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Communication method for improving security of radio frequency identification system

A technology of a radio frequency identification system and a communication method, which is applied in the field of communication to improve the security of the radio frequency identification system, can solve the problems of a long time required to access keys, a large number of keys, and low security of the key system, and achieves occupation of less resources, faster access speed, and saving key storage resources

Active Publication Date: 2012-08-01
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a communication method for improving the security of the radio frequency identification system, which is used to solve the problem that the number of keys stored in the database in the prior art is too large and the access keys need Problems such as long time and low system security due to the periodicity of the key

Method used

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  • Communication method for improving security of radio frequency identification system
  • Communication method for improving security of radio frequency identification system
  • Communication method for improving security of radio frequency identification system

Examples

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Effect test

Embodiment 1

[0031] The present invention provides a communication method for improving the security of a radio frequency identification system. The radio frequency identification system at least includes a tag, a reader-writer communicating with the tag, and an application for controlling the reader-writer and processing data information of the tag System (not shown). In this example, please refer to Figure 2 to Figure 5 The communication method for improving the security of the radio frequency identification system of the present invention adds a high-privilege access process and a high-privilege state. The tag in the open state can enter the high-privilege state through the high-privilege access process. In this state, the reader The content and length of the key can be modified to improve the security of the system, such as image 3 As shown, the communication method for improving the security of the radio frequency identification system at least includes the following steps:

[0032] S...

Embodiment 2

[0043] In this example, please refer to Image 6 , It is displayed that the tag can only enter the high-privilege state through the high-privilege access process in the safe state, that is, the tag in the open state must enter the secure state through the effective access process, and can pass the high-privilege state in the safe state The access process enters a high-privilege state. As shown in the figure, the communication method for improving the security of the radio frequency identification system of the present invention is compared with the first embodiment. The tag is added to the high-privileged state only in the secure state through the high-privilege access process, because the tag changes from the open state to the secure state Need to check the access key through the access process, so Image 6 The high-privilege state is the most secure. In the specific implementation process, in the step S102, after the tag goes through the inventory and opening process, it need...

Embodiment 3

[0045] In this example, please refer to Figure 7 , The tags displayed in the open and secure state can be entered into the high-privilege state through the more secure high-privilege access process. In the state of high-privilege access, the reader can modify the content and length of the key. Thereby improving the security of the system. In other words, in the open or secure state, the reader and the tag go through a high-privileged access process to make the tag enter a high-privileged state. In this state, the reader can modify the relevant information by sending the key. The instruction method modifies the content and length of the key. After the tag returns the successful modification message, the new key replaces the old key and is stored in the corresponding key storage location. It should be noted that the process of the tag request to enter the high-privilege access is the same as the process described in Embodiment 1 and Embodiment 2, and will not be repeated here.

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Abstract

The invention provides a communication method for improving the security of a radio frequency identification system. The communication method mainly comprises the steps as follows: adding a space for pre-storing a high-permission access password in a physical storage space of a label and a driver for sending an instruction with a preset format in a mapping rule of a read-write device, and enabling the label to identify and respond; checking and opening the label, and feeding back a random number according to a random number obtaining instruction sent by the read-write device; sending the instruction with the preset format including an xor result of the random number and a key to the label by the read-write device; comparing the analyzed key with the high-permission access password by the label, and sending a key update instruction including the length and the content of a new key to the label by the read-write device after the label is in a high-permission state; and enabling the label to update the key and replace the pre-stored high-permission access password. Therefore, the problems of a large amount of keys stored in the traditional database, long key access time and low system security due to the periodicity of the key are solved.

Description

Technical field [0001] The invention relates to a radio frequency identification technology, in particular to a communication method for improving the safety of a radio frequency identification system. Background technique [0002] With the continuous expansion of the scope and scale of the radio frequency identification system in practical applications, its data security has attracted more and more attention from the industry. At present, in order to improve the security of the radio frequency identification system, various effective methods have been proposed. The most typical methods are security authentication and data encryption. Through the process of security authentication, one-way or multi-way authentication can be performed between tags and readers to prevent mismatched readers or tags from stealing data to undermine the security of the entire system. The method of data encryption is to use an encryption algorithm to encrypt the data communication between the reader an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K17/00H04L9/08
Inventor 晏莎莎叶显阳梅年松张钊锋邵轲李海峰
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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