Abstract: Establishing inter-device communication is disclosed including receiving, using a first device, an encrypted session key sent by a second device, decrypting, based on a private key of the first device, the encrypted session key in a trusted environment to obtain a decrypted session key, and conducting, based on the decrypted session key, data communications with the second device.

Abstract: Establishing inter-device communication is disclosed including receiving, using a first device, an encrypted session key sent by a second device, decrypting, based on a private key of the first device, the encrypted session key in a trusted environment to obtain a decrypted session key, and conducting, based on the decrypted session key, data communications with the second device.

Abstract: The present invention provides methods, devices, and systems for device identity authentication. A method for identity authentication comprises: obtaining, by one or more processors associated with an authenticatee terminal, a device encryption key, obtaining, by one or more processors associated with the authenticatee terminal, second data based at least in part on the device encryption key and first data, wherein obtaining the second data comprises at least one of signing or encrypting the first data, and the first data comprises a random number, generating, by one or more processors associated with the authenticatee terminal, an authentication code based at least in part on the second data and an identifier (ID) of the authenticatee terminal, and communicating, by one or more processors associated with the authenticatee terminal, the authentication code to an authenticator equipment.