Method for ensuring data transmission safety of Internet of things

The invention relates to the technical field of Internet of things, and discloses a method for ensuring the data transmission safety of Internet of things. The method comprises the following specific steps of 1, when data are transmitted by a sensing terminal, encrypting data by adopting a symmetric algorithm key to generate encrypted data; 2, encrypting the symmetric algorithm key by adopting the public key of a corresponding server with a non-symmetric algorithm through the sensing terminal, and generating an encrypted key; 3, transmitting the encrypted data and the encrypted key to the corresponding server of the sensing terminal; and 4, decrypting the encrypted key with the private key of the server to obtain a symmetric algorithm key, and decrypting the encrypted data by adopting the symmetric algorithm key to obtain data. According to the method, transmitted data are encrypted on the sensing terminal of the Internet of things, and corresponding encryption is performed at a server terminal, so that data