Electronic tag ownership transfer method

Abstract

The invention relates to the technical field of information security, in particular to an electronic tag ownership transfer method. The method comprises the steps: after a label and identity information of an original owner pass verification, enabling the original owner to feed back first authentication information carrying a first shared key, a first random number and the identity information; after the label verifies the first authentication information, generating intermediate information and a transfer key according to the first random number, the second random number and the first shared key, and obtaining the authentication information according to the first random number, the second random number and the transfer key; sending the authentication information and the intermediate information to an original owner, the original owner obtains suspected authentication information, and after the suspected authentication information passes verification, the first random number, transferring the second random number and the transfer key to a new owner; and replacing the first shared key with a second shared key between the tag and the new owner. According to the method, the shared key and the transfer key are separated, and the window problem and the desynchronization problem in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a method for transferring the ownership of an electronic label. Background technique [0002] At present, electronic label technology has been widely used in various fields such as logistics, transportation, anti-counterfeiting, and book management. Compared with traditional barcodes, electronic tags can realize longer-distance non-line-of-sight contact identification. The electronic tag system generally includes a background server, a reader, and an electronic tag. The former two can use complex encryption algorithms due to unrestricted calculations, so the data transmission between them is safe by default, but the connection between the reader and the tag is based on a wireless open channel. Vulnerable to various attacks. In general, the communication between the tag and the reader must be authenticated, and we need to design a secure protocol for it to resist at...

AI Technical Summary

Problems solved by technology

The technical problems in this technical solution are: the random number in the new owner update phase of the second stage is sent in plain text, and the attacker tampering with the random number and sending it to the tag will cause the tag to be updated with a key different from the new owner, thus Causes de-synchronization problems; the first phase and the second phase are independent of each other. If the second phase fails, since the original owner and the tag still have the original key at the same time, it will appear that both the new owner and the original owner can The case of the authentication label, the window problem

Images