Communication system and image obtaining device configured to transmit image data and to transmit encryption key, nontransitory computer-readable recording medium storing computer readable instructions for image obtaining device, and controlling method for image obtaining device

A non-transitory computer-readable recording medium storing computer-readable instructions for an image obtaining device,

• the image obtaining device comprising:
• an operation structure;
• a communication interface configured to communicate with a terminal;
• a processor,
• wherein the computer-readable instructions, when executed by the processor, cause the image obtaining device to:
• generate image data based on either of a first obtaining instruction for a pull scan received from the terminal via the communication interface or a second obtaining instruction for a push scan input on the operation structure;
• generate encrypted image data using an encryption key and the image data generated based on the first obtaining instruction;
• transmit the encrypted image data to the terminal via the communication interface;
• transmit the encryption key to the terminal via the communication interface in a first situation;
• transmit the image data generated based on the second obtaining instruction to the terminal via the communication interface;
• and
• wherein the encryption key is not transmitted to the terminal in a second situation different from the first situation,
• wherein the first situation is a situation where the image data is generated based on the first obtaining instruction and the user selects a button in a confirm screen including a device name indicating a device to transmit the encryption key, the button being for the user to agree to transmitting of the encryption key to the device, and
• the second situation is a situation where the image data is generated based on the second obtaining instruction.

A control method for an image obtaining device,

• the image obtaining device comprising an operation structure and a communication interface configured to communicate with a terminal,
• wherein the control method comprising:
• generating image data based on either of a first obtaining instruction for a pull scan received from the terminal via the communication interface or a second obtaining instruction for a push scan input on the operation structure;
• generating encrypted image data using an encryption key and the image data generated based on the first obtaining instruction;
• transmitting the encrypted image data to the terminal via the communication interface;
• transmitting the encryption key to the terminal via the communication interface in a first situation;
• transmitting the image data generated based on the second obtaining instruction to the terminal via the communication interface;
• and
• wherein the encryption key is not transmitted to the terminal in a second situation different from the first situation,
• wherein the first situation is a situation where the image data is generated based on the first obtaining instruction and the user selects a button in a confirm screen including a device name indicating a device to transmit the encryption key, the button being for the user to agree to transmitting of the encryption key to the device, and
• the second situation is a situation where the image data is generated based on the second obtaining instruction.

A communication system comprising:

• an image obtaining module;
• and
• a controller in communication with the image obtaining module and configured for communication with a terminal, the controller configured to:
• cause the image obtaining module to obtain image data;
• encrypt the image data if an instruction to obtain image data is received from the terminal by using an encryption key;
• and
• communicate either of the encrypted image data or non-encrypted image data to the terminal,
• the controller further configured to perform either of a first process or a second process, wherein:
• the first process includes communication of the encryption key to the terminal if a user initiates, at the terminal, communication of the encrypted image data to the terminal and a user authorizes communication of the encryption key, and communication of the non-encrypted image data to the terminal if a user initiates, at the image obtaining module, communication of the non-encrypted image data to the terminal;
• and
• the second process includes communication of the encryption key to the terminal if a user initiates, at the image obtaining module, communication of the encrypted image data to the terminal and the user selects a button in a confirm screen including a device name indicating a device to transmit the encryption key, wherein the button is for the user to agree to transmitting of the encryption key to the device.