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US 12,757,014 B2Granted
Physical layer security
AssigneeQDAComm LLC
InventorsJohn O'Brien, Paulo Carvalho, Rui Dinis
Life of this patent
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Abstract
Systems and methods of performing physical layer security are presented. In one exemplary embodiment, an electronic device includes a set of amplifier circuitry operable to output a set of output signals that collectively represents an amplified sample of an input signal having information. Further, the set of output signals corresponds to a set of bandpass components that is secured by a certain physical layer security scheme and is associated with a quantized polar representation of the input signal sample.
Claims20
A method, comprising:
- by an electronic device,
- processing a digital representation of an input signal having information to generate a set of signal features;
- applying a physical layer transformation to the digital representation of the input signal to obtain a transformed signal;
- deriving a secure key based on one or more local conditions internal to the electronic device and the set of signal features, wherein the set of signal features includes a quantized amplitude value of a polar representation of the input signal with the quantized amplitude value being selected from the polar representation of the input signal and applied as a signal feature for deriving the secure key;
- and
- outputting an output signal that represents the transformed signal.
3 more elements
An electronic device, comprising:
- a signal processor circuitry configured to obtain a set of signal features from a digital representation of an input signal having information;
- a transform circuitry configured to apply a physical layer transformation to the digital representation of the input signal to obtain a transformed signal;
- a key generation circuitry configured to derive a secure key from one or more local conditions internal to the electronic device and the set of signal features, wherein the set of signal features includes a quantized amplitude value of a polar representation of the input signal with the quantized amplitude value being selected from the polar representation of the input signal and applied as a signal feature for deriving the secure key;
- and
- a transmit circuitry configured to output an output signal that represents the transformed signal.
2 more elements
A system, comprising:
- a first electronic device including:
- a first signal processor circuitry configured to obtain a set of signal features from a digital representation of an input signal having information;
- a transform circuitry configured to apply a physical layer transformation to the digital representation of the input signal to obtain a transformed signal;
- a key generation circuitry configured to derive a secure key from one or more first local conditions internal to the first electronic device and the set of signal features of the input signal, wherein the set of signal features includes a quantized amplitude value of a polar representation of the input signal with the quantized amplitude value being selected from the polar representation of the input signal and applied as a signal feature for deriving the secure key;
- and
- a transmit circuitry configured to output an output signal that represents the transformed signal;
- and
- a second electronic device including:
- a receive circuitry configured to receive the output signal;
- a decode circuitry configured to decode the output signal based on the physical layer transformation to obtain a digital representation of a decoded input signal;
- a second signal processor circuitry configured to obtain a set of signal features from the digital representation of the decoded input signal;
- and
- a key generation circuitry configured to apply a reciprocal transformation corresponding to the physical layer transformation to derive the secure key based on one or more second local conditions internal to the second electronic device that correspond to the one or more first local conditions internal to the first electronic device, and the set of signal features of the decoded input signal.
10 more elements
Dependencies are inferred from the claim text.