From Hype to Reality: Preparing Your Business for the Post-Quantum Era

For years, quantum computing has existed primarily in the realm of theoretical physics and science fiction. However, we are rapidly approaching a technological inflexion point. Unlike classical computers, which solve problems in a binary fashion using ones and zeros, quantum computers leverage the principles of quantum mechanics—specifically, qubits and superposition. This allows them to explore many possibilities simultaneously, solving multi-variable problems that would take classical supercomputers thousands of years to complete.

The potential benefits are staggering. Quantum computing promises to revolutionize industries by optimizing supply chains, enhancing artificial intelligence, improving weather prediction models, and accelerating drug discovery. However, this immense power comes with a significant risk: the ability to break the encryption standards that currently secure the digital world.

The Market is at an Inflection Point

If you think "Q-Day"—the day quantum computers can break classical encryption—is decades away, the market disagrees. We have seen an explosion in revenue estimates for quantum computing companies, with projections showing massive year-over-year growth. Furthermore, major hardware advancements are occurring rapidly as researchers improve qubit stability and error correction. As further proof of this acceleration, the ETF QTUM has risen by more than 50% in the past twelve months. This market movement signals a strong belief that practical quantum utility is arriving much faster than previously anticipated.

What This Means for Cryptography

The arrival of a sufficiently powerful quantum computer poses an existential threat to the Public Key Infrastructure (PKI) we rely on today. Specifically, quantum computers will be able to run Shor’s algorithm, which effectively breaks the mathematics behind asymmetric cryptography, such as RSA and Elliptic Curve Cryptography (ECC). Once broken, an attacker could reproduce a private key from a public key, allowing them to forge digital signatures, impersonate endpoints, or access sensitive communications.
 

While symmetric encryption (like AES) is less vulnerable and can largely be protected by increasing key lengths, the mechanisms used to transport those keys, such as TLS/SSL, will be vulnerable.

The most pressing danger, however, is the "Harvest Now, Decrypt Later" threat. Adversaries are already collecting encrypted data—intellectual property, state secrets, and long-life financial records—with the intention of decrypting it once quantum technology matures. This means that for many industries, the data you lost in a breach or captured during transmission is already at risk.
 

A similar danger is known as “Trust Now, Forge Later,” whereby solutions that establish trust using digital certificates underpinned by classical RSA or EC digital signatures can no longer be trusted. Quantum Computing will be able to recreate the private keys for these certificates and create seemingly legitimate signatures for forged or compromised data and devices.

The New NIST Standards

To combat this, the industry has been working toward a solution for nearly a decade. The National Institute of Standards and Technology (NIST) has been leading a standardization effort since 2016 to select post-quantum cryptography (PQC) algorithms.
 

We now have the first finalized standards. These include FIPS 203 (a lattice-based key encapsulation mechanism for encryption), FIPS 204 (for digital signatures), and FIPS 205 (a stateless hash-based signature scheme for archival purposes). A fourth standard, FIPS 206 (Falcon), is expected soon. These algorithms are critical because they provide standardized alternatives to classical approaches, enabling vendors and organizations to begin migrating their systems to become quantum-resistant.

Now What? How to Prepare

The most important takeaway is that doing nothing is the worst possible strategy. Migration will be complex and time-consuming, potentially taking years for legacy applications. Based on expert insights, here is a high-level roadmap for preparation:

1. Discover: You cannot protect what you do not know. Start by creating a comprehensive inventory of your cryptographic assets. Identify where keys and certificates are used, which algorithms are in place, and what data they protect.

2. Prioritize: Not all data is equal. Focus on your most sensitive information, particularly data with a long shelf life (such as health records or trade secrets) that would be vulnerable to "Harvest Now, Decrypt Later" attacks.

3. Research and Plan: Engage with your vendors. Ask about their PQC roadmaps and when they will support the new NIST standards.

4. Build Crypto Agility: Hard-coded cryptography is a liability. You must implement "crypto agility," ensuring that your systems can easily update cryptographic protocols without requiring a complete infrastructure overhaul.

For more information on how your peers are preparing for the eventual Q-Day, I recommend reading the blog, How Organizations Are Preparing for Post Quantum Cryptography.  This blog summarizes the responses from the 2025 Utimaco PQC Readiness Survey and directs readers to the full report.

Watch the recording of our joint session with Ascertia “From Hype to Readiness: What Post-Quantum Security Really Means for Businesses”

Conclusion

The quantum era is coming, and the time to build your post quantum crypto (PQC) strategy is now. You do not have to navigate this transition alone. Industry leaders like Utimaco and Ascertia have already developed the expertise, simulators, and discovery tools necessary to help you plan your migration and build a PQC-ready strategy.

To dive deeper into these steps and hear directly from the experts about separating hype from reality on this topic, I strongly encourage you to watch this recent webinar, From Hype to Reality: Preparing Your Business for the Post-Quantum Era. During the webinar, I interviewed a panel of technology experts from Utimaco and Ascertia, who shared their decades of experience and pragmatic recommendations for PQC preparation.
 

About the Author

Charles Goldberg

Cybersecurity Marketing Consultant