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Secured QKD

what is QKD ?

QKD is a mean to generate a same random code on two seperate devices

How does it work

- two entangled photons are sent to the devices .

-The polarisation of the two phtons is not decided in the directions  in which they will be read, until they  reach the devices.

-Upon their arrival , the polafrisation gets randomly decided. The two photons being entangled, the polarsation in which they are read by the two devices is nontheless complimentary.

- a same  random code is therefore generated on the two devices


- then the two parties exchange an e-signature of the recveived codes.


Why does it need e-signing

the party receiving the random code needs to make sure that the same code has also been received by the other party, and not by another party that it does not know. 


How can we secure QKD ?

Quantum computers can recompute the keys of clasical signatures

for instance by sending a key to one of the parties and examinig the  signature 

by using our random Hash signatures, this is not possible anymore

because our random hash signatures use One Time Keys.


Will the system run out of One Time Keys

no because the system can use the keys it generates

and the size of the keys used for the e-signature is a lot smaller than  the size of the generated keys

patent US20200351100A1

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  • Quantum Safe Hash
  • Secured OTK
  • Secured QKD
  • Entangled Photons trans
  • Indoor GPS
  • Spying protection

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