Preparing for the quantum era with post-quantum cryptography

However, this advance poses a critical challenge: current encryption technologies—which protect everything from banking transactions to medical records—could become obsolete in the face of the power of quantum computing.

This is where Post-Quantum Cryptography (PQC) emerges as the new security standard in the digital age.

Why does the quantum era threaten current security?

The most widely used encryption algorithms today—such as RSA, ECC (Elliptic Curve Cryptography), and Diffie-Hellman—are based on complex mathematical problems, such as the factorization of large numbers. These calculations are virtually impossible to solve with classical computers in a reasonable amount of time.

But quantum computing changes the landscape:

• Shor's algorithm, proposed in 1994, showed that a sufficiently powerful quantum computer could break RSA and ECC in a matter of hours or minutes.

• According to a report by DigiCert (2023), 65% of global organizations believe that quantum computing will pose a critical threat to data security in less than 10 years.

This means that information encrypted today could be at risk tomorrow, especially with “harvest now, decrypt later” practices, where attackers store encrypted data waiting for the day when quantum technology makes it vulnerable.

What is Post-Quantum Cryptography (PQC)?

PQC refers to a set of encryption algorithms designed to resist attacks from quantum computers, but which can also be efficiently executed on classical systems.

In 2016, the National Institute of Standards and Technology (NIST) launched an international competition to select post-quantum cryptography algorithms. After several years of testing, in 2022 it announced the first standardized candidates, including:

• CRYSTALS-Kyber: for secure key exchange.

• CRYSTALS-Dilithium: for digital signatures.

• FALCON and SPHINCS+: as secure alternatives in specific environments.

These algorithms are designed to replace or complement RSA and ECC, ensuring that information remains protected in a quantum future.

Current status and business adoption

The transition to post-quantum cryptography is already underway:

• According to Gartner (2024), by 2030 more than 30% of global companies will adopt post-quantum algorithms as part of their cybersecurity strategy.

• The IBM Quantum Safe report (2024) notes that 77% of chief information security officers (CISOs) believe they must prepare today for quantum risks.

• Companies such as Google Chrome and Cloudflare have already begun pilot testing hybrid protocols that combine classical and post-quantum cryptography.

Benefits of implementing Post-Quantum Cryptography

1. Long-term protection: ensures that information encrypted today will remain secure in the future.

2. Regulatory compliance: regulations such as GDPR, HIPAA, and FIPS are expected to incorporate quantum resistance requirements in the coming years.

3. Customer and partner confidence: companies that adopt PQC demonstrate leadership in innovation and commitment to security.

4. Scalability: post-quantum algorithms are designed to integrate into existing infrastructures without the need to replace the entire system.

Strategies for companies to prepare

1. Assess current risks: identify which data and systems would be most vulnerable to quantum attacks.

2. Adopt a hybrid approach: combine classical and post-quantum algorithms during the transition.

3. Train IT and cybersecurity teams: develop talent that masters emerging technologies.

4. Monitor NIST standards: closely follow the evolution of recommended algorithms.

5. Partner with technology experts: rely on partners such as T&M Consulting to implement security solutions adapted to the future.

Quantum computing represents one of the most disruptive advances of the 21st century, and with it, Post-Quantum Cryptography becomes the key to ensuring that companies can operate securely in the coming digital age.

Preparing now not only protects critical information but also positions organizations as leaders in innovation and resilience.

At T&M Consulting, we help SMEs and large companies anticipate the future by implementing quantum-resistant cybersecurity solutions that ensure business continuity and trust.

Visit us: tmconsulting.mx