Information processing apparatus and information processing method

1. An information processing system comprising:

a portable terminal device; and

an information processing apparatus,

the portable terminal device including

a first communication unit that establishes wireless communication with the information processing apparatus when the information processing apparatus is present within a first communication range, and that transmits encrypted data to the information processing apparatus; and

a second communication unit that establishes communication with the information processing apparatus when the information processing apparatus is present within a second communication range shorter than the first communication range, and that transmits decryption information used for decrypting the encrypted data to the information processing apparatus, and

the information processing apparatus including

a third communication unit that establishes wireless communication with the portable terminal device based on a first communication protocol same as that of the first communication unit when the portable terminal device is present within the first communication range, and that receives the encrypted data from the portable terminal device;

a fourth communication unit that establishes communication with the portable terminal device based on a second communication protocol same as that of the second communication unit when the portable terminal device is present within the second communication range, and that receives the decryption information from the portable terminal device; and

a decryption unit that decrypts the encrypted data received by the third communication unit with the decryption information received by the fourth communication unit.

2. The information processing system according to claim 1 , wherein

the first communication unit transmits first identification information that identifies the decryption information to the information processing apparatus together with the encrypted data,

the second communication unit transmits second identification information that identifies the decryption information to the information processing apparatus together with the decryption information,

the third communication unit receives the first identification information from the portable terminal device together with the encrypted data,

the fourth communication unit receives the second identification information from the portable terminal device together with the decryption information, and

when the first identification information and the second identification information are identical to each other, the decryption unit decrypts the encrypted data with the decryption information.

3. An information processing apparatus for communicating wirelessly with a portable terminal device including a first communication unit and a second communication unit, the information processing apparatus comprising:

a third communication unit that establishes wireless communication with the portable terminal device based on a first communication protocol same as that of the first communication unit when the portable terminal device is present within a first communication range, and receives encrypted data from the portable terminal device;

a fourth communication unit that establishes communication with the portable terminal device based on a second communication protocol same as that of the second communication unit when the portable terminal device is present within a second communication range shorter than the first communication range, and receives decryption information from the portable terminal device; and

a decryption unit that decrypts the encrypted data received by the third communication unit with the decryption information received by the fourth communication unit.

4. The information processing apparatus according to claim 3 , wherein

the third communication unit receives first identification information from the portable terminal device together with the encrypted data,

the fourth communication unit receives second identification information from the portable terminal device together with the decryption information, and

when the first identification information and the second identification information are identical to each other, the decryption unit decrypts the encrypted data with the decryption information.

5. A method of information processing performed by an information processing apparatus for communicating wirelessly with a portable terminal device including a first communication unit and a second communication unit, the information processing apparatus including a third communication unit, a fourth communication unit and a decryption unit, the method of information processing comprising:

first establishing, by the third communication unit, wireless communication with the portable terminal device based on a first communication protocol same as that of the first communication unit when the portable terminal device is present within a first communication range, and receiving encrypted data from the portable terminal device;

second establishing, by the fourth communication unit, communication with the portable terminal device based on a second communication protocol same as that of the second communication unit when the portable terminal device is present within a second communication range shorter than the first communication range, and receiving decryption information from the portable terminal device; and

decrypting, by the decryption unit, the encrypted data received by the third communication unit with the decryption information received by the fourth communication unit.

6. The method according to claim 5 , wherein

the first establishing step includes receiving first identification information from the portable terminal device together with the encrypted data,

the second establishing step includes receiving second identification information from the portable terminal device together with the decryption information, and

the decrypting step includes decrypting the encrypted data with the decryption information when the first identification information and the second identification information are identical to each other.