物联网本体存储数据可撤销加密仿真研究

Research on Revoidable Encryption Simulation of Ontology Storage Data in Internet of Things

针对物联网密钥不可随机拆分与撤销,本体存储数据容易遭到外界入侵,导致用户隐私信息泄露,提出物联网本体存储数据可撤销加密方法。根据数据可撤销加密的理论确定双线性映射函数,通过加密撤销的困难假设构建了物联网本体存储数据可撤销模型。对存储数据进行可撤销运算,采用了周期更新思想,将用户密钥属性、用户身份以及时间进行划分,并根据访问树的节点数据对用户存储数据进行加密计算。通过主要密钥随机拆分撤销运算,根据结果对存储数据可撤销加密进行安全认证。仿真结果表明,采用可撤销加密方法能够实现物联网密钥的随机拆分,缩短用户密钥更新周期,数据安全性更高。

Because the key of the Internet of things cannot be randomly split and revoked, and the ontology stored data is easy to be invaded, this paper presented a revocable encryption method for ontology storage data in the Internet of things. According to the theory of revocable encryption, the bilinear mapping function was determined. The revocable model of ontology storage data in Internet of things ontology was constructed by assuming the difficulty of encryption revocation. The idea of periodic renewal strategy was used to divide the user key attributes, user identity and time. According to the node data of access tree, the storage data was encrypted. Through the main key, it was able to randomly split and revoke the operation. Based on the results, the security authentication for revocable encryption of storage data was achieved. Simulation results show that the revocable encryption method can achieve the random split for the key in Internet of things, shorten the update cycle of user key and improve the data security.