A method for wireless generation of rfid system key

Abstract

The invention discloses a wireless key generation method for an RFID system. The RFID system includes a tag and a reader, specifically: the reader determines the key generation type; the key generation type includes a single tag key generation , batch key generation and group key generation; according to different key generation types, a shared key is generated between the reader and the tag. The security analysis shows that this method can not only resist active attack and passive attack, but also can make up for the deficiencies of existing technologies, and can completely resist brute force attack.

Description

technical field [0001] The invention relates to the technical field of radio frequency identification, in particular to a method for wirelessly generating an RFID system key. Background technique [0002] With the continuous advancement of science and technology, radio frequency identification technology is more and more widely used in daily life. In the existing RFID system, it is generally composed of three parts: the reader, the label, and the back-end database. The reader and the back-end database are wired data transmission through the network cable, so the connection between the two Communication is generally considered to be safe and reliable, so the two can be regarded as a whole; while the transmission between the reader and the tag is to exchange data information in a wireless way, which has certain security defects, among which the reader The security of the shared key between the writer and the tag will directly affect whether the data transmitted between them i...

AI Technical Summary

Problems solved by technology

In the existing RFID system, it is generally composed of three parts: the reader, the label, and the back-end database. The reader and the back-end database are wired data transmission through the network cable, so the connection between the two Communication is generally considered to be safe and reliable, so the two can be regarded as a whole; while the transmission between the reader and the tag is to exchange data information in a wireless way, which has certain security defects, among which the reader The security of the shared key between the writer and the tag will directly affect whether the data transmitted between the two is safe and reliable, so the security of the shared key is the key object to ensure security during the communication process

[0003] In the existing RFID system, due to the low-cost requirements of the tag, the storage space, computing power, and data exchange methods of the tag side are severely restricted. The computing power of the tag side is particularly limited, and traditional large-scale calculations cannot be performed. Therefore, in the existing RFID system, the shared key between the tag and the reader is mostly set with the initial key value in advance.

Although this reduces the amount of calculation on the tag side to a certain extent, it also has certain security risks. Attackers can use some attack methods to obtain the initial key value, thereby further obtaining other private information. The key has certain security flaws

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