PUF-based lightweight RFID bidirectional authentication method
A two-way authentication, lightweight technology, applied in the field of RFID, can solve problems such as difficulty in resisting asynchronous attacks, replay attacks, clone attacks, security risks, low efficiency, etc., to enhance confidentiality, ensure synchronization, and increase confusion. degree of effect
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[0030] The method of the present invention will be described in further detail below in conjunction with the above-mentioned drawings.
[0031] Symbol Description:
[0032] Table 1 Symbol description
[0033]
[0034] In order to reduce the power consumption of the tag and increase the complexity of the communication volume, the present invention defines a new bit flip operation FLIP:
[0035] Step 1: Flip X
[0036] A binary string of length L, the initial pointer j=1, and the Hamming weight is w. Right a j ...a j+w The substring where it is located is reversed, and then the pointer j=j+1, the Hamming weight of the new string is recalculated after the reverse, and this process is repeated until j-1+w> End at L.
[0037] For example: long string 01101101 00010110, the initial Hamming weight w=8
[0038] The first time: 1 001001 000010110 w=6
[0039] The second time: 11 10110000 010110 w=8
[0040] The third time: 1101001111010110 w=10
[0041] The fourth time: 1100 11000010 1110 w=8
[004...
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