SEALSQ Corp (NASDAQ: LAES) is spearheading the development of a comprehensive, vertically integrated security platform designed to withstand the looming threat of quantum computing. Addressing the rapidly approaching “Q-Day” – when current encryption methods become obsolete – the company, announced on February 04, 2026, a vision for a “root-to-quantum” system encompassing secure semiconductors, post-quantum cryptography, and even sovereign quantum connectivity. This platform, presented by CEO Carlos Moreira at Tech&Fest, aims to secure Europe’s critical infrastructure, from defense to space, independent of non-sovereign technologies. “This is not just a technology stack,” said Mr. Moreira, “It is a sovereign digital aircraft carrier, a defense-grade capability that allows Europe to project trust, secure its critical systems, and preserve strategic autonomy in the quantum era.”
SEALSQ’s Root-to-Quantum Platform for Sovereign Security
The urgency stems from the approaching “Q-Day,” when current cryptographic standards will become vulnerable to quantum attacks, necessitating a proactive shift toward post-quantum solutions. SEALSQ’s approach isn’t simply software-based; it’s an end-to-end chain of trust beginning with secure semiconductor design and extending through lifecycle governance and quantum connectivity. At the platform’s core is a hardware-embedded Root of Trust, integrated directly into secure microcontrollers and TPM-class devices, ensuring immutable identity and resistance to both physical and logical attacks. SEALSQ further integrates post-quantum cryptographic mechanisms, including quantum-resistant key exchange and digital signatures, specifically optimized for resource-constrained systems.
This architecture allows for cryptographic agility, enabling seamless transitions as quantum threats evolve and new standards emerge. Each node is cryptographically bound to a silicon Root of Trust, protecting against compromised supply chains and rogue node insertion. SEALSQ’s platform also secures the entire device lifecycle – from manufacturing to decommissioning – ensuring decades of resilience and operational control for systems spanning defense, aerospace, and energy sectors.
Post-Quantum Cryptography Integrated into Secure Semiconductors
The company presented its progress at Tech&Fest, highlighting the need to prepare for “Q-Day,” the point at which current cryptographic standards become vulnerable to quantum attacks. This platform isn’t merely focused on software; it’s an end-to-end system starting with hardware-embedded Roots of Trust integrated directly into microcontrollers, secure elements, and TPM-class devices. SEALSQ’s architecture extends beyond basic security, incorporating quantum-resistant key exchange and digital signatures, optimized for use in embedded systems. Crucially, the system is designed with cryptographic agility, allowing for seamless transitions to newer standards as quantum threats evolve. The aim is to establish a sovereign capability for Europe, protecting critical infrastructure in defense, aerospace, and energy, independent of non-sovereign technologies.
Addressing the accelerating risks posed by quantum computing to embedded and mission-critical systems, Mr. Moreira emphasized the urgency of preparing for Q-Day, the moment when quantum capabilities render today’s cryptography obsolete.
Quantum Highway Enables Authenticated Node Connectivity
SEALSQ Corp is developing a platform that extends beyond conventional cryptography, establishing a secure connection between quantum and classical systems via a proprietary “quantum highway.” This infrastructure, revealed during a keynote at Tech&Fest, focuses on authenticating interactions between quantum nodes using hardware-level security—a silicon-embedded Root of Trust integrated directly into microcontrollers and secure elements. This foundational element delivers immutable identity and secure key generation, bolstering resistance against both physical and logical attacks. The system’s design prioritizes a vertically integrated approach, spanning secure semiconductor design through to quantum connectivity and lifecycle governance.
Critically, the architecture enforces cryptographic agility, ensuring a smooth transition as quantum computing capabilities advance and cryptographic standards evolve. SEALSQ’s platform secures the entire device lifecycle—from manufacturing and deployment to cryptographic updates and eventual decommissioning—providing decades of resilience.
