Why CIOs must pivot to post-quantum cryptography now

The digital bedrock of the modern enterprise—the encryption that secures every financial transaction, medical record, and state secret—is approaching an expiration date. While the arrival of a cryptographically relevant quantum computer (CRQC) remains uncertain, the threat it poses is already present. For today’s CIO, post-quantum cryptography (PQC) is no longer a futuristic research project; it is a critical pillar of contemporary risk management and infrastructure resilience.

The urgency is underscored by the fact that the National Institute of Standards and Technology (NIST) has already finalized PQC standards and directed organizations to begin migrating now, with widely used encryption algorithms such as RSA and ECC scheduled for deprecation by 2030 and removal from NIST standards by 2035.

The looming Y2Q moment

To understand the urgency, we need to understand the vulnerability. Most of today’s public-key infrastructure (PKI) relies on mathematical problems—specifically integer factorization (RSA) and discrete logarithms (elliptic curve cryptography)—that are practically impossible for classical computers to solve.

However, Shor’s Algorithm, a quantum algorithm developed in 1994, proves that a sufficiently powerful quantum computer could crack these codes in hours, if not minutes. This isn’t just a theoretical vulnerability; it’s a systemic risk to the global economy.