Ultra-lightweight RFID bidirectional authentication method based on label ID

Abstract

The invention provides an ultra-lightweight RFID bidirectional authentication method based on a label ID. A bit operation method and a cyclic check code method are used for encrypting transmission information, so that the operation quantity of a label and a reader-writer is reduced, a communication protocol can reach an ultra-lightweight level, and the authentication time is shortened; the reader-writer generates a random number, so the cost of the label can be reduced; unique identifier information of the shared label of the label and the reader-writer is fully used to reduce the introduction and storage of the information; the reader-writer calculates a new shared key and transmits the new shared key to the label via simple encryption, and the label only needs to carry out simple xor operation to obtain the new shared key, so the operation quantity of the label is reduced; and the information transmitted between the label and the reader-writer is transmitted after being encrypted, so that an attacker is unlikely to obtain effective information, and thus the security performance can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of radio frequency identification, and more specifically, relates to an ultra-lightweight RFID bidirectional authentication method based on a tag ID. Background technique [0002] RFID (Radio Frequency Identification, Radio Frequency Identification) is a non-contact technology that automatically identifies people or objects without physical contact or any other visible contact. Today, RFID systems are widely used in supply chain management occasions, digital library management occasions, anti-counterfeiting electronic passport systems, and even building intelligent ad hoc network environments and so on. [0003] The RFID system includes three parts: the back-end database, the reader and the label. The communication channel between the back-end database and the reader is generally considered to be safe and reliable; the channel between the reader and the tag is exposed to the air, and it is very easy to be m...

AI Technical Summary

Problems solved by technology

However, it was later pointed out that the output of the protocol has a large bias, which leads to weak privacy of tags and vulnerability to tracking attacks.

Since then, researchers introduced the MIXBITS function and proposed the Gossamer protocol, but some scholars found that it has security flaws such as denial of service attacks

[0007] In addition, the existing authentication methods still have the following deficiencies: (1) During the authentication process, the tag needs to generate a random number, so a random number generator must be installed on the tag, and the existence of the random number generator increases the number of tag gate circuits , leading to an increase in implementation costs; (2) The information transmitted between the tag and the reader is transmitted in plain text, and the attacker can easily obtain some privacy, which has serious security flaws; (3) Use HASH function and DES algorithm If the algorithm with a large amount of calculation is used for encryption operation, the entire authentication process takes a long time, so that the cost of the label cannot meet the requirements of the ultra-lightweight authentication protocol; (4) The amount involved in the authentication process is large, which will inevitably lead to The increase in the amount of calculation and the need to store more information on the tag will inevitably increase the storage space on the tag side, resulting in an increase in the overall cost of the tag

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