SEALSQ Corp (NASDAQ:LAES) ("SEALSQ" or "Company"), a company that focuses on developing and selling Semiconductors, PKI, and Post-Quantum technology hardware and software products, today announced that its QS7001 Post-Quantum Secure Element has achieved NIST Entropy Source Validation (ESV) Certificate #E333 under SP 800-90B, as published on the NIST Cryptographic Module Validation Program (CMVP) registry. Validation testing was performed by SERMA Safety and Security, a leading accredited CSTL based in France, with validation confirmed on May 27, 2026.

The SP 800-90B standard, published by NIST, governs the testing and validation of entropy sources used in random bit generators for cryptographic applications. Entropy is the fundamental source of unpredictability upon which all cryptographic operations ultimately depend. A validated entropy source is a mandatory and non-negotiable prerequisite for achieving FIPS 140-3 certification of any cryptographic module, as well as for Common Criteria EAL5+ certification targets.

SEALSQ's QS7001 entropy source is implemented using a ring oscillator-based physical noise source, a well-established and rigorous approach to hardware entropy generation. The entropy source has been classified as a physical noise source with an "Open for Reuse" status, enabling broader adoption across future SEALSQ products and partner integrations that require compliant entropy generation.

The achievement follows an intensive collaboration between SEALSQ's semiconductor engineering teams in Meyreuil, France and the IC'ALPS subsidiary (SMH), and the SERMA Safety and Security testing laboratory. The successful ESV submission involved the development of a rigorous stochastic model of the entropy source, including detailed noise source characterization and statistical analysis, culminating in a compelling and technically complete submission package.

This certification milestone is strategically important for SEALSQ's product roadmap. The QS7001 is SEALSQ's flagship Post-Quantum Secure Element, designed to enable hardware-based quantum-resistant security for IoT devices, industrial systems, government and defense applications, and critical infrastructure. Its FIPS 140-3 and Common Criteria certification journey directly supports SEALSQ's growing pipeline of opportunities across regulated markets, particularly in the United States and European Union, where FIPS-validated cryptographic modules are mandatory for procurement by government agencies and regulated industries.