Post-Quantum, UK — Quantum-Safe Cryptography & Security
Mission
Protect the world’s digital infrastructure from both current and future threats by delivering quantum-safe cryptography, identity, and secure communications solutions — enabling organizations to operate with confidence today while remaining secure against the cryptographic challenges posed by quantum computing.
Context
The advent of quantum computing presents a profound risk to existing cryptographic systems. Current public-key encryption methods — which underlie secure communications, financial transactions, authentication, and identity — are vulnerable to powerful quantum computers that could one day break them. This creates a “harvest now, decrypt later” threat where adversaries collect encrypted data today to decrypt it once quantum computers mature.
Unlike many cybersecurity companies that focus only on classical threats, Post-Quantum specializes in post-quantum cryptography — encryption designed to be secure against both classical and quantum attacks — and provides a suite of usable, interoperable products that protect data from creation to transmission and identity compromise.
AI Asset
Quantum-Safe Platform
Post-Quantum’s platform comprises modular and interoperable software products that protect organisations across their entire digital footprint:
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Nomidio Identity — A quantum-ready, multi-factor biometric identity system for secure passwordless authentication that resists identity-based attacks.
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Hybrid PQ VPN — A VPN solution securing data-in-transit against both classical and quantum attacks; this approach is built on IETF quantum-safe VPN standards originally authored by the company and is currently being trialed by NATO.
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PQ Chat — A quantum-safe encrypted messaging app providing end-to-end communications security.
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Approval as a Service — A cryptographically verifiable governance system enabling secure multi-party approvals for sensitive actions.
Post-Quantum also delivered the only remaining finalist algorithm in the code-based category of NIST’s Post-Quantum Cryptography standardisation process — a foundational element for next-generation public-key cryptography.
Together, these components create a quantum-safe ecosystem that protects data at rest, in motion, and across identity domains — seamlessly and backward-compatible with existing infrastructure.
Proof
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Founded: 2009; headquartered in London, United Kingdom.
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Pioneering R&D: Post-Quantum has led deep research and development in post-quantum cryptography for over a decade and authored critical algorithm submissions for global encryption standards.
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Global Validation: Its technology is being trialed by NATO for securing alliance communications, illustrating adoption in high-security environments.
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Standards Leadership: The company authored the only remaining code-based finalist algorithm in the NIST Post-Quantum Cryptography programme, positioning it for foundational roles in next-generation encryption standards.
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Cross-Sector Relevance: Post-Quantum solutions are deployed or evaluated in financial services, national defence, critical infrastructure, and enterprise security applications, reflecting wide industry applicability.
These signals demonstrate that Post-Quantum is not solely a research lab, but a commercial security innovator with real-world, deployable technology at the forefront of quantum-safe cybersecurity.
Outcomes & Value Proposition
Future-Proof Secure Communications:
Transition organizations from legacy encryption to quantum-resistant standards before quantum computing imperils current cryptographic safeguards.
Holistic Digital Protection:
Protect data from creation, storage, transmission, and identity attacks with an integrated quantum-safe platform rather than point solutions.
Seamless Crypto-Agility:
Enable organizations to adopt quantum-safe encryption without disrupting existing systems thanks to backward-compatibility and interoperable designs.
Enterprise & National Security Readiness:
Support high-security requirements for defence, financial services, and critical infrastructure — sectors where data breaches can have systemic consequences.
Standards-Aligned Approach:
Leverage leadership in NIST and IETF standards to ensure long-term compliance and alignment with evolving global encryption frameworks.
Website
Reference Videos
1️⃣ Post-Quantum VPN / “Harvest Now, Decrypt Later” Explanation — A developer-focused video exploring quantum computing’s threat to encryption and the need for quantum-safe VPNs and hybrid PQC approaches.
https://www.youtube.com/watch?v=6vdfT8bY5vk
2️⃣ What Is Post-Quantum Cryptography (PQC)? — Primer on PQC and why transitioning to quantum-safe cryptography matters — directly tied to the environment Post-Quantum operates in.
https://www.youtube.com/watch?v=8SsCbJVZ1rw
3️⃣ NIST’s Post-Quantum Cryptography Standardization Explained — Industry panel explaining NIST’s PQC process and standards that Post-Quantum’s algorithms are designed to align with.
https://www.youtube.com/watch?v=crPe69NeTdk
4️⃣ Post-Quantum Cryptography: the Good, the Bad, and the Powerful (NIST) — NIST’s animated explainer on the PQC threat landscape and why new standards are critical, underpinning Post-Quantum’s mission domain.
https://www.nist.gov/video/post-quantum-cryptography-good-bad-and-powerful
5️⃣ Post-Quantum (Official YouTube Channel) — Company’s own YouTube presence where product and security context videos may be published.
https://www.youtube.com/@post-quantum3243/videos
