| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a new and improved technology that enables an information processing device to possess the right to determine the degree of safety-strength in communication between an operation terminal and the information processing device, in an information processing system wherein a key is divided, according to the number for dividing the key which the operation terminal specifies and returned by the information processing system. <P>SOLUTION: The information processing device 100 is provided with a security-level determining unit 133, that determines the security level upon transmitting the keys to the operation terminal 200 as a transmission security level; a transmission-power determining unit 134 that determines transmission power, according to the transmission security level and the number for dividing the key and which is included in key-transmission requests; a key-obtaining unit 135 that obtains each of the divided keys by dividing the key into the key-dividing number; and a transmission unit 160, that transmits each of the divided keys obtained by the key obtaining unit 135 to the operation terminal 200 with a radio signal, by using the transmission power determined by the transmission power determining unit 134. <P>COPYRIGHT: (C)2011,JPO&INPIT |
