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World Congress 2026 Europe • Jul 9, 2026 • Session details

Post-Quantum Cryptography: Preparing for Q-Day

Tim Schade

Malicious actors are already harvesting your encrypted traffic to decrypt on Q-Day. Learn how to deploy lattice-based ML-KEM and hybrid TLS today to future-proof your infrastructure.

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#1 about 2 min

Understanding Q-Day and quantum computing threats

Quantum computers pose a theoretical threat to classical cryptography systems due to exponential computation speedups.

#2 about 2 min

Getting servers ready for post-quantum cryptography today

Servers and web browsers can be upgraded today to use post-quantum algorithms like ML-KEM.

#3 about 5 min

Classical cryptography and trapdoor mathematical functions

Classical encryption relies on the specific mathematical foundations of trapdoor functions and discrete logarithms.

#4 about 9 min

Physics of quantum mechanics with superposition and entanglement

The double-slit experiment reveals how matter behaves as both measurable waves and discrete particles.

#5 about 3 min

Translating physical quantum concepts to computer science

Qubits process information using superposition probabilities and quantum logical gates to handle multiple states simultaneously.

#6 about 3 min

Breaking classical encryption using Shor's algorithm computation

Quantum parallelism and Fourier transformation allow mathematical factoring of prime numbers to bypass RSA encryption.

#7 about 6 min

Lattice-based cryptography mechanics and the ML-KEM standard

Module lattice-based cryptography relies on the difficulty of solving the closest vector problem to secure keys.

#8 about 3 min

Current readiness and modern migration security challenges

Hybrid classical-quantum encryption is progressing in browsers despite compatibility issues for distributed public key infrastructure.

#9 about 2 min

Key sizes and the classic McEliece algorithm

Post-quantum tools require network trade-offs with larger public key sizes compared to classical options.

Matching moments

2:17 min

Preparing for quantum resilience and post-quantum cryptography

Jakub Gaj Jakub Gaj · World Congress 2026 Europe

3:36 min

Building quantum networks and mitigating future cryptographic vulnerabilities

John Fletcher John Fletcher +1 · World Congress 2026 Europe

2:56 min

Preparing systems with post-quantum cryptography migration strategies

Julian Julian · World Congress 2025

2:41 min

Addressing the critical ethical implications of quantum optimization capabilities

Alexander Wallner Alexander Wallner +3 · World Congress 2024

1:52 min

Preparing blockchain protocols for quantum computing threats

Brian Whippo Brian Whippo · Coffee With Developers

2:38 min

Preparing internet infrastructure for post-quantum cryptography challenges

Gerhard Eschelbeck Gerhard Eschelbeck +1 · World Congress 2026 North America

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