Through improved similarity analysis algorithm and hybrid local sensitivity hashing method, information is summarized and retrieved by information retrieval method based on EPC network architecture. This method does not consider the symmetry of information, and its retrieval effect is poor, security is low, and resource occupancy rate is high. Therefore, the information iterative retrieval of IoT communication terminal based on symmetric algorithm is proposed to solve these problems. The symmetric private information retrieval protocol based on secret sharing is used to obtain the information set with retrieval, and the Paillier homomorphic information retrieval method is used to obtain the original document of the information communication terminal information. Then, the information detection model based on the iterative algorithm is used to obtain information of the IoT communication terminal. The experimental results show that the retrieval accuracy of the proposed method is higher than 96% when the document set is less than 1000 KB, and the retrieval accuracy is 94.47% when the document set is 10 TB. The CPU usage and memory usage of this method are 8.65 and 3.24%, respectively. Experiments show that the proposed method has extremely high retrieval accuracy and low energy consumption.

通过改进的相似度分析算法和混合局部灵敏度哈希算法，利用基于EPC网络架构的信息检索方法对信息进行汇总和检索。该方法没有考虑信息的对称性，检索效果差，安全性低，资源占用率高。因此，提出了基于对称算法的物联网通信终端信息迭代检索方法。使用基于秘密共享的对称私有信息检索协议来获得带有检索的信息集，并且使用Paillier同态信息检索方法来获得信息通信终端信息的原始文档。然后，基于迭代算法的信息检测模型用于获取物联网通信终端的信息。实验结果表明，当文档集小于1000 KB时，该方法的检索精度高于96％，而文档集为10 TB时，该方法的检索精度为94.47％。此方法的CPU使用率和内存使用率分别为8.65％和3.24％。实验表明，该方法具有很高的检索精度和较低的能耗。分别。实验表明，该方法具有很高的检索精度和较低的能耗。分别。实验表明，该方法具有很高的检索精度和较低的能耗。