Vehicle and method of controlling the same

A vehicle comprising:

• at least one memory configured to store at least one default Instruction Structure Key (ISK), a generated ISK, and a pin code of the vehicle;
• and
• at least one processor,
• wherein the at least one default ISK comprises a first default ISK and a second default ISK, and
• wherein the at least one processor is configured to:
• generate a random number using the first default ISK;
• receive the second default ISK encrypted with the generated ISK generated based on the pin code;
• and
• when the generated random number and a random number corresponding to the second default ISK are the same, determine the generated ISK as an encryption key for encryption communication of the vehicle,
• wherein the at least one processor comprises a first processor and a second processor,
• wherein the first processor is configured to:
• receive a number A that is the random number generated by the second processor;
• generate the generated ISK based on the number A;
• and
• when the received number A and the random number corresponding to the generated ISK are the same, determine the generated ISK as a code for temporary use, and
• wherein the second processor is configured to:
• receive a number B that is the random number generated by the first processor;
• generate 16 bytes based on the number B;
• and
• when the received number B and the random number corresponding to the 16 bytes are the same, determine the generated ISK as a code for the encryption communication of the vehicle.