Internet of Things authentication method based on feature of chip and block chain

The invention discloses an Internet of Things authentication method based on features of a chip and a block chain, and relates to the technical field of Internet of Things. The method specifically comprises the following steps: S10, an Internet of Things device obtains a hardware ID, a current timestamp and a random number, and generates a globally unique ID based on the hardware ID, the current timestamp and the random number; S20, the Internet of Things device sends the generated globally unique ID to an authentication end; S30, the authentication end authenticates whether the globally unique ID corresponds to the device ID stored in a library or not, if yes, authentication succeeds, and if not, authentication fails. According to the invention, the accessed Internet of Things device is verified through the registration information of the Internet of Things device stored on the block chain, and the security of the access of the Internet of Things device is ensured by using the decentration and security of th