RFID ownership transfer method based on partially trusted centre
An electronic label and ownership technology, which is applied in the security technology field related to RFID label authentication, can solve the problems of difficulty in implementation, dependence, and inability to track identification labels, and achieves the effect of strong compatibility, resistance to attacks, and wide application range.
Inactive Publication Date: 2012-10-31
BEIJING JIAOTONG UNIV
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According to the secret information of the tag, the trusted center updates the secret information in the target tag through the reader-writer held by the new owner, and sends the corresponding secret information to the reader-writer held by the new owner through a secure channel, so that the new owner can identify the target tag, and the original owner of the tag will not be able to track and identify the tag
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[0028] In order to make the purpose, technical scheme and advantages of the present invention clearer, the following will be combined with the attached image 3 The present invention is further described in detail.
[0029] Suppose there are two readers A and B in the RFID system. TC is the trusted center of the third party, and T is the current target electronic label. En PK (M) To encrypt the message M with the public key PK, Dec SK (M) To decrypt the ciphertext M with the private key SK, Sig SK (M) To sign the message M with the private key SK, the generated signature includes the message M and the signature value of M, Ver PK (M) is to verify the signature M with the public key PK. PK A , PK B and PK TC are the public keys of Reader A, Reader B and TC respectively, SK A 、SK B and SK TC are the private keys of Reader A, Reader B, and TC, respectively. ID is the identification number of the electronic tag T, which contains some information related to the tag. H ...
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The invention relates to a radio frequency identification technology, and discloses a RFID ownership transfer method based on a partially trusted centre, comprising the following steps: 1) a initial state step that the RFID respectively shares different secret keys with a reader-writer and the partially trusted centre; 2) a reader-writer secret key transmission step that an original owner reader-writer transmits the secret key to a new owner reader-writer; 3) a step of requesting a trusted centre, wherein the new owner reader-writer transmits a secret key updating request to the trusted centre; 4) a trusted centre responding step that the trusted centre transmits a permit to the new owner reader-writer; 5) a step of transmitting the secret key updating request to the RFID, wherein the newowner reader-writer transmits the updating request to the RFID; 6) a step of responding to the updating by the RFID, wherein the RFID updates the secret key and transmits an authentication code; and 7) a step of generating a new secret key by the new owner reader-writer, wherein the new owner reader-writer updates the secret key and transmits a piece of acknowledgment message. Compared with the prior RFID ownership transfer method, the method of the invention greatly enhances privacy protection for the new owner of the RFID, and can effectively various prior attacks.
Description
technical field [0001] The invention relates to radio frequency identification technology, in particular to safety technology related to radio frequency identification label authentication. Background technique [0002] Radio Frequency Identification ("RFID") technology, also known as electronic tag technology, is a communication technology that can identify specific targets and read and write related data through radio signals. One of the advantages of this technique is that there is no need to establish physical or any other visible contact between the identification system and the specific target. It is the link between computer systems and the real world, and provides an efficient and cheap way for computers to perceive and recognize the real world. [0003] RFID systems are widely used, and can be used in retail supermarkets, electronic passports, electronic banknotes, personal ID cards, digital library management, and can even be used to build intelligent self-organiz...
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IPC IPC(8): G06K17/00G06K19/073
Inventor 汪维家李勇刘云
Owner BEIJING JIAOTONG UNIV