Printer, only when authentication is successful, enables command for set period of time to acquire data and disables command after period of time elapses, communication method, encryption method, and non-transitory computer-readable recording medium

1. A printer capable of communicating with an external apparatus, the printer comprising a processor configured to:

execute one of commands to perform corresponding processing with regard to the printer;

disable a first command among the commands, the first command being to acquire data from the external apparatus;

determine whether an authentication result is successful based on predetermined code information;

when the authentication result has been successful, enable the first command for a period of time, and disable the first command after the period of time has elapsed, the period of time being set with respect to the first command; and

when the first command is received from the external apparatus within the period of time, acquire, from the external apparatus, data required for encrypted communication, and encrypt the data by use of an encryption key generated based on random data and identification data associated with the printer.

2. The printer according to claim 1 , wherein the processor is further configured to:

generate a one-time password as the code information; and

acquire the authentication result, the authentication result being an authentication result with regard to the one-time password generated by the processor.

3. The printer according to claim 1 , wherein the processor is further configured to:

acquire the code information from the external apparatus, and

enable the first command from the external apparatus, when the authentication result for the code information acquired by the processor has been successful.

4. The printer according to claim 1 , wherein the processor is further configured to enable or disable a communication port based on an operational input.

5. A communication method for a printer to communicate with an information processing apparatus, the method comprising:

disabling a first command among commands for performing processing with regard to the printer, the first command being to acquire data from the information processing apparatus;

determining whether an authentication result is successful based on predetermined code information;

when the authentication result has been successful, enabling the first command for a period of time, and disabling the first command after the period of time has elapsed, the period of time being set with respect to the first command; and

when the first command is received from the external apparatus within the period of time, acquiring, from the external apparatus, data required for encrypted communication, and encrypting the data by use of an encryption key generated based on random data and identification data associated with the printer.

6. A non-transitory computer-readable recording medium including a program, the program enabling a computer to perform a method when installed in a printer, the method comprising:

disabling a first command among commands for performing processing with regard to the printer, the first command being to acquire data from an information processing apparatus;

determining whether an authentication result is successful based on predetermined code information;

when the authentication result has been successful, enabling the first command for a period of time, and disabling the first command after the period of time has elapsed, the period of time being set with respect to the first command; and

when the first command is received from the external apparatus within the period of time, acquiring, from the external apparatus, data required for encrypted communication, and encrypting the data by use of an encryption key generated based on random data and identification data associated with the printer.