Applying Operational Perfect Secrecy to the world's most critical data environments.
Low-latency Confidentiality
HNDL (Harvest Now, Decrypt Later) on transaction data and high-latency overhead from standard PQC.
QuStream's XOR-based data plane adds only ~4–6ns of latency, providing ITS-grade protection for HFT networks and institutional order flows.
The Last-Mile Problem
QKD secures the backbone, but delivering those keys to edge devices over classical networks reintroduces vulnerability.
Preserves ITS-grade key rotation by sending authenticated public noise epochs while endpoints derive traffic keys locally from their DFK ratchets.
Tactical Field Security
Extending ITS from command centres to tactical endpoints over intermittent or degraded field links.
Transport-independent authenticated noise epochs delivered over satellite, radio, or burst comms, offering inherent SNDL immunity for field assets.
OT & SCADA Protection
Industrial systems with 30-year operational lifespans outlasting the security of current computational encryption.
Overlay protection for Modbus, DNP3, and IEC 61850 protocols with zero changes required to existing industrial controllers.
Operational Perfect Secrecy is a foundational shift in how data is secured. Whether it's ultra-low latency finance, tactical field communications, or multi-decade critical infrastructure, QuStream provides the only technically defensible position against future quantum threats.
QuStream protects your data from threats that don't exist yet, running on the infrastructure you already have. Talk to us about your network.