Method for asymmetrically authenticating radio frequency electronic tag
An authentication method and electronic tag technology, applied in user identity/authority verification, instruments, computer components, etc., can solve the problems of increasing the complexity of tag chips
Inactive Publication Date: 2014-08-27
北京联合世龙科技有限公司 +1
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Problems solved by technology
However, implanting existing asymmetric cryptographic algorithms in electronic tags (especially passive electronic tags) is bound to greatly increase the complexity of the tag chip
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[0052] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0053] The radio frequency electronic tag asymmetric authentication method of the present invention can be applied to general wireless radio frequency communication systems, wherein the radio frequency terminal can be other mobile devices, such as smart cards, mobile phones, etc., and correspondingly, the tag reader can also be other authentication devices or facilities. Such as smart card readers, computer hosts, access control equipment, etc., the certification center can be a self-developed system module with a function similar to the security certification center in the public key infrastructure (Public key Infrastructure, PKI), or it can directly use the PKI security certification center.
[0054] The following...
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The invention discloses a method for asymmetrically authenticating a radio frequency electronic tag. In the method, an algebraic integer a serves as a public key, and an algebraic integer b serves as a private key; wherein b=b1*sqrt(p) + b2*sqrt(q), a=b2=a1 +a2*sqrt(n); validation is accomplished by using a challenge-responder protocol; a challenge code c is a random integer; and in an expression of a responder code z=bx=z1 +z2*sqrt(n), x is an algebraic integer which is formed by mapping the c. The validation of the responder code z comprises the following two steps of: 1, validating whether the algebraic integer y=y1 +y2*sqrt(n) meets the condition that z2=ay; and 2, validating whether a preset mapping relation is formed between the responder code z and the challenge code c. Compared with the conventional symmetric cryptographic algorithm, an algorithm provided by the invention has the advantage that: an elliptic curve cryptography algorithm is simpler and relatively smaller in calculated quantity. Therefore, by adoption of the technical scheme provided by the invention in a passive electronic tag, an authentication process is accomplished, so the safety of a radio frequency identification system can be ensured, and the cost of an electronic tag chip can be effectively controlled.
Description
technical field [0001] The invention relates to an asymmetric authentication method of a radio frequency electronic tag. Background technique [0002] Radio frequency identification technology (RFID) has become a popular new technology in the world. So far, many high-tech companies, such as Philips, Siemens, Intel, Microsoft, Oracle, etc., have actively participated in the development of radio frequency identification hardware and software. The radio frequency identification system mainly includes two parts, the electronic tag and the reader. The electronic tag is the carrier of the radio frequency identification data. It is composed of a tag antenna and a tag chip. The commonly used tag chip is a passive chip. From the perspective of security, tag chips can be divided into three categories: with symmetric cryptographic algorithm (Symmetric Cryptographic Algorithm), with asymmetric cryptographic algorithm (Asymmetric Cryptographic Algorithm), and without cryptographic algori...
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IPC IPC(8): H04L9/32G06K17/00
Inventor 郑建德
Owner 北京联合世龙科技有限公司