Arrangements for Location-Based Security Systems and Methods Therefor
First Claim
1. A method of generating cryptographic keys from location information derived from a signal received from a publicly-used wireless communication system, the location information being protected from fraudulently generated signals using direction of arrival of the received signal, the method comprising the steps of:
- attempting to verify that the direction of arrival corresponds to an expected direction of arrival for a received signal of the primary signal type; and
in response to the direction of arrival being verified as corresponding to the expected direction of arrival, enabling use of an encryption key that is generated from positional information derived from the received signal.
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Abstract
Aspects are applicable to secure encryption such as in the generation of a cryptographic key from location information as may be useful in portable/wireless communication devices. As an example, one embodiment is implemented as a method of generating cryptographic keys from location information derived from a signal received from a publicly-used wireless communication system. The location information is protected from fraudulently generated signals using direction of arrival of the received signal. The method attempts to verify that the direction of arrival corresponds to an expected direction of arrival for a received signal of the primary signal type, and in response to the direction of arrival being verified for the direction of arrival, and then enables use of an encryption key that is generated from positional information derived from the received signal
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Citations
12 Claims
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1. A method of generating cryptographic keys from location information derived from a signal received from a publicly-used wireless communication system, the location information being protected from fraudulently generated signals using direction of arrival of the received signal, the method comprising the steps of:
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attempting to verify that the direction of arrival corresponds to an expected direction of arrival for a received signal of the primary signal type; and in response to the direction of arrival being verified as corresponding to the expected direction of arrival, enabling use of an encryption key that is generated from positional information derived from the received signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for generating cryptographic keys from location information derived from a signal received from a publicly-used wireless communication system, the location information being protected from fraudulently generated signals using direction of arrival of the received signal, the apparatus comprising:
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first means for attempting to verify that the direction of arrival corresponds to an expected direction of arrival for a received signal of the primary signal type; and second means, responsive to the direction of arrival being verified as corresponding to the expected direction of arrival, for enabling use of an encryption key that is generated from positional information derived from the received signal. - View Dependent Claims (9, 10, 11, 12)
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Specification