Partisia, Squareroot8, and NuSpace have signed a Memorandum of Understanding to develop a quantum-secure communication infrastructure using satellite-based Quantum Random Number Generators (QRNGs). The initiative combines space-based QRNG with advanced cryptographic methods to support encrypted key distribution and correlated randomness for secure Multi-Party Computation (MPC). A key feature of the system is its ability to transmit quantum-safe random keys from orbit to ground parties, facilitating post-quantum encrypted communication channels.
The satellite platform not only distributes random keys but also contributes to the preprocessing stage of MPC workflows. Preprocessing involves generating secret shared values and intermediate data before real inputs are known, allowing final computations to be performed more efficiently. Since this stage accounts for the majority of data exchange time in some MPC protocols, offloading it to a secure, continuously operating QRNG-equipped satellite could significantly reduce latency and computational burden.
The rationale for using satellites centers on physical inaccessibility, trusted execution, and system isolation. Satellites are more resistant to tampering than terrestrial systems and can operate independently to generate and store random values. These precomputed values can later be securely accessed and used in MPC protocols without exposing sensitive inputs, thereby enhancing both privacy and efficiency in cryptographic workflows.
This collaboration aims to provide a scalable infrastructure for quantum-secure applications, including confidential data processing and encrypted communication. By integrating quantum-safe randomness generation with secure satellite delivery mechanisms, the project addresses key cryptographic challenges posed by quantum computing. The proposed architecture enables advanced cryptographic operations in both public and private sectors under post-quantum threat models.
Read the full announcement from Partisia here.
April 14, 2025
