System, device, and method for communication, apparatus and method for processing information, computer program, and recording medium

• US 20080137862A1
• Filed: 05/08/2007
• Published: 06/12/2008
• Est. Priority Date: 05/12/2006
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Morita, Tadashi, Kanemoto, Toshinori
• Granted Patent: US 8,605,903 B2
• Time in Patent Office: Days
• US Class Current: 380/270
• CPC Class Codes: G06K 7/10237 the reader and the record carrier being capable of selectively switching between reader and record carrier appearance, e.g. in near field communication [NFC] devices where the NFC device may function as an RFID reader or as an RFID tag
• CPC Class Codes: H04L 2209/805 Lightweight hardware, e.g. radio-frequency identification [RFID] or sensor
• CPC Class Codes: H04L 9/0662 with particular pseudorandom sequence generator
• CPC Class Codes: H04L 9/0897 involving additional devices, e.g. trusted platform module [TPM], smartcard or USB
• CPC Class Codes: H04L 9/32 including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
• CPC Class Codes: H04W 12/02 Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
• CPC Class Codes: H04W 12/04 Key management, e.g. using generic bootstrapping architecture [GBA]
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support

Abstract

A communication system uniquely identifying a communication partner within a predetermined coverage area and transmitting and receiving information in a predetermined protocol, includes a device and an information processing apparatus with one performing wireless communication with the other within the predetermined coverage area. The device includes a random number generating unit, a device secret key storage unit, a communication ID transmitting unit, and a device transmitting and receiving unit. The information processing apparatus includes an apparatus encryption unit, an apparatus secret key storage unit, a communication ID storage unit, a random number acquisition unit and an apparatus transmitting and receiving unit.

Claims

1. A communication system uniquely identifying a communication partner within a predetermined coverage area and transmitting and receiving information in a predetermined protocol, the communication system comprising a device and an information processing apparatus with one performing wireless communication with the other within the predetermined coverage area,

the device including:

random number generating means for generating a random number;

device encryption means for encrypting or decrypting information in accordance with a predetermined algorithm based on a predetermined key;

device secret key storage means for storing a secret key, the secret key being used by the device encryption means for encryption and decryption, and being pre-shared with the information processing apparatus;

communication ID transmitting means for transmitting to the information processing apparatus a response containing a communication ID, the communication ID uniquely identifying the information processing apparatus as a communication partner, and being an ID encrypted from the random number with the secret key by the device encryption means, the random number being generated by the random number generating means in response to a poll transmitted from the information processing apparatus; and

device transmitting and receiving means for transmitting or receiving information to or from the information processing apparatus, the information being encrypted or decrypted by the device encryption means using as a key the random number generated by the random number generating means; and

the information processing apparatus including;

apparatus encryption means for encrypting or decrypting information in accordance with an algorithm predetermined based on a predetermined key;

apparatus secret key storage means for storing a secret key, the secret key being used by the apparatus encryption means for encryption or decryption, and being pre-shared with the device;

communication ID storage means for storing the communication ID contained in the response transmitted and then received from the device in response to the poll, the communication ID being as an identifier for uniquely identifying the device as a communication partner;

random number acquisition means for acquiring the random number by decrypting the communication ID with the secret key with the apparatus encryption means; and

apparatus transmitting and receiving means for transmitting or receiving information to or from the device, the information being encrypted or decrypted with the random number as a key acquired by the random number acquisition means with the apparatus encryption means.

2. A communication method of a communication system uniquely identifying a communication partner within a predetermined coverage area and transmitting and receiving information in a predetermined communication protocol, the communication system including a device and an information processing apparatus with one performing wireless communication with the other within the predetermined coverage area, the method comprising steps of:

generating a random number;

transmitting to the information processing apparatus a response containing a communication ID, the communication ID uniquely identifying the information processing apparatus as a communication partner, and being produced by encrypting in accordance with a predetermined algorithm with a secret key pre-shared with the information processing apparatus a random number generated in response to a poll transmitted from the information processing apparatus;

transmitting or receiving information to or from the information processing apparatus, the information being encrypted or decrypted in accordance with the algorithm with the generated random number as a key;

storing as an identifier the communication ID contained in the response transmitted and then received from the device in response to the poll, the identifier being used to identify uniquely the device as a communication partner;

acquiring the random number by decrypting the communication ID in accordance with a predetermined algorithm using the secret key pre-shared with the device; and

transmitting or receiving information to or from the device, the information encrypted or decrypted in accordance with the algorithm using the acquired random number as a key.

