Wisekey’s satellite subsidiary Wisesat Space has signed a memorandum of understanding (MoU) with software firm EnduroSat to extend the development and deployment of secure, quantum-resilient nanosatellites for IoT applications.

The cooperation targets the integration of SealsQ secure elements, such as the VaultIC292, VaultIC408 and QS7001, into satellite payloads and ground-level endpoints. These components enable strong hardware-based security and digital identity protection, ensuring encrypted communications and trusted authentication across the IoT satellite network.

The project aims to implement post-quantum cryptographic (PQC) algorithms, aligned with NIST recommendations such as Crystals-Kyber and Crystals-Dilithium to safeguard against future quantum computing threats. Wisesat will provide the PQC algorithmic stack and support, while EnduroSat will incorporate these into its satellite and communication platform.

Bulgarian firm EnduroSat brings its expertise in modular satellite design, in-orbit validation and scalable deployment. It will lead the physical integration of SealsQ secure components into satellite buses and contribute to the overall mission architecture. Geneva-based Wisesat Space (wisesat.space) will support cryptographic integration and field engineering resources, ensuring each system meets high-security and resilience benchmarks.

The partnership further outlines the future integration of post-quantum cryptographics and secure elements into both EnduroSat and Wisesat satellite infrastructures. EnduroSat will also support the design and deployment of Wisesat’s future missions, ensuring compliance with defined security and performance requirements.

This collaboration builds on Wisesat’s deployment of its PQC-ready nanosatellites and EnduroSat’s record of delivering more than 60 satellites to orbit for institutional, scientific and commercial customers. The resulting architecture will offer scalable, tamper-proof IoT connectivity services from low Earth orbit (LEO) for use-cases in logistics, critical infrastructure, defence and environmental monitoring.

“This partnership with EnduroSat marks a significant step forward in our mission to deliver quantum-resilient, end-to-end secure satellite infrastructure,” said Carlos Moreira, CEO of Wisekey (www.wisekey.com). “By integrating SealsQ’s advanced secure elements into the expanding Wisesat constellation, we are building a tamper-proof communications backbone in space. Together with EnduroSat’s modular satellite technology, we are enabling scalable and ultra-secure IoT connectivity services from low Earth orbit, critical for securing data and infrastructure in the quantum era.”

Raycho Raychev, CEO of EnduroSat, added: “We are excited to initiate this partnership. We hope to accelerate the introduction and establishment of much stronger encryption capabilities into the satellite industry.”

EnduroSat (www.endurosat.com) is a space infrastructure builder that engineers, builds and operates satellites. The company streamlines space missions in LEO and beyond, handling every step from mission design to launch and operations. It serves more than 360 customers globally and employs more than 230 space professionals across six locations worldwide.