Post-Quantum Cryptography

Traditional computers work with bits, simple binary values equal to 0 or 1. Quantum computers on the other hand work with qubits, quantum bits that can be a superposition of both 0 and 1 at the same time. Additional properties, such as the possibility of computing with entangled qubits, allow quantum computer to run specific algorithms that could not run on traditional computers.

A majority of modern cryptographic primitives relies on two problems: integer factorization and discrete logarithm. Both these problems happen to be efficiently solvable using a large enough quantum computer. Luckily, such large quantum computers do not exist yet. Still, most experts agree that at one point in the future, maybe in 5 years, 15 years, or more, they will exist. When that day comes, all security products will need to shift to so-called Post-Quantum Cryptographic primitives.

Many hard problems have been proposed for post-quantum cryptography, but the most trustworthy solutions can be grouped in four families:

• Lattice-based cryptography
• Code-based cryptography
• Multivariate cryptography
• Hash-based / MPC-based signatures

CryptoExperts’ team includes experts in each of these specific research topics, so we can tell you exactly which solution best fits your post-quantum cryptographic needs.

NIST Post-Quantum Process

NIST launched a competition in 2016 to select the future standards for post-quantum key encapsulation mechanisms, public key encryptions, and signatures. Many candidates were submitted and some of them were already selected for standardization in 2022. In 2023, NIST is launching a new process for the selection of new post-quantum signature candidates. Our team carefully follows and participate to the NIST process, by monitoring the research progresses on the already selected schemes and by proposing a signature scheme candidate.

Our offer

Our business offer aims at providing flexibility and trust to our customers. That is why we strongly commit on efficiency and security, while considering intellectual property issues and proposing flexible contracting options. In particular, our offer covers:

• Migration to post-quantum schemes. While standard algorithms are threatened by the possible arrival of quantum computers, we offer our services to organize the migration of current services to post-quantum resistant ones, from personalized designs to concrete implementations.
• Conception and secure implementations. CryptoExperts provides post-quantum specifications and implementations finely tuned to meet customer-specific requirements. Our products are secure by design against any known standard or post-quantum cryptanalysis technique. We design and develop unique instantiations on demand, taking into account the nature of the cryptographic algorithm in hand and the execution environment. CryptoExperts proposes flexible contracting options from the on-demand development of cryptographic software to the licensing of our home-made libraries.
• Security evaluation. From our strong experience in the conception and analysis of cryptographic schemes, we provide security evaluation of post-quantum schemes from their design to their implementation regarding all known standard, post-quantum, and physical attacks.

Contact us and get a precise quotation.

Why Choose CryptoExperts

CryptoExperts regroups internationally recognized experts in the field of cryptography with multi-expertise in the different areas of post-quantum cryptography. CryptoExperts was a member of the RISQ project which brought together the French digital security community (academics and industry) to prepare the post-quantum revolution. We are currently taking part to the RESQUE project with several industry leaders to go one step further in the post-quantum transition. Our team maintains up-to-date skills in post-quantum cryptography through the continuous supervision of PhD theses on this particular topic.

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