3. A device in a communication system uniquely identifying a communication partner within a predetermined coverage area and transmitting and receiving information in a predetermined protocol, the communication system including the device and an information processing apparatus with one performing wireless communication with the other within the predetermined coverage area, the device comprising:

random number generating means for generating a first random number;

device encryption means for encrypting or decrypting information in accordance with a predetermined algorithm based on a predetermined key;

device secret key storage means for storing a secret key, the secret key being used by the device encryption means for encryption and decryption, and being pre-shared with the information processing apparatus;

communication ID transmitting means for transmitting to the information processing apparatus a response containing a communication ID, the communication ID uniquely identifying the information processing apparatus as a communication partner, and being an ID encrypted from the first random number with the secret key by the device encryption means, the first random number being generated by the random number generating means in response to a poll transmitted from the information processing apparatus; and

device transmitting and receiving means for transmitting or receiving information to or from the information processing apparatus, the information being encrypted or decrypted by the device encryption means using as a key the first random number generated by the random number generating means.

4. The device according to claim 3, wherein the communication protocol of the communication system comprises a near field communication interface and protocol-1 (NFCIP-1) standardized as ISO/IEC 18092, and

wherein the communication ID transmitting means embeds as the communication ID an NFC identifier in accordance with NFCIP-1, the NFC identifier being used in RF collision avoidance and single device detection.

5. The device according to claim 3, further comprising ID storage means for storing a ID unique to the device, wherein when a request to read the unique ID is received from the information processing apparatus, the device encryption means encrypts the unique ID stored on the ID storage means using as a key the first random number generated by the random number generating means and transmits the encrypted unique ID to the information processing apparatus.

6. The device according to claim 5, further comprising determination means for determining whether the unique ID has been encrypted and then transmitted to the information processing apparatus,

wherein when the determination means determines that the unique ID has been encrypted and transmitted to the information processing apparatus, the device transmitting and receiving means encrypts or decrypts information to be communicated with the information processing apparatus.

7. The device according to claim 3, wherein the device transmitting and receiving means controls the device encryption means to encrypt or decrypt information to be communicated with the information processing apparatus using the first random number generated by the random number generating means and a second random number encrypted with the secret key and transmitted from the information processing apparatus during the poll or a next transmission of the poll.

8. A communication method of a device in a communication system uniquely identifying a communication partner within a predetermined coverage area and transmitting and receiving information in a predetermined protocol, the communication system including the device and an information processing apparatus with one performing wireless communication with the other within the predetermined coverage area, the method comprising steps of:

generating a random number;

transmitting to the information processing apparatus a response containing a communication ID, the communication ID uniquely identifying the information processing apparatus as a communication partner, and being produced by encrypting in accordance with a predetermined algorithm with a secret key pre-shared with the information processing apparatus a random number produced in response to a poll transmitted from the information processing apparatus; and

transmitting or receiving information, the information being encrypted or decrypted in accordance with the algorithm using the generated random number as a key.

9. A computer readable program for causing a device to perform a communication method of the device in a communication system uniquely identifying a communication partner within a predetermined coverage area and transmitting and receiving information in a predetermined protocol, the communication system including the device and an information processing apparatus with one performing wireless communication with the other within the predetermined coverage area, the computer readable program comprising steps of:

generating a random number;

transmitting to the information processing apparatus a response containing a communication ID, the communication ID uniquely identifying the information processing apparatus as a communication partner, and being produced by encrypting in accordance with a predetermined algorithm with a secret key pre-shared with the information processing apparatus a random number produced in response to a poll transmitted from the information processing apparatus; and

transmitting or receiving information, the information being encrypted or decrypted in accordance with the algorithm using the generated random number as a key.

