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The emergence of quantum computing poses a notable threat to current cryptographic systems, prompting a global effort to transition to post-quantum cryptography (PQC). This shift requires a coordinated approach involving ongoing research,proactive migration strategies,and collaborative policymaking to ensure a secure digital future. As of early 2026, the timeline for the arrival of a cryptographically relevant quantum computer (CRQC) remains uncertain, but planning is paramount.
Understanding the Quantum Threat and Post-Quantum Cryptography
Today’s widely used public-key cryptography, which secures online transactions, data storage, and communications, relies on mathematical problems that are arduous for classical computers to solve. However, quantum computers, leveraging the principles of quantum mechanics, have the potential to break these algorithms, such as RSA and ECC, efficiently. The National Institute of Standards and Technology (NIST) has been leading the effort to standardize new cryptographic algorithms that are resistant to attacks from both classical and quantum computers.
Post-quantum cryptography (PQC) refers to cryptographic algorithms that are believed to be secure against attacks by both classical and quantum computers. These algorithms are based on different mathematical problems than those used in current public-key cryptography, making them resistant to known quantum attacks. NIST announced its first set of standardized PQC algorithms in 2022, with further standardization efforts ongoing. NIST’s PQC project is a crucial step in preparing for the quantum era.
Key Areas for PQC Migration
Successfully migrating to a post-quantum secure state requires a multifaceted approach. Organizations are focusing on three key areas:
- Crypto-agility: The ability to quickly and efficiently switch between different cryptographic algorithms is crucial. This allows organizations to adapt to new threats and standards as they emerge.
- securing Critical Shared Infrastructure: Protecting the foundational systems that underpin digital trust, such as certificate authorities (CAs) and key management systems, is paramount.
- Facilitating Ecosystem Shifts: A broad transition to PQC requires collaboration across the entire digital ecosystem, including hardware and software vendors, service providers, and end-users.
Policy Recommendations for a Quantum-Ready Future
Policymakers play a vital role in accelerating the adoption of PQC and mitigating the risks posed by quantum computing. here are five key actions they can take:
1. Drive Society-Wide Momentum, Especially for Critical Infrastructure
Government efforts should extend beyond public sector networks to address vulnerabilities in critical infrastructure sectors like energy, telecommunications, and healthcare. Addressing workforce gaps and fostering collaboration with certificate authorities are also essential. The Cybersecurity and Infrastructure Security Agency (CISA) is actively working to raise awareness and provide guidance on PQC implementation.
2. Ensure AI is Built with PQC in Mind
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