« Distribution quantique des clés » : différence entre les versions


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==en construction==
== Définition ==
== Définition ==
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La science de l'exploitation des propriétés [[mécanique quantique|mécaniques quantiques]] pour effectuer des tâches cryptographiques.


== Français ==
== Français ==
''' XXXXXXXXX '''
'''distribution quantique des clés'''


== Anglais ==
'''cryptographie quantique'''
''' Quantum key distribution'''


QKD involves sending encrypted data as classical bits over networks, while the keys to decrypt the information are encoded and transmitted in a quantum state using qubits.
'''chiffrement quantique'''


Various approaches, or protocols, have been developed for implementing QKD. A widely used one known as BB84 works like this. Imagine two people, Alice and Bob. Alice wants to send data securely to Bob. To do so, she creates an encryption key in the form of qubits whose polarization states represent the individual bit values of the key.
== Anglais ==
 
'''quantum key distribution'''
The qubits can be sent to Bob through a fiber-optic cable. By comparing measurements of the state of a fraction of these qubits—a process known as “key sifting”—Alice and Bob can establish that they hold the same key.


As the qubits travel to their destination, the fragile quantum state of some of them will collapse because of decoherence. To account for this, Alice and Bob next run through a process known as “key distillation,” which involves calculating whether the error rate is high enough to suggest that a hacker has tried to intercept the key.
'''QKD'''


If it is, they ditch the suspect key and keep generating new ones until they are confident that they share a secure key. Alice can then use hers to encrypt data and send it in classical bits to Bob, who uses his key to decode the information.
'''quantum encryption'''


'''quantum cryptography '''


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[https://www.technologyreview.com/2019/02/14/103409/what-is-quantum-communications/  Source : technologyreview]


[https://www.technologyreview.com/2019/02/14/103409/what-is-quantum-communications/  Source : technologyreview]
[https://www.btb.termiumplus.gc.ca/tpv2alpha/alpha-fra.html?lang=fra&i=1&srchtxt=Quantum+key+distribution&codom2nd_wet=1#resultrecs  Source : TERMIUM Plus ]  


[[Catégorie:Quantique]]
[[Catégorie:Quantique]]
[[Catégorie:vocabulary]]
[[Catégorie:vocabulary]]

Version du 16 février 2022 à 16:06

Définition

La science de l'exploitation des propriétés mécaniques quantiques pour effectuer des tâches cryptographiques.

Français

distribution quantique des clés

cryptographie quantique

chiffrement quantique

Anglais

quantum key distribution

QKD

quantum encryption

quantum cryptography

Source : technologyreview

Source : TERMIUM Plus

Récupérée de « https://datafranca.org/wiki/index.php?title=Distribution_quantique_des_clés&oldid=60042 »

Contributeurs: Claire Gorjux, Marie Alfaro, wiki