Abstract: A first electronic device according to various embodiments of the disclosure may include: a communication circuit, and at least one processor. The at least one processor may be configured to: receive, through the communication circuit, a first public key and a first request for a first symmetric key from a second electronic device, encrypt the first symmetric key using the first public key, transmit, through the communication circuit, the encrypted first symmetric key to the second electronic device, generate at least one second symmetric key corresponding to at least one object, encrypt the at least one object using the generated at least one second symmetric key, encrypt each of the at least one second symmetric key using the first symmetric key, and transmit, through the communication circuit, the encrypted at least one object and the encrypted at least one second symmetric key to the second electronic device.

Abstract: An electronic device includes a communication circuit, and at least one processor connected to the communication circuit. The at least one processor may be configured to broadcast a device identification (ID) of the electronic device and an Internet protocol (IP) address of the electronic device through the communication circuit. The at least one processor may be configured to receive a token encrypted by an external electronic device and data of the external electronic device through the communication circuit. The at least one processor may be configured to decrypt the encrypted token by using a private key of the electronic device. The at least one processor may be configured to transmit the data of the external electronic device to a server in a cloud by using the decrypted token through the communication circuit.

Abstract: An electronic device includes a communication circuit, and at least one processor connected to the communication circuit. The at least one processor may be configured to broadcast a device identification (ID) of the electronic device and an Internet protocol (IP) address of the electronic device through the communication circuit. The at least one processor may be configured to receive a token encrypted by an external electronic device and data of the external electronic device through the communication circuit. The at least one processor may be configured to decrypt the encrypted token by using a private key of the electronic device. The at least one processor may be configured to transmit the data of the external electronic device to a server in a cloud by using the decrypted token through the communication circuit.

Abstract: A first electronic device according to various embodiments of the disclosure may include: a communication circuit, and at least one processor. The at least one processor may be configured to: receive, through the communication circuit, a first public key and a first request for a first symmetric key from a second electronic device, encrypt the first symmetric key using the first public key, transmit, through the communication circuit, the encrypted first symmetric key to the second electronic device, generate at least one second symmetric key corresponding to at least one object, encrypt the at least one object using the generated at least one second symmetric key, encrypt each of the at least one second symmetric key using the first symmetric key, and transmit, through the communication circuit, the encrypted at least one object and the encrypted at least one second symmetric key to the second electronic device.