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Theses

Sécurité pratique de systèmes de cryptographie quantique : étude d'attaques et développement de contre-mesures

Abstract : In this thesis, I study a cryptographic primitive called quantum key distribution which allows two remote parties to share a secret key, in the presence of an eavesdropper, whose power is only limited by the laws of quantum physics. I focus my study on the implementation and the practical security of continuousvariable protocols. For the first time, I have proposed and studied a detector-based side channel attack on a continuous-variable system : saturation attack. This attack opens a new security loophole that we have characterized experimentally in our laboratory, on a real continuous-variable system. Finally, we have demonstrated experimentally for the first time the feasibility of a continuous-variable system deployment in a Dense Wavelength Division Multiplexing network, where quantum signals coexist with intense classical signals in a same fiber
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  • HAL Id : tel-03173681, version 1

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Hao Qin. Sécurité pratique de systèmes de cryptographie quantique : étude d'attaques et développement de contre-mesures. Cryptographie et sécurité [cs.CR]. Télécom ParisTech, 2015. Français. ⟨NNT : 2015ENST0040⟩. ⟨tel-03173681⟩

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