SEALSQ researchers presented a peer-reviewed paper detailing a new side-channel attack on ML-KEM key generation at LightSec 2026, an event affiliated with the ongoing CHES 2026 conference. The paper, titled “Cross-information lattice attack on ML-KEM,” demonstrates vulnerability during the encoding step through a hybrid attack combining profiling techniques with lattice reduction, a method the team reports is more effective than previous approaches. This work reinforces SEALSQ’s expertise behind its Quantum Shield QS7001 secure element.
Cross-Information Lattice Attack on ML-KEM Key Generation
The research team introduced a hybrid methodology, combining profiling-based techniques that analyze statistical variations in execution with lattice reduction, a mathematical approach to simplifying complex lattice problems. This combined attack method proved more effective at extracting sensitive information than previous techniques relying on either approach in isolation, allowing for efficient exploitation of side-channel leakage. Researchers detailed practical countermeasures designed to bolster ML-KEM implementations against these attacks, suggesting a proactive approach to securing the key generation process.
The work highlights the ongoing need to address implementation-level vulnerabilities even in mathematically sound cryptographic schemes, particularly for devices with limited resources or extended operational lifespans. Side-channel vulnerabilities, stemming from factors like power consumption and electromagnetic emissions, remain a critical concern for lattice-based cryptography. SEALSQ’s Quantum Shield QS7001 secure element directly benefits from this research, as it embeds NIST-standardized post-quantum algorithms, including ML-KEM, directly into hardware.
The QS7001 incorporates hardware-level acceleration and dedicated countermeasures against simple power analysis (SPA) and differential power analysis (DPA), along with active shielding and scrambling techniques. These features specifically address the implementation risks identified in the LightSec paper, demonstrating a commitment to robust security beyond theoretical cryptographic strength.
The secure element is currently undergoing the rigorous Common Criteria EAL5+ Certification process, further validating its security posture, SEALSQ says. Carlos Moreira, Founder, Chairman and CEO of SEALSQ, stated that presenting peer-reviewed work on ML-KEM implementation security at a CHES-affiliated workshop emphasises the company’s dual role as both product innovators and contributors to the global cryptographic research community. He added that their expertise in side-channel analysis and countermeasures, combined with the QS7001’s hardware-embedded post-quantum cryptography, strengthens their ability to deliver trusted security solutions, according to SEALSQ.
These capabilities position SEALSQ to address customers’ evolving security requirements and pursue growth opportunities as the market transitions to post-quantum technologies. SEALSQ’s ongoing research builds upon prior work on side-channel protection for polynomial-based algorithms, reinforcing its commitment to developing sovereign, crypto-agile architectures capable of adapting to evolving standards and threats. The company’s intellectual property portfolio continues to expand, supporting long-term security and resilience in a rapidly changing landscape.
Presenting peer-reviewed work on ML-KEM implementation security at a CHES-affiliated workshop underscores our dual role as both product innovators and contributors to the global cryptographic research community.
Carlos Moreira, Founder, Chairman, and CEO of SEALSQ
See today’s quantum computing news on Quantum Zeitgeist for the latest breakthroughs in qubits, hardware, algorithms, and industry deals.
