Internet of things system based on security orientation and group sharing

An Internet of Things (IoT) system, comprising:

• a cloud account server, configured to manage user accounts corresponding to users respectively, wherein each of the users can apply for a user account with the cloud account server, and the users comprise a first user;
• a plurality of IoT devices, communicating with the cloud account server respectively, wherein the plurality of IoT devices include a first IoT device corresponding to the first user, and the first IoT device preserves a first authorization list set by the first user;
• a plurality of peripheral devices, including a first peripheral device connected to or communicating with the first IoT device;
• a cloud machine server;
• a STUN cloud server;
• and
• a P2P information exchange cloud server,
• wherein,
• the first IoT device determines whether other users possess a first authority to access the first peripheral device based on the first authorization list, and
• the cloud account server further comprises a private key, and a public key corresponding to the private key;
• the cloud machine server further comprises a private key, and a public key corresponding to the private key;
• the STUN cloud server further comprises a private key, and a public key corresponding to the private key;
• the P2P information exchange cloud server further comprises a private key, and a public key corresponding to the private key;
• each of the users further possesses a corresponding output/input device, wherein the first user possesses a first output/input device, the first output/input device comprises a private key, and a public key corresponding to the private key;
• the plurality of IoT devices further comprise a second IoT device corresponding to a second user, wherein the first IoT device comprises a private key, and a public key corresponding to the private key, and the second IoT device comprises a private key, and a public key corresponding to the private key;
• and
• the first peripheral device further comprises a private key, and a public key corresponding to the private key.