At present,the privacy preserving encryption algorithm of the Internet of things needs a large storage space and high computational complexity,which is not suitable for the large number of users of the Internet of things,large amount of computation and small storage space.For this,a new kind of small storage space under the Internet privacy protection encryption algorithm was put forward,the database in the Internet of things in the process of decomposition,using dynamic encryption technology to generate keys,which is suitable for small storage space environment.According to the auxiliary random servers and single database network privacy protection on the thought of small storage space objects,through the dynamic transformation encryption for data encryption technology,using online query preprocessing and two stages of realization of Internet privacy protection of user information.The experimental results show that the proposed algorithm can be used to protect the privacy of the Internet of things,which has the advantages of strong functionality and security,short time,and can guarantee the integrity of the encrypted privacy information.%当前物联网隐私保护加密算法所需存储空间较大,且计算复杂度高,不适于物联网用户众多、计算量大且存储空间较小的情况.为此,提出一种新的较小存储空间下物联网隐私保护加密算法.在对物联网中数据库关系进行分解的过程中,选用动态加密技术动态地产生密钥,使其适于较小存储空间环境.依据多辅助随机服务器和单数据库的思想对较小存储空间下物联网进行隐私保护,通过动态变换加密技术对数据进行加密后,利用预处理与在线查询两个阶段实现物联网用户信息的隐私保护.实验结果表明,采用所提算法进行物联网隐私保护加密,功能性和安全性较强,所需时间短,且能够保证加密隐私信息的完整性.
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