KeeQuant: Securing Digital Systems with Post-Quantum Cryptography Software

KeeQuant is making quantum-safe communication physically deployable at scale, moving the conversation from theoretical threat models to integrated hardware.

What KeeQuant does

KeeQuant develops chip-scale Quantum Key Distribution (QKD) and Post-Quantum Cryptography (PQC) systems. Their focus is on miniaturising QKD protocols, traditionally reliant on bulkier optical setups, into compact chip architectures. This allows QKD to be integrated into devices where space and power are at a premium. Alongside QKD, KeeQuant also implements PQC algorithms designed to protect current digital infrastructure from attacks by future quantum computers.

Why it matters

KeeQuant’s work is critical for securing digital communications against the looming threat of quantum computing. PQC provides a software-based defence, designed to withstand algorithms run on quantum machines that could break today’s public-key cryptography. QKD offers an information-theoretically secure method for key exchange, providing long-term forward secrecy that PQC alone cannot guarantee. By developing these technologies in a chip-scale format, KeeQuant addresses the practical challenge of deploying quantum-safe solutions outside of specialised lab environments, making them accessible for broader applications.

What it takes to build

Building KeeQuant’s technology demands a rare blend of deep cryptographic theory, precision hardware engineering, and secure system design. This isn’t a typical software development role. It requires cryptographers with expertise in areas like lattice-based or code-based PQC, understanding the mathematical underpinnings of quantum-safe algorithms. On the hardware side, engineers need proficiency in photonics, integrated circuit design, and low-level FPGA or ASIC development to miniaturise QKD components. The challenge lies in integrating these complex disciplines into reliable, secure systems that can operate in diverse environments. This combination of skills is scarce, making talent acquisition for such roles particularly competitive.

The QP read

KeeQuant’s focus on deployable, chip-scale quantum security signals a clear market shift: the industry is moving from purely theoretical research to engineered, product-ready capabilities. While PQC offers a crucial stop-gap, its reliance on computational hardness assumptions means the ‘quantum-safe’ race is continuous. KeeQuant’s dual approach, pairing PQC with hardware-based QKD, acknowledges this ongoing tension. For hiring, this means firms cannot just seek theoretical physicists; they need engineers who bridge quantum mechanics with practical system integration. The future of quantum security is being built, not just imagined.

Frequently asked questions

What is chip-scale QKD?

Chip-scale Quantum Key Distribution miniaturises the components necessary for quantum key exchange onto a microchip. This allows QKD systems to be far more compact, energy-efficient, and cost-effective, enabling their deployment in a wider range of applications and devices.

How does KeeQuant address quantum threats?

KeeQuant addresses quantum threats through a dual strategy: developing Post-Quantum Cryptography (PQC) algorithms for software-based protection against quantum computer attacks on existing systems, and implementing Quantum Key Distribution (QKD) for hardware-based, information-theoretically secure key exchange, providing long-term forward secrecy.

Is Post-Quantum Cryptography (PQC) provably secure?

No, PQC is not provably secure in the same way QKD is. PQC relies on the computational hardness of certain mathematical problems, similar to current classical cryptography. While these problems are believed to be hard for both classical and quantum computers, their security is based on assumptions, not mathematical proofs.