Post-Quantum Cryptography: Transition to Quantum Resilience Now
Post-Quantum Cryptography: How Companies Can Protect Themselves Now
Quantum computers challenge traditional encryption methods such as RSA, ECC, or DSA. Many of today’s standard algorithms could be broken by quantum machines within a few years. The solution: Post-Quantum Cryptography (PQC) – quantum-secure algorithms designed to withstand future quantum attacks.
We take a closer look at this topic in our Cybersecurity Academy as part of Cybersecurity Awareness Month.
What is Post-Quantum Cryptography (PQC)?
PQC describes a new generation of encryption algorithms specifically developed to withstand mathematical attacks by quantum computers. The goal is to replace proven algorithms such as RSA, ECC, or Diffie-Hellman with quantum-resistant alternatives like Kyber or Dilithium.
Relevant actors and standards:
- NIST: Leading the standardization of PQC algorithms (e.g., Kyber, Dilithium, SPHINCS+)
- BSI: Provides recommendations for PQC readiness for German enterprises
- EU / DORA: Require quantum-secure cryptography for regulated companies in finance, energy, and infrastructure sectors
Why Transition to PQC Now – Not Later
The risks are real – and growing with each quantum computing breakthrough:
- Harvest now, decrypt later: Attackers are storing encrypted data today to decrypt it later with quantum computers
- Long-term migration needs: PQC transition impacts systems, keys, certificates, applications – a multi-year undertaking
- Regulatory pressure: Frameworks such as DORA, NIS2, or the BSI IT Baseline Protection Compendium demand robust cryptographic transitions
Conclusion: Those who wait until quantum computers reach market maturity will already be too late.
eperi QuantumEdge: Strategically Address PQC Readiness Now
QuantumEdge is the specialized extension module of the eperi® sEcure platform. It helps companies implement quantum-secure encryption in a controlled, compliant, and technically seamless manner.
| Function | Description |
|---|---|
| Cryptography Scan | Analysis of all deployed encryption methods |
| Shadow IT Detection | Identification of insecure systems and outdated algorithms |
| Hybrid TLS Encryption | Parallel use of classical and PQC-based algorithms |
| PQC Dashboard | Overview of systems, endpoints, and migration status |
| Policy Engine | Rule-based management of PQC rollout |
| Infrastructure Integration | Compatible with KMS, certificate, and identity systems |
Migration Without Disruption
QuantumEdge enables a hybrid migration path – PQC algorithms are introduced in parallel with classical methods. Critical systems can be prioritized, while non-critical components are transitioned step by step. This ensures availability and functionality of the IT landscape at all times.
Benefits of QuantumEdge at a Glance
- Future-proof cryptography against quantum attacks
- Full transparency on cryptographic risks and vulnerabilities
- Regulatory compliance with NIST, BSI, and EU frameworks (DORA, NIS2)
- Easy integration into existing infrastructure
- Strategically controlled PQC roadmap including audit readiness
FAQ: Frequently Asked Questions on Post-Quantum Cryptography
Is PQC already mandatory?
Not across the board. However, DORA, BSI, and NIS2 already require concrete measures from critical infrastructure and financial organizations.
Why is hybrid encryption sufficient for now?
It enables parallel operation of classical and PQC algorithms – ideal for risk-based migration strategies without loss of functionality.
How long does a PQC transition take?
Depending on the system landscape, several years. The earlier companies begin, the better they can meet regulatory deadlines.
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