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THE QUBITWIRE FIELD GUIDE

Post-quantum security

The migration of today’s systems to quantum-resistant cryptography.

A clear starting point

Post-quantum cryptography runs on conventional computers and is designed to resist both classical and quantum attacks. It is distinct from quantum key distribution, which uses physical quantum signals, and from quantum random-number generation.

Migration is a systems problem as well as an algorithm choice. Organizations need to identify where cryptography is used, check interoperability and update products as implementations and guidance evolve. Standards alignment does not automatically certify a particular product.

NIST post-quantum cryptography project

Latest coverage

FROM THE IDEA TO THE ORGANIZATIONS

Who is working on it

Security & cryptography

ID Quantique

Supplies equipment for distributing cryptographic keys and components for generating randomness. ID Quantique operates as an IonQ subsidiary following the May 2025 controlling-stake acquisition.

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Security & cryptography

PQShield

Provides cryptographic building blocks that developers integrate into applications and devices to prepare for quantum-computer attacks. PQC runs on conventional computing hardware and does not require a quantum network.

Research & evidence →
Security & cryptography

QuSecure

QuProtect discovers the cryptography used by network connections, manages algorithm changes and produces a cryptographic inventory. It applies post-quantum algorithms in conventional software.

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Selected organizations relevant to this topic. Inclusion is not a ranking.

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