# BFM Stratégie (Cours n°353) : Le quantique va-t-il casser Internet ? – 25/10

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Podcast: [BFM Stratégie](https://stenobird.com/podcast/bfm-strat-gie-522146)
Published: 2025-10-25T15:55:14+00:00
Episode link: https://bfmbusiness.bfmtv.com/mediaplayer/podcast/bfm-strategie/
Audio file: https://altice.simplecastaudio.com/1be43123-3ef8-483e-89a3-b069e69ac91e/episodes/21174639-2c94-486b-86b1-ddd5032addb2/audio/128/default.mp3?aid=rss_feed&awCollectionId=1be43123-3ef8-483e-89a3-b069e69ac91e&awEpisodeId=21174639-2c94-486b-86b1-ddd5032addb2&category=Business&episode_published_at=2025-10-25T15%3A55%3A14&episode_title=BFM+Strat%C3%A9gie+%28Cours+n%C2%B0353%29+%3A+Le+quantique+va-t-il+casser+Internet+%3F+%E2%80%93+25%2F10&feed=zYwHp_vU&network=291091218710&podcast_title=BFM+Strat%C3%A9gie
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Duration seconds: 743

## Resource

Quantum computing poses an imminent threat to the RSA encryption protocols that secure global banking and critical infrastructure. This discussion explores the urgent need for 'crypto-agility' and the transition to post-quantum cryptographic standards to prevent large-scale data decryption.

## Highlights
- Main idea: Quantum computers using Shor's algorithm can break the fundamental RSA encryption that has protected the internet for 40 years
- Failure mode: The 'harvest now, decrypt later' strategy allows attackers to steal encrypted data today to decrypt it once quantum technology matures
- Practical takeaway: Organizations must prioritize a cryptographic inventory and implement 'crypto-agility' to allow for rapid algorithm updates
- Main idea: NIST has already identified and standardized robust post-quantum algorithms that are ready for implementation
- Practical takeaway: Businesses should allocate roughly 2.5% to 5% of their IT budget to manage the migration to quantum-resistant protocols

## Topics

Quantum Computing, Cryptography, Cybersecurity, Post-Quantum Cryptography, NIST Standards, Data Privacy, IT Infrastructure, Risk Management

## Chapters
- 1:00 — The Quantum Threat to Infrastructure: An introduction to how quantum computing threatens the confidentiality of banks, exchanges, and critical digital infrastructure.
- 3:00 — How Quantum Breaks Encryption: An explanation of the 'clay' analogy: how quantum algorithms can solve the mathematical problems that underpin current public-key cryptography.
- 5:00 — The Risk of Retrospective Decryption: Discussing the danger of bad actors capturing encrypted data today with the intent to decrypt it in the future.
- 7:00 — The NIST Standards and Implementation: Reviewing the NIST-approved algorithms and the current state of usable post-quantum cryptographic solutions.
- 9:00 — Defining Crypto-Agility: The importance of building systems that can easily swap cryptographic protocols as new mathematical vulnerabilities are discovered.
- 10:00 — Strategic Roadmap for Businesses: A three-step plan for entrepreneurs: inventorying critical systems, prioritizing assets, and executing a migration plan.
- 11:00 — The Transition Challenge: Analyzing the difficulty of migrating legacy software and the necessity of adopting post-quantum labels and standards.

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## Transcript

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