POST-QUANTUM CRYPTOGRAPHYMIGRATION
Migrate from classical to post-quantum cryptography with a structured, phased approach. PTG guides organizations through cryptographic inventory, risk prioritization, and production rollout.
The Six-Phase Migration Process
Cryptographic inventory and discovery
Risk prioritization by data sensitivity
Architecture planning and hybrid design
Pilot implementation and testing
Production rollout across systems
Classical algorithm deprecation
Common Migration Challenges
Larger Key and Signature Sizes
PQC algorithms produce larger keys and signatures that may affect bandwidth, storage, and protocol compatibility.
HSM and Hardware Limitations
Existing hardware security modules may not support PQC algorithms and require firmware updates or replacement.
Third-Party Dependencies
Partners, vendors, and SaaS providers must also support PQC for end-to-end protection.
Legacy System Constraints
Older systems may not support hybrid key exchange or larger PQC parameters without significant upgrades.
Frequently Asked Questions
How long does PQC migration take?
Typical migrations take 18 to 36 months from assessment to full deployment. The timeline depends on the size and complexity of your cryptographic footprint.
What is hybrid mode?
Hybrid mode combines classical and post-quantum algorithms simultaneously. This provides backward compatibility while adding quantum-resistant protection. It is the recommended transition approach.
Which PQC standards should we use?
NIST has finalized three PQC standards: ML-KEM (FIPS 203) for key encapsulation, ML-DSA (FIPS 204) for digital signatures, and SLH-DSA (FIPS 205) for hash-based signatures.
Related Services
Assess Your Quantum Risk
Start with a quantum readiness assessment to understand your exposure and build a migration roadmap.