INTEGRATED DATA TRANSCEIVER AND SENSOR FOR THE GENERATION OF A SYMMETRICAL CRYPTOGRAPHIC KEY

• US 20090046860A1
• Filed: 08/17/2007
• Published: 02/19/2009
• Est. Priority Date: 08/17/2007
• Status: Active Grant

• Current Assignee: Infineon Technologies AG
• Original Assignee: Infineon Technologies AG
• Inventors: LENTSCH, Thomas, BICHLER, Daniel, STROMBERG, Guido, LOEW, Manuel, KROGMANN, Martin, BARISIC, Daniel
• Granted Patent: US 8,275,123 B2
• Time in Patent Office: Days
• US Class Current: 380/270
• CPC Class Codes: H04L 2209/805 Lightweight hardware, e.g. radio-frequency identification [RFID] or sensor
• CPC Class Codes: H04L 9/0872 using geo-location information, e.g. location data, time, relative position or proximity to other entities

Abstract

Systems for exchanging encrypted data communications between devices. A system can comprise a first device and a second device. The first device can comprise a first sensor adapted to create a first data profile based at least in part on a sensed condition, and a first transceiver integrated with the first sensor and adapted to generate a first cryptographic key from the first data profile. The second device can comprise a second sensor adapted to create a second data profile based at least in part on the sensed condition, the second data profile being substantially similar to the first data profile, and a second transceiver integrated with the second sensor and adapted to generate a second cryptographic key from the second data profile, the first and second cryptographic keys comprising a set of identical cryptographic keys.

Claims

1. A system for exchanging encrypted data communications comprising:

a first device comprising

a first sensor adapted to create a first data profile based at least in part on a sensed condition, and

a first transceiver integrated with the first sensor and adapted to generate a first cryptographic key from the first data profile; and

a second device comprising

a second sensor adapted to create a second data profile based at least in part on the sensed condition, the second data profile being substantially similar to the first data profile, and

a second transceiver integrated with the second sensor and adapted to generate a second cryptographic key from the second data profile, the first and second cryptographic keys comprising a set of identical cryptographic keys.

2. The system of claim 1, wherein at least one of the first sensor and the second sensor comprises an acceleration sensor.

3. The system of claim 2, wherein the acceleration sensor comprises a multidimensional acceleration sensor.

4. The system of claim 2, wherein the sensed condition comprises a physical stimulus applied to the first and second devices.

5. The system of claim 4, wherein the first device further comprises first coupling means, and wherein the second device further comprises second coupling means, the first and second coupling means adapted to removably and selectively couple the first and second devices.

6. The system of claim 2, wherein the first and second data profiles respectively comprise first and second acceleration profiles.

7. The system of claim 6, wherein each of the first and second acceleration profiles comprise about 200 to about 100,000 individual data points.

8. The system of claim 7, wherein each of the first and second acceleration profiles comprises about 1,000 individual data points.

9. The system of claim 1, wherein each of the first sensor and the second sensor is selected from the group consisting of an acceleration sensor, acoustic sensor, an infrared sensor, an ultrasonic sensor, and a thermal sensor.

10. The system of claim 1, wherein the first and second transceivers are further adapted to symmetrically encrypt and decrypt data using the set of identical cryptographic keys.

11. The system of claim 1, further comprising a mobile vehicle, wherein the first and second devices are movable with the vehicle.

12. The system of claim 11, wherein at least one of the first and second sensors comprises an acceleration sensor, and wherein the sensed condition is a movement of the vehicle.

13. The system of claim 11, wherein at least one of the first and second sensors comprises an acoustic sensor.

14. The system of claim 1, wherein the first device comprises one of a wireless headset or headphones, and wherein the second device is selected from the group consisting of a mobile phone, a personal digital assistant (PDA), a music player, and a game system.

15. The system of claim 1, further comprising a personal area network (PAN), wherein each of the first and second devices are configured to communicate with the PAN.

16. An integrated circuit comprising:

a sensor adapted to generate an electrical signal from a sensed condition; and

a transceiver comprising cryptographic key generation circuitry adapted to generate a cryptographic key from the electrical signal, the transceiver adapted to use the cryptographic key for symmetric encryption or decryption of data communications sent or received by the transceiver.

17. The integrated circuit of claim 16, wherein the sensor comprises an acceleration sensor.

18. The integrated circuit of claim 17, wherein the acceleration sensor comprises a multidimensional acceleration sensor.

19. The integrated circuit of claim 17, wherein the sensed condition comprises a physical stimulus.

20. The integrated circuit of claim 16, wherein the sensor comprises one of an acoustic sensor, an infrared sensor, an ultrasonic sensor, and a thermal sensor.

21. The integrated circuit of claim 16, wherein the electrical signal comprises a data profile.

22. The integrated circuit of claim 21, wherein the data profile comprises about 200 to about 100,000 individual data points.

23. The integrated circuit of claim 22, wherein the data profile comprises about 1,000 individual data points.

24. The integrated circuit of claim 16, wherein the transceiver comprises memory adapted to store the cryptographic key.

25. The integrated circuit of claim 24, wherein the memory is adapted to store the acceleration profile.

26-33. -33. (canceled)

34. A system for transmitting and receiving data comprising:

a first device comprising

a first sensor adapted to create a first profile from a sensed physical event, and

a transmitter integrated with the first sensor, the first transmitter adapted to generate a first cryptographic key from the first profile, to create encrypted data using the first cryptographic key, and to transmit the encrypted data; and

a second device comprising

a second sensor adapted to create a second profile from a sensed physical event, the second profile being substantially similar to the first profile, and

a receiver integrated with the second sensor and adapted to generate a second cryptographic key from the second profile, to receive the encrypted data transmitted by the transmitter, and to use the second cryptographic key to decrypt the encrypted data, the first and second cryptographic keys comprising a set of identical cryptographic keys.

35. The system of claim 34, wherein the first device further comprises a receiver and the second device further comprises a transmitter.

36. The system of claim 35, wherein the receiver of the first device is integrated with the transmitter and first sensor of the first device and is adapted to receive encrypted data and to decrypt encrypted data using the first cryptographic key, and wherein the transmitter of the second device is integrated with the receiver and second sensor of the second device and is adapted to create encrypted data using the second cryptographic key and to transmit the encrypted data.

37. The system of claim 34, wherein each of the first sensor and the second sensor is selected from the group consisting of an acceleration sensor, acoustic sensor, an infrared sensor, an ultrasonic sensor, and a thermal sensor.

38. (canceled)

39. (canceled)