Data interaction method and device based on Internet of Things

The invention discloses a data interaction method and device based on the Internet of Things. The method comprises the following steps: acquiring a first identity identifier and first encrypted data of first terminal equipment sent by the first terminal equipment, searching a first data set in a multi-order query table according to a first index position, searching a first decryption key in the first storage table according to the first storage position information under the condition that the first data set is searched in the multi-order query table, and under the condition that the first decryption key is found in the first storage table, decrypting the first encrypted data in the first data packet by using the first decryption key to obtain the original data. According to the invention,the technical problems of complex terminal key management and high development cost caused by dependence on a product key when the terminal key is managed through a cloud technology are solved. 本发明公开了一种基于物联网的数据交互方法和装置。其中，该方法