Cloud Storage Technology

Radio frequency identification(RFID)technology is a kind of wireless communication technology that can identify the target and read the data without physical contact.RFID tags have many advantages such as small size,low cost,wear-resistant and reusable,which makes them widely used in the supply chain.However,the traditional RFID technology has more and more problems in the application process.Therefore,the RFID systems based on cloud have attracted much attention.Users can rent cloud databases based on demand,thus reducing the cost of deployment and maintenance.Cloud databases support the query and processing of large amounts of data,and the readers can be used for mobile communication at any time and any place.However,cloud providers are untrustworthy,and data stored in cloud databases need to be encrypted to prevent privacy leakage.In addition,the RFID systems based on cloud communicate in wireless channel,which is more vulnerable to eavesdropping,tampering,counterfeiting and tracking attacks.There is a risk of leakage of data privacy.At the same time,the ownership of goods with tags are constantly changing in the supply chain.It is particularly important to ensure security and privacy in the process of ownership transfer.Tags are the communication entity with the weakest computation and storage in the system,reducing the hardware consumption of tags is also one of the most important goals.Based on the description above,this paper studies the RFID ownership transfer protocols based on cloud and achieves the following results:Firstly,the RFID tag ownership dynamic transfer protocol based on cloud is designed.The protocol can not only realize the mutual authentication between readers and tags,but also make the ownership of tags completely transferred.It guarantees the forward and backward privacy security in the process of transfer,resists common attacks such as stealing,tampering counterfeiting,tracking and desynchronization,and meets the security requirements of RFID system.In addition,the protocol chooses lightweight hash function,and the tag only performs hash operations and simple bit operations,which reduces the computation,storage and hardware consumption of the tag.At the same time,the security of protocol is proved based on the formal analysis of BAN logic.Secondly,the weighted multi-owner tag ownership dynamic transfer protocol based on cloud is designed.The protocol is based on the secret sharing threshold scheme of Lagrange interpolation polynomial,which makes the tag ownership transfer completely and ensures the forward and backward privacy security in the transfer process,resists common attacks such as stealing,tampering counterfeiting,tracking and desynchronization,and meets the security requirements of RFID system.In the process of transfer,the tag does not need to restore the communication key to authenticate the new tag owner group.It only needs to authenticate the new tag owner in the group,and the trusted third party is used to update the tag owner's sub-key,so the tag does not need to redistribute the key,which greatly reduces the computation and communication of the tag,and improves the efficiency of the RFID system.Formal analysis based on BAN logic proves the protocol security.Finally,the hardware logic structure of the lightweight hash function LHash-128/128/16/32 used in the protocol is analyzed.The behavioral level simulation and design synthesis are carried out.The synthesis results show the hardware resources of LHash-128/128/16/32,and the results show that it meets the low cost requirement of tags.