建立信任——在创建新的网络服务中兼顾质量和易用性——量子安全城域网.pdf

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1、OCP EMEA Summit 29 April|Dublin,IrelandCatherine White,BTEstablishing Trust,Quality and Ease-of-Use in Creating New Network Services The Quantum Secured Metro NetworkINSECURE EXTERNAL NETWORKUltra Secure Key Exchange-Quantum Key DistributionUltra-secure key distribution on single photons using quant

2、um mechanics.QKD systems readiness at high TRL(Industrialisation,Assurance,Performance)EncryptorEncryptorSensitive DataSensitive DataDigital key derived from informationencoded on single photons-Guarantee of secrecyQuantum Key DistributionQuantum Key DistributionQUANTUM KEYCHANNELEncrypted DataSite

3、ASite BWhy Quantum Key Distribution(QKD)?oQuantum key distribution is secure against all advances in computation,including quantum computers.oQuantum Key Distribution is approaching readiness for an increasing number of use-cases,with published standards,and progress towards photonic integrated circ

4、uit QKD systems.oAdvances in Quantum Computing research pose a risk to existing cryptography.oPost Quantum Cryptography such as ML-KEM for key exchange is still limited to computational security.oChallenge 1:we need to integrate QKD into existing networks.oChallenge 2:we need cryptographers and CISO

5、/CTOs to select QKDoChallenge 3:we need to demonstrate the technology is ready oChallenge 4:we need to evolve the technology,especially for long linksIn unconditional security,there are no assumptions of computational hardness.A misnomer,as nothing is perfectly secure.(side channels,implementation f

6、laws)It means no advance in maths,computation or algorithms can lead to a vulnerabilityA similar concept/term is:information theoretic securityUnconditional Security5CryptomaniaTHE INTERNET DEPENDS ON ITAssumes trap door functions existAsymmetric(public/private key pair)cryptography is possiblePessi