How should an organization prepare for the coming 'Q-Day' and Quantum-Resistant Encryption?

All answers to this question.

Preparation for Q-Day starts with "Crypto-Agility." You need to inventory every application and hardware device that relies on public-key encryption. Focus on your most sensitive long-term data (like health records or trade secrets) because of the "Harvest Now, Decrypt Later" threat. NIST has already selected primary algorithms for the PQC standard, such as CRYSTALS-Kyber for general encryption and CRYSTALS-Dilithium for digital signatures. You should begin evaluating vendors that offer "Hybrid" modes—where data is encrypted with both classical and quantum-resistant algorithms simultaneously. This ensures security today while future-proofing against the quantum threat.

   Answered 2025-03-27 by Dorothy Young

Do you think current hardware (like HSMs and Load Balancers) can handle the significantly larger key sizes required by Post-Quantum algorithms without a massive performance hit?

   Answered 2025-03-29 by Kenneth Hill

• Kenneth, that’s the "million-dollar" engineering challenge. PQC keys and signatures are often 10 to 100 times larger than their RSA counterparts. This will definitely cause latency issues in high-volume environments. We are seeing a move toward hardware-accelerated PQC, where new chips are designed specifically to handle the lattice-based mathematics of these algorithms efficiently. For now, the focus should be on "Selective Encryption"—applying PQC only to the most critical data streams while hardware manufacturers catch up with more efficient processing power.

     Commented 2025-03-30 by Brian Scott

The biggest risk is actually our PKI infrastructure. Updating all those certificates across a global enterprise is going to be a decade-long project. We need to start now.

   Answered 2025-03-31 by Nancy Adams

• Nancy is spot on. The transition to PQC isn't a "patch" you apply overnight; it's a fundamental re-architecture of trust. Starting your inventory today is the only way to avoid a crisis later.

     Commented 2025-04-01 by Kevin Foster