Provided is an information processing apparatus including a security level determination section which determines a security level at a time of transmitting a key to an operation terminal, as a transmission security level, a transmission power determination section which determines a transmission power in accordance with the transmission security level and a key-dividing number included in a key transmission request, a key acquisition section which acquires each key fragment by dividing the key into the key-dividing number, and a transmission section which transmits the each key fragment acquired by the key acquisition section using the transmission power determined by the transmission power determination section, via a wireless signal to the operation terminal.