10. A recording medium recording the computer readable program according to claim 9.

11. An information processing apparatus in a communication system uniquely identifying a communication partner within a predetermined coverage area and transmitting and receiving information in a predetermined protocol, the communication system including a device and the information processing apparatus with one performing wireless communication with the other within the predetermined coverage area, the information processing apparatus comprising:

apparatus encryption means for encrypting or decrypting information in accordance with a predetermined algorithm based on a predetermined key;

apparatus secret key storage means for storing a secret key, the secret key being used by the apparatus encryption means for encryption or decryption, and being pre-shared with the device;

communication ID storage means for storing a communication ID contained in a response transmitted and then received from the device in response to a poll, the communication ID being as an identifier uniquely identifying the device as a communication partner;

random number acquisition means for acquiring a first random number by decrypting the communication ID with the secret key with the apparatus encryption means; and

apparatus transmitting and receiving means for transmitting or receiving information to or from the device, the information being encrypted or decrypted by the apparatus encryption means with the first random number acquired by the random number acquisition means.

12. The information processing apparatus according to claim 11, wherein the communication protocol of the communication system comprises a near field communication interface and protocol-1 (NFCIP-1) standardized as ISO/IEC 18092, and

wherein the communication ID storage means stores, as the communication ID, an NFC identifier being obtained in the response transmitted from the device in response to the poll and being used in RF collision avoidance and single device detection in NFCIP-1.

13. The information processing apparatus according to claim 11, wherein when the unique ID of the device is read, the apparatus transmitting and receiving means encrypts or decrypts information to be communicated with the device.

14. The information processing apparatus according to claim 11, further comprising random number generating means for generating a second random number,

wherein the apparatus transmitting and receiving means encrypts the second random number with the secret key and transmits the encrypted second random number to the device during the poll or at a next transmission of the poll, and controls the apparatus encryption means to encrypt or decrypt information to be communicated with the device using the first random number acquired by the random number acquisition means and the second random number.

15. An information processing method of an information processing apparatus in a communication system uniquely identifying a communication partner within a predetermined coverage area and transmitting and receiving information in a predetermined protocol, the communication system including a device and the information processing apparatus with one performing wireless communication with the other within the predetermined coverage area, the information processing method comprising steps of:

storing a communication ID contained in a response transmitted and then received from the device in response to a poll, the communication ID being an identifier uniquely identifying the device as a communication partner;

acquiring a random number by decrypting the communication ID in accordance with an algorithm, the algorithm predetermined using a secret key pre-shared with the device; and

transmitting or receiving information to and from the device, the information being encrypted or decrypted in accordance with the algorithm using the acquired random number as a key.

16. A computer readable program for causing an information processing apparatus to perform a communication processing method of a communication system uniquely identifying a communication partner within a predetermined coverage area and transmitting and receiving information in a predetermined protocol, the communication system including a device and the information processing apparatus with one performing wireless communication with the other within the predetermined coverage area, the computer readable program comprising steps of:

storing a communication ID contained in a response transmitted and then received from the device in response to a poll, the communication ID being an identifier uniquely identifying the device as a communication partner;

acquiring a random number by decrypting the communication ID in accordance with an algorithm, the algorithm predetermined using a secret key pre-shared with the device; and

transmitting or receiving information to and from the device, the information being encrypted or decrypted in accordance with the algorithm using the acquired random number as a key.

17. A recording medium storing the computer readable program according to claim 16.

18. A communication system uniquely identifying a communication partner within a predetermined coverage area and transmitting and receiving information in a predetermined protocol, the communication system comprising a device and an information processing apparatus with one performing wireless communication with the other within the predetermined coverage area,

the device including:

device random number generating means for generating a first random number;

device encryption means for encrypting or decrypting information in accordance with a predetermined algorithm based on a predetermined key;

device secret key storage means for storing a secret key, the secret key being used by the device encryption means for encryption and decryption, and being pre-shared with the information processing apparatus;

communication ID transmitting means for transmitting to the information processing apparatus a response containing a communication ID, the communication ID uniquely identifying the information processing apparatus as a communication partner, and being an ID encrypted from the first random number with the secret key by the device encryption means, the first random number being generated by the device random number generating means in response to a poll transmitted from the information processing apparatus; and

