期刊名称：International Journal of Security and Its Applications
印刷版ISSN：1738-9976
出版年度：2016
卷号：10
期号：9
页码：185-192
出版社：SERSC
摘要：In practice, the tag may have multiple owners with different weights, and there are some owners who may sell their more or less weights to other owners. Therefore, the weights of all the owners may vary in life cycle of the tag, so the ownership needs to be dynamically updated and the key value needs to be changed in a timely manner. To solve this problem, the paper proposes a dynamic ownership transfer protocol of RFID tagbased on Lagrange to implement the transfer of multi-owner with different weights. When there is a change on the weights of the owners, the agreement will recover the original secret key under certain conditions that the sum of the weights on the owners involved in the restoration of the key is equal to or greater than t and verify the legitimacy of the original owners. The new key is divided into n parts by secret sharing scheme, and then the owner gets the corresponding sub secret key according to the weight. Thereby it enhances the security and flexibility in the practical application of the ownership transformation.
