Security apparatus and method during BLUETOOTH pairing

Details Security apparatus and method during BLUETOOTH pairing Security apparatus and method during BLUETOOTH pairing

2007-02-06

2007-02-06

Nguyen, Duc (Department: 2617)

Telecommunications

Transmitter and receiver at separate stations

Short range rf communication

C455S411000, C713S300000

Reexamination Certificate

active

09949673

ABSTRACT:
A BLUETOOTH device is provided wherein the output RF transmission power level during pairing is purposefully reduced from otherwise conventional or normal communication levels to a low power level, greatly reducing the range of possible interception. Security can be improved even more by further reducing the transmit power even below that defined for a class 2 radio to an extremely low power level. After the link keys have been passed and/or other pairing processes, the BLUETOOTH devices may safely return to normal power levels to continue communications. In an alternative embodiment, a BLUETOOTH device may be required to transmit data keys (e.g., a link key) and/or other pairing operations over a temporary wired connection (or temporary line-of-sight or near line-of-sight connection such as infrared) to another BLUETOOTH device.

REFERENCES:
patent: 6148205 (2000-11-01), Cotton
patent: 6775558 (2004-08-01), Ranta et al.
patent: 6928295 (2005-08-01), Olson et al.
patent: 2001/0051530 (2001-12-01), Shiotsu et al.
patent: 2002/0025042 (2002-02-01), Saito

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