Apparatus and method for drone control data security

An apparatus for drone control data security, comprising:

• memory in which at least one program is recorded;
• and
• a processor for executing the program,
• wherein:
• the program decrypts control data encrypted in a unit of a block based on a counter block configured using a nonce value corresponding to a nonce change reference counter value received along with the encrypted control data when receiving the encrypted control data,
• the nonce value initialized to an initial nonce value changes sequentially according to a predetermined sequence each time control data is encrypted, and
• the nonce change reference counter value increases each time the nonce value changes.

A method for drone control data security, comprising:

• when receiving encrypted control data, a nonce change reference counter, and an authentication value, determining validity of the received control data based on a difference between a first nonce change reference counter value that is currently received and a second nonce change reference counter value that is received immediately before the first nonce change reference counter value;
• when the control data is determined to be valid, performing authentication by comparing the received authentication value with an authentication value generated using the control data in an encrypted block unit and additional authentication data;
• and
• when the authentication succeeds, decrypting the control data in an encrypted block unit based on a counter block configured using a nonce value corresponding to the first nonce change reference counter value,
• wherein:
• the nonce value initialized to an initial nonce value changes sequentially according to a predetermined sequence each time control data is encrypted, and
• the nonce change reference counter value increases each time the nonce value changes.