Apparatus and method for the detection of attacks taking control of the single photon detectors of a quantum cryptography apparatus by randomly changing their efficiency
US9634835B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2011 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Sep 28, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/002
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for revealing both attack attempts performed on the single-photon detector(s) of a quantum cryptography system and Trojan horse attack attempts performed on quantum cryptography apparatus containing at least one single photon detector. The attacks detection relies on both the random modification of the setting parameters of the said single-photon detector(s) and the comparison of the measured detection probability values for each setting parameter with the expected detection probability values. The modified parameter of the single-photon detector can be its efficiency or its timing of activation for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.