The invention relates to the technical field of
network security, in particular to an
Internet of Things data
secure transmission method and an
Internet of Things data
secure transmission system.The
system comprises
Internet of Things equipment and an Internet of Things platform, service
plaintext data and a first symmetric key are generated through
the Internet of Things equipment, and the service
plaintext data and an
equipment serial number are encrypted to obtain a
ciphertext; the method comprises the following steps: firstly, using a platform
encryption public key to encrypt a first symmetric key, using a platform
encryption public key to encrypt the first symmetric key, meanwhile, using an equipment signature private key to sign business
plaintext data by
the Internet of Things equipment, sending a
ciphertext, the encrypted first symmetric key and signature data to an Internet of Things platform by
the Internet of Things equipment, using the platform
encryption private key to decrypt the first symmetric key by the platform, and sending the first symmetric key to the Internet of Things equipment; and decrypting the
ciphertext to obtain the service plaintext data and the
equipment serial number, and querying the equipment signature public key through the
equipment serial number to verify the signature data. And after the
verification succeeds, the Internet of Things platform processes the service plaintext data. According to the invention, the security of Internet of Things
data transmission is ensured, and the method is suitable for various Internet of Things application scenes.