Method and device for generating a secret key
AssigneeRobert Bosch GmbH
InventorsRene Guillaume, Christopher Huth
Life of this patent
Estimating the term…
Abstract
A method for generating a secret key via a reciprocal communication channel connecting a first communication node and a second communication node, wherein the first communication node obtains a first sample by a measurement of the communication channel, the first communication node performs a quantization of the first sample, the first communication node performs a matching of the quantized sample with the second communication node via the communication channel, during the matching, the first communication node obtains and quantizes a second sample by a second measurement of the communication channel and the communication nodes obtain the key from the samples by a privacy amplification.
Claims9
A method for generating a secret key via a reciprocal communication channel connecting a first communication node and a second communication node, the method comprising:
- obtaining, by the first communication node, a first sample by a measurement of the communication channel;
- performing, by the first communication node, a quantization of the first sample;
- performing, by the first communication node, a matching of the quantized sample with the second communication node via the communication channel;
- obtaining and quantizing, by the first communication node, a second sample, during the matching, by a second measurement of the communication channel;
- and
- obtaining, by the communication nodes, the key from the samples by a privacy amplification.
A machine-readable storage medium storing a computer program for generating a secret key via a reciprocal communication channel connecting a first communication node and a second communication node, the computer program, when executed by a processor, causing the processor to perform:
- obtaining, by the first communication node, a first sample by a measurement of the communication channel;
- performing, by the first communication node, a quantization of the first sample;
- performing, by the first communication node, a matching of the quantized sample with the second communication node via the communication channel;
- obtaining and quantizing, by the first communication node, a second sample, during the matching, by a second measurement of the communication channel;
- and
- obtaining the key from the samples by a privacy amplification.
A device configured to generate a secret key via a reciprocal communication channel connecting a first communication node and a second communication node, the device configured to:
- obtain a first sample by a measurement of the communication channel;
- perform a quantization of the first sample;
- perform a matching of the quantized sample with the second communication node via the communication channel;
- obtain and quantize a second sample, during the matching, by a second measurement of the communication channel;
- and
- obtain the key from the samples by a privacy amplification.
Dependencies are inferred from the claim text.