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Quantum Futures

Quantum computing has the potential to break today's widely used encryption schemes (such as RSA or ECC) within seconds. Even though powerful quantum computers are still years away, organisations must act now: Post-Quantum Cryptography (PQC) is the answer to this existential threat.

We follow the principle of Crypto-Agility — the ability to swap cryptographic schemes quickly and seamlessly as new standards become available.

Anti-Patterns: Harvest now, decrypt later

Attackers are already collecting encrypted, highly sensitive data (e.g. state secrets, patient records, intellectual property), expecting to decrypt it in 5–10 years using quantum computers. Since this data often needs to remain confidential for decades, the threat is already real today.

Quantum-Safe Architecture

  1. Post-Quantum Cryptography (PQC): Migration to new mathematical schemes (e.g. lattice-based cryptography) that, to the best of current knowledge, cannot be broken even by quantum computers.
  2. Cryptographic Inventory: Comprehensive documentation of all encryption schemes, certificates, and keys in use across the organisation.
  3. Crypto-Agility: Design software architecture so that cryptographic algorithms can be swapped via configuration (rather than being hard-coded).
  4. Hybrid Encryption: Combining classical schemes with PQC schemes for maximum security during the transition phase.
  5. Quantum Key Distribution (QKD): Using physical quantum effects for absolutely secure key transmission (for highly specialised applications).

The Focus: Long-Term Data Protection

Quantum resilience is the insurance policy for data that must remain confidential 20 years from now.

FAQ

Do we really need to deal with quantum computers right now?

Yes, if your data has a shelf life of more than 5 years. Preparing infrastructure for PQC often takes years — we need to lay the groundwork today.

Are there already standardised PQC schemes?

Yes. The US-based NIST has already announced the first winners of the PQC standardisation process (e.g. Kyber, Dilithium). We can begin integrating these into your architectures.

Reference Guide

  • NIST Post-Quantum Cryptography: The global standardisation process. nist.gov
  • BSI — Quantum Computers and PQC: Information from the German Federal Office for Information Security. bsi.bund.de
  • Cloudflare PQC Blog: Practical insights on deploying quantum-safe protocols on the internet. cloudflare.com

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