Method and device for generating a secret key
OwnerAndreas MUELLERinventor
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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 measures a sequence of physical channel parameters of the transmission channel within a predefined time window, determines for multiple predefined code words a distance of each code word from the sequence, selects a particular code word from the multiple code words which has the shortest distance from the sequence, and adjusts a bit sequence which is assigned to the selected code word with the second node via the transmission channel.
Claims9
A method for generating a secret key, comprising:
- measuring, by a first node which is connected via a transmission channel to a second node, a sequence of physical channel parameters of the transmission channel within a predefined time window;
- determining, by the first node, for multiple predefined code words a distance of each code word from the sequence;
- selecting, by the first node, from the multiple predefined code words, a code word which has the shortest distance from the sequence;
- and
- adjusting, by at least the first node, a bit sequence which is assigned to the selected code word with the second node via the transmission channel.
A system for generating a secret key, comprising:
- a controller including a processor configured to:
- measure a sequence of physical channel parameters of a transmission channel within a predefined time window;
- determine for multiple predefined code words a distance of each code word from the sequence;
- select from the code words a code word which has the shortest distance from the sequence;
- and
- adjust a bit sequence which is assigned to the selected code word with the second node via the transmission channel.
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:
- measuring a sequence of physical channel parameters of a transmission channel within a predefined time window;
- determining for multiple predefined code words a distance of each code word from the sequence;
- selecting from the multiple predefined code words, a code word which has the shortest distance from the sequence;
- and
- adjusting a bit sequence which is assigned to the selected code word with the second node via the transmission channel.
Dependencies are inferred from the claim text.