device transmitting and receiving means for controlling the device encryption means to encrypt or decrypt information to be communicated with the information processing apparatus using the first random number generated by the random number generating means and a second random number encrypted with the secret key and transmitted from the information processing apparatus during the poll or a next transmission of the poll; and

the information processing apparatus including;

apparatus random number generating means for generating the second random number;

apparatus encryption means for encrypting or decrypting information in accordance with a predetermined algorithm based on a predetermined key;

apparatus secret key storage means for storing a secret key, the secret key being used by the apparatus encryption means for encryption or decryption, and being pre-shared with the device;

communication ID storage means for storing the communication ID contained in the response transmitted and then received from the device in response to the poll, the communication ID being an identifier uniquely identifying the device as a communication partner;

random number acquisition means for acquiring the first random number by decrypting the communication ID with the secret key with the apparatus encryption means; and

apparatus transmitting and receiving means for encrypting the second random number with the secret key and transmitting the encrypted second random number to the device during the poll or a next transmission of the poll, and controlling the device encryption means to encrypt or decrypt information to be communicated with the device using the first random number acquired by the random number acquisition means and the second random number.

19. A communication method of a communication system uniquely identifying a communication partner within a predetermined coverage area and transmitting and receiving information in a predetermined protocol, the communication system including a device and an information processing apparatus with one performing wireless communication with the other within the predetermined coverage area, the method comprising steps of:

generating a first random number;

transmitting to the information processing apparatus a response containing a communication ID, the communication ID uniquely identifying the information processing apparatus as a communication partner, and being produced by encrypting in accordance with a predetermined algorithm with a secret key pre-shared with the information processing apparatus the first random number generated in response to a poll transmitted from the information processing apparatus;

transmitting or receiving information to or from the information processing apparatus, the information being encrypted or decrypted in accordance with the algorithm using as keys the generated first random number and a second random number encrypted with the secret key and transmitted from the information processing apparatus during the poll or at a next transmission of the poll;

generating a second random number;

storing the communication ID contained in the response transmitted and then received from the device in response to the poll, the communication ID being an identifier uniquely identifying the device as a communication partner;

acquiring the first random number by decrypting the communication ID with the secret key pre-shared with the device in accordance with a predetermined algorithm; and

encrypting the second random number with the secret key and transmitting the encrypted secret key to the device during the poll or a next transmission of the poll, and transmitting or receiving information, the information being encrypted or decrypted in accordance with the algorithm using the acquired first random number and the second random number.

20. A communication system uniquely identifying a communication partner within a predetermined coverage area and transmitting and receiving information in a predetermined protocol, the communication system comprising a device and an information processing apparatus with one performing wireless communication with the other within the predetermined coverage area,

the device including:

a random number generating unit generating a random number;

a device encryption unit encrypting or decrypting information in accordance with a predetermined algorithm based on a predetermined key;

a device secret key storage unit storing a secret key, the secret key being used by the device encryption unit for encryption and decryption, and being pre-shared with the information processing apparatus;

a communication ID transmitting unit transmitting to the information processing apparatus a response containing a communication ID, the communication ID uniquely identifying the information processing apparatus as a communication partner, and being an ID encrypted from the random number with the secret key by the device encryption unit, the random number being generated by the random number generating unit in response to a poll transmitted from the information processing apparatus; and

a device transmitting and receiving unit transmitting or receiving information to or from the information processing apparatus, the information being encrypted or decrypted by the device encryption unit using as a key the random number generated by the random number generating unit; and

the information processing apparatus including;

an apparatus encryption unit encrypting or decrypting information in accordance with an algorithm predetermined based on a predetermined key;

an apparatus secret key storage unit storing a secret key, the secret key being used by the apparatus encryption unit for encryption or decryption, and being pre-shared with the device;

a communication ID storage unit storing the communication ID contained in the response transmitted and then received from the device in response to the poll, the communication ID being as an identifier for uniquely identifying the device as a communication partner;

a random number acquisition unit acquiring the random number by decrypting the communication ID with the secret key with the apparatus encryption unit; and

an apparatus transmitting and receiving unit transmitting or receiving information to or from the device, the information being encrypted or decrypted with the random number as a key acquired by the random number acquisition unit with the apparatus encryption unit.

