TL;DR: Quantum computers will soon break today’s RSA and ECC encryption, and regulators now demand migration timelines, making quantum-safe encryption a fiduciary and compliance issue, not just an IT project. Boards must fund and govern the transition to post-quantum cryptography (PQC) now to avoid data exposure, audit findings, and competitive disadvantage.
The Threat Is No Longer Theoretical
NIST finalized its first post-quantum standards in August 2024: ML-KEM (FIPS 203), ML-DSA (FIPS 204), and SLH-DSA (FIPS 205), with HQC selected as a backup KEM in March 2025. These algorithms replace RSA and elliptic-curve cryptography, which Shor’s algorithm can defeat once a cryptographically relevant quantum computer arrives. The more immediate danger is “harvest now, decrypt later”: adversaries are already capturing encrypted traffic to decrypt once quantum hardware matures.
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Specs and Industry Impact
ML-KEM uses lattice-based module learning-with-errors for key encapsulation; ML-DSA provides digital signatures with relatively small keys and fast verification. Hybrid deployments—classical plus PQC—are the recommended near-term path to preserve interoperability. Cloud providers, browsers, and messaging apps have begun shipping hybrid key exchange, and the NSA’s CNSA 2.0 suite mandates PQC for national security systems by 2030–2033. Financial regulators, including the EU’s DORA and U.S. banking agencies, increasingly expect documented crypto-agility and migration plans. For boards, this means budgeting for inventory of cryptographic assets, vendor contract updates, hardware security module firmware upgrades, and staff training—typically a multi-year, cross-functional program.
FAQ
Q: When will quantum computers actually break RSA?
A: Estimates vary from the early 2030s to later, but migration takes years, so preparation must start now.
Q: Do we need to replace all encryption immediately?
A: No—prioritize long-lived sensitive data and hybrid PQC deployments, then phase in full migration.
Q: What is the board’s specific responsibility?
A: Approve funding, assign executive ownership, and track migration milestones as a risk and compliance matter.
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