Method and device for generating a secret key
AssigneeRobert Bosch GmbH
InventorAndreas Mueller
Life of this patent
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Abstract
In a method for generating a secret key, a first node which is connected via a transmission channel to a second node estimates a variability of the transmission channel with regard to at least one physical channel parameter of the transmission channel, selects a sampling rate for the channel parameter as a function of the variability, generates a bit sequence by sampling the channel parameter at the selected sampling rate, and adjusts the bit sequence with the second node.
Claims9
A method for generating a secret key, comprising:
- estimating, by a first node which is connected via a transmission channel to a second node, a variability of the transmission channel with regard to at least one physical channel parameter of the transmission channel;
- selecting, by the first node, a sampling rate for the channel parameter as a function of the estimated variability;
- generating, by the first node, a bit sequence by sampling the channel parameter at the selected sampling rate;
- and
- adjusting, by the first node, the bit sequence between the first and second nodes.
A system for generating a secret key, comprising:
- at least one controller including a processor configured to:
- estimate a variability of a transmission channel connecting a first node to a second node with regard to at least one physical channel parameter of the transmission channel;
- select a sampling rate for the channel parameter as a function of the variability;
- generate a bit sequence by sampling the channel parameter at the selected sampling rate;
- and
- adjust the bit sequence between the first node and the second node.
A non-transitory, computer-readable memory medium storing a computer program having program codes which, when executed on a computer, perform a method for generating a secret key, the method comprising:
- estimating a variability of a transmission channel connecting a first node to a second node with regard to at least one physical channel parameter of the transmission channel;
- selecting a sampling rate for the channel parameter as a function of the variability;
- generating a bit sequence by sampling the channel parameter at the selected sampling rate;
- and
- adjusting the bit sequence between the first node and the second node.
Dependencies are inferred from the claim text.