Multi-Gigabit Laser Cross-Link Cryptography for Satellite Constellations

Securing optical inter-satellite mesh networks operating at 10 to 40 Gbps across orbital planes.

The Rise of Orbital Laser Mesh Networks

Modern LEO constellations (such as Starlink, Kuiper, and defense constellations) utilize Optical Inter-Satellite Links (OISL) to route petabytes of data directly in space, bypassing terrestrial chokepoints. SpaceHSM delivers ultra-high-speed pipelined AES-GCM coprocessors directly coupled to laser optical transceivers.

Autonomous Inter-Satellite Key Management

As satellites traverse orbital paths at 7.8 km/s, cross-link topologies change continuously. SpaceHSM autonomously executes ephemeral elliptic-curve handshakes with newly acquired peer satellites in under 5 milliseconds, maintaining unbroken, encrypted mesh routing across the constellation.

Wire-Speed Optical Encryption: Processing 10 Gbps to 40 Gbps laser communications with sub-microsecond latency.
Inter-Orbital Key Exchange: Automated dynamic key negotiation between satellites entering and exiting mutual line-of-sight.
SDA Standard Alignment: Conforming to Space Development Agency (SDA) optical communications terminal specifications.
Constellation Mesh Routing: Preserving encryption context across multiple satellite hops before downlink to ground gateways.

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