带权重的多所有者标签所有权动态转换协议

Tag dynamic ownership transfer protocol for multi-owner with weights

采用拉格朗日插值算法,提出了一种带有不同权重的多所有者标签所有权动态转换协议。当标签所有权发生变化时,该协议能恢复出原有密钥,验证所有者的合法性,并使用秘密共享门限方案,根据所有者的新权重重新分发子密钥,提高了所有权转换的安全性和灵活性。对该协议进行了仿真实验,实验结果表明,该协议具有较低的计算量和较少的计算时间,适用于低成本的RFID标签。

A dynamic ownership transfer protocol of RFID tag based on Lagrange algorithm was proposed to achieve the transfer for multi-owner with different weights. When the ownership of a tag changed, the agreement could recover the original secret key to verify the legitimacy of the owners, and use secret sharing algorithm to re- distribute sub-key according to the new weights of the owners to make the security and flexibility of the ownership transfer improved. The simulation is carried out to show that it adapts to a low-cost RFID tag because the calculation and time consuming are low in the protocol.