Most companies today use encryption to protect sensitive data, such as their clients’ data, financial records, and internal communications. But soon, there will be a big change.
Quantum computers will be able to break common types of encryption and render current security systems useless. Current security systems would be rendered useless by quantum computers capable of breaking encryption. Even though quantum computing is still under development at scale, we are already facing that threat. While companies can store encrypted data using digital encryption, in a few years’ time, they could decrypt it using quantum computing.
That is why the National Institute of Standards and Technology is working to establish post-quantum cryptography (PQC) standards so businesses can be ready to adopt this new form of encryption.
What Is Post-Quantum Cryptography?
Post-quantum cryptography (PQC) is a new form of encryption developed to withstand attacks by quantum computers. Traditional cryptography relies on complex mathematics that can be quickly solved by quantum computers, whereas PQC relies on mathematical algorithms that would remain secure in a quantum computer’s environment.
In simple terms, post-quantum cryptography is a method to ensure the long-term protection of encrypted data.
Types of traditional encryption include:
- RSA (based on simplifying prime numbers into their integers)
- ECC (based on problems related to the elliptic curve)
- Examples of post-quantum cryptography include:
- Lattice-based encryption
- Hash-based signatures/verify
- Code-based encryption
The algorithms and methods for PQC require a quantum computer to spend more time finding ways to decrypt or establish mathematically valid relationships than traditional forms of encryption.
Why Businesses Should Care Now
It’s easy to assume quantum threats are far off, but the risk timeline doesn’t work that way. Data encrypted today could be vulnerable tomorrow.
This is known as the “harvest now, decrypt later” problem.
Key concerns include:
- Long-term sensitive data exposure
- Regulatory risks as standards evolve
- Loss of customer trust in case of future breaches
In industries such as finance, healthcare, and defense, delayed adoption can create serious long-term vulnerabilities.
Why Quantum Computers can violate present encryption
Understanding urgency with quantum computers, modification of the rules.
Every aspect of traditional Encryption relies on problems considered hard for classical computers; however, quantum computers are able to resolve those same issues exponentially quicker due to their algorithmic methodology (i.e., Shor’s Algorithm)
Impact of current systems
- RSA-encrypted systems become breakable.
- ECC-based systems become prone.
- The ability to exchange secure keys becomes reduced.
Therefore, encryption protocols such as HTTPS and VPNs are highly susceptible to compromise.
NIST standardization of post-quantum cryptography
The National Institute of Standards and Technology has assumed global leadership in developing standards for post-quantum Cryptographic Algorithms.
Milestones achieved:
- Selected candidate Algorithms for posting
- Released draft guidelines for use
- Inspiring companies to begin planning on transitioning.
The creation of these standards will provide the basis for all future encryption systems.
Post-Quantum Cryptography Transition Framework
| Assessment | Identify vulnerable systems | Risk visibility |
| Planning | Choose PQC-ready solutions | Strategic alignment |
| Implementation | Upgrade encryption systems | Future-proof security |
| Monitoring | Continuous updates | Long-term resilience |
Key Challenges in Adoption
While the need for PQC is clear, transitioning isn’t simple. Businesses face several technical and operational challenges.
Major barriers include:
- Compatibility issues with existing systems
- Performance impact of new algorithms
- Lack of skilled expertise
- Uncertainty around evolving standards
These challenges make it important to adopt a phased and well-planned approach.
Conclusion
Post-quantum cryptography is not just a technical upgrade—it’s a strategic necessity. Businesses that delay adoption risk exposing sensitive data to future threats, even if their systems appear secure today.
The transition may take years, but the time to start is now. Organizations that prepare early will be better positioned to protect their data, maintain trust, and stay ahead in an evolving threat landscape.