21. A device in a communication system uniquely identifying a communication partner within a predetermined coverage area and transmitting and receiving information in a predetermined protocol, the communication system including the device and an information processing apparatus with one performing wireless communication with the other within the predetermined coverage area, the device comprising:

a random number generating unit generating a first random number;

a device encryption unit encrypting or decrypting information in accordance with a predetermined algorithm based on a predetermined key;

a device secret key storage unit storing a secret key, the secret key being used by the device encryption unit for encryption and decryption, and being pre-shared with the information processing apparatus;

a communication ID transmitting unit transmitting to the information processing apparatus a response containing a communication ID, the communication ID uniquely identifying the information processing apparatus as a communication partner, and being an ID encrypted from the first random number with the secret key by the device encryption unit, the first random number being generated by the random number generating unit in response to a poll transmitted from the information processing apparatus; and

a device transmitting and receiving unit transmitting or receiving information to or from the information processing apparatus, the information being encrypted or decrypted by the device encryption unit using as a key the first random number generated by the random number generating unit.

22. An information processing apparatus in a communication system uniquely identifying a communication partner within a predetermined coverage area and transmitting and receiving information in a predetermined protocol, the communication system including a device and the information processing apparatus with one performing wireless communication with the other within the predetermined coverage area, the information processing apparatus comprising:

an apparatus encryption unit encrypting or decrypting information in accordance with a predetermined algorithm based on a predetermined key;

an apparatus secret key storage unit storing a secret key, the secret key being used by the apparatus encryption unit for encryption or decryption, and being pre-shared with the device;

a communication ID storage unit storing a communication ID contained in a response transmitted and then received from the device in response to a poll, the communication ID being as an identifier uniquely identifying the device as a communication partner;

a random number acquisition unit acquiring a first random number by decrypting the communication ID with the secret key with the apparatus encryption unit; and

an apparatus transmitting and receiving unit transmitting or receiving information to or from the device, the information being encrypted or decrypted by the apparatus encryption unit with the first random number acquired by the random number acquisition unit.

23. A communication system uniquely identifying a communication partner within a predetermined coverage area and transmitting and receiving information in a predetermined protocol, the communication system comprising a device and an information processing apparatus with one performing wireless communication with the other within the predetermined coverage area,

the device including:

a device random number generating unit generating a first random number;

a device encryption unit encrypting or decrypting information in accordance with a predetermined algorithm based on a predetermined key;

a device secret key storage unit storing a secret key, the secret key being used by the device encryption unit for encryption and decryption, and being pre-shared with the information processing apparatus;

a communication ID transmitting unit transmitting to the information processing apparatus a response containing a communication ID, the communication ID uniquely identifying the information processing apparatus as a communication partner, and being an ID encrypted from the first random number with the secret key by the device encryption unit, the first random number being generated by the device random number generating unit in response to a poll transmitted from the information processing apparatus; and

a device transmitting and receiving unit controlling the device encryption unit to encrypt or decrypt information to be communicated with the information processing apparatus using the first random number generated by the random number generating unit and a second random number encrypted with the secret key and transmitted from the information processing apparatus during the poll or a next transmission of the poll; and

the information processing apparatus including;

an apparatus random number generating unit generating the second random number;

an apparatus encryption unit encrypting or decrypting information in accordance with a predetermined algorithm based on a predetermined key;

an apparatus secret key storage unit storing a secret key, the secret key being used by the apparatus encryption unit for encryption or decryption, and being pre-shared with the device;

a communication ID storage unit storing the communication ID contained in the response transmitted and then received from the device in response to the poll, the communication ID being an identifier uniquely identifying the device as a communication partner;

a random number acquisition unit acquiring the first random number by decrypting the communication ID with the secret key with the apparatus encryption unit; and

an apparatus transmitting and receiving unit encrypting the second random number with the secret key and transmitting the encrypted second random number to the device during the poll or a next transmission of the poll, and controlling the device encryption unit to encrypt or decrypt information to be communicated with the device using the first random number acquired by the random number acquisition unit and the second random number.