ETSI TR 103 617 V1.1.1 Quantum-Safe Virtual Private Networks

Examines what is needed to make virtual private network technologies resistant to quantum attack, covering client, server and architectural aspects with a focus on protocols and key establishment. The report explains that RSA and elliptic-curve cryptography rely on problems a quantum computer could solve efficiently, notes the immediate risk of traffic being recorded now and decrypted later, and argues VPN systems need updating before such machines exist.

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