From the Frontlines of Post-Quantum Cryptography

The quantum computing revolution is approaching faster than many anticipated. While quantum computers promise unprecedented computational power, they also pose a significant threat to current encryption methods. Post-quantum cryptography (PQC) represents the next frontier in cybersecurity—and organizations must prepare now.

The Quantum Threat

Current encryption standards, including RSA and ECC, rely on mathematical problems that classical computers cannot solve efficiently. However, quantum computers using Shor's algorithm could break these encryptions in minutes, potentially exposing sensitive data across government, financial, and healthcare sectors.

What is Post-Quantum Cryptography?

PQC refers to cryptographic algorithms designed to be secure against both quantum and classical computers. These new algorithms are based on mathematical problems that remain difficult even for quantum computers to solve:

• Lattice-based cryptography: Based on the difficulty of lattice problems
• Hash-based signatures: Relying on the security of hash functions
• Code-based cryptography: Using error-correcting codes
• Multivariate cryptography: Based on solving systems of multivariate equations

NIST Standardization

The National Institute of Standards and Technology (NIST) has been leading the effort to standardize post-quantum algorithms. After years of evaluation, NIST has selected several algorithms for standardization, marking a critical milestone in the transition to quantum-resistant security.

Preparing Your Organization

The transition to post-quantum cryptography requires careful planning:

• Inventory current cryptographic assets and dependencies
• Assess risk exposure to quantum threats
• Develop a crypto-agility strategy
• Begin testing PQC algorithms in non-production environments
• Plan for hybrid approaches during the transition period

Beckham Brown Clark is at the forefront of post-quantum cryptography research and implementation. Our team works with organizations to assess their quantum risk exposure and develop comprehensive migration strategies.