Swiss security firm EnsoLab Tech AG launched its SkyBridge payload into low-Earth orbit on Monday aboard a SpaceX Falcon 9 rocket, marking what the company describes as the first real-world test of post-quantum cryptographic communications hardware in space.
The mission lifted off at 10:20 UTC from Vandenberg Space Force Base in California as part of SpaceX's Transporter-16 rideshare mission. SkyBridge will evaluate next-generation encryption protocols designed to withstand attacks from future quantum computers, testing how those methods perform and adapt on commercial hardware under the harsh conditions of orbit.
What SkyBridge Will Test
The payload will assess post-quantum cryptographic encryption and secure satellite-to-ground communications over an initial operations phase lasting two to three weeks, with broader results expected over time. The mission targets applications for defence, government, satellite operators, and critical infrastructure providers — sectors already preparing for the eventual shift to quantum-resistant security.
"This is one of the most demanding environments a hardware system can face," EnsoLab founder Masood Shaikh Mohammed said of the orbital testing conditions. Prof. Andrea Guerrieri, technical lead within EnsoLab's research core and head of the Adaptive Heterogeneous Systems Lab at HES-SO in Switzerland, said the technology "creates a new way for space systems to communicate safely, adapt to changes, and perform, even in a future where current encryption methods may no longer be secure".
A Growing Race for Quantum-Safe Space Communications
The launch comes amid accelerating global efforts to harden communications infrastructure against quantum threats. In August 2024, the National Institute of Standards and Technology finalized three post-quantum cryptography standards, and in March 2025 selected an additional key encapsulation mechanism, providing the algorithmic foundation for migration worldwide. Google announced last week a 2029 timeline for completing its own post-quantum cryptography migration.
Other firms have pursued similar orbital tests. SEALSQ Corp launched a satellite with post-quantum cryptographic chips aboard a Falcon 9 in 2025, and U.S.-based Forward Edge-AI has a working post-quantum prototype on orbit with plans for a quantum-secure space router.
The SkyBridge mission is supported by partners including DPhi Space and Momentus, and is connected to research with HES-SO Valais-Wallis School of Engineering in Switzerland. EnsoLab plans to use the results to advance further development and early commercial activity.
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