Post-quantum key exchange, used to agree on encryption keys.
Technology
Visual: SEALSQSecure by design, from chip to orbit.
WISeSat combines its own satellites, its own ground network and post-quantum security from SEALSQ into one end-to-end system. Here is how it works.
01 · The quantum threat
Harvest now, decrypt later.
Encrypted data can be recorded today and decrypted later, once quantum computers are powerful enough. Satellites and the data they carry are built to last for years, so their protection has to withstand quantum attacks from day one.
Classical encryptionRSA, elliptic curves
TodayEncryptedData is protected
Data stored by an attackerInterceptedA copy is kept for later
Quantum eraBrokenA quantum computer decrypts it
Post-quantumWISeSat with SEALSQ
TodayEncryptedData is protected
Data stored by an attackerInterceptedA copy is kept for later
Quantum eraStill protectedQuantum-resistant algorithms hold
02 · A key's life
Born in the chip. It never leaves it.
Every device and satellite holds its own cryptographic identity. Its private key stays sealed inside the secure element: only encrypted messages and signatures ever come out.
- 1GeneratedCreated inside the SEALSQ secure element, from a validated entropy source.
- 2UsedSigns and protects every message on the user link and the feeder link. Only the results leave the chip.
- 3ProtectedThe key itself never leaves. Tamper-resistant hardware blocks any extraction attempt.
- 4ManagedCertificates are issued, renewed and revoked through the WISeKey PKI, over the device's whole life.
03 · Standards
Built on recognised standards.
Our security relies on algorithms selected by the US National Institute of Standards and Technology, not on proprietary secrets.
Post-quantum digital signatures, used to prove identity and integrity.
The chip's random number source is validated (ESV certificate #E333).
The QS7001 is built on an open, auditable architecture.
Security technology by
Quantum Shield QS7001 secure element
Quantum Shield QS7001 secure element
04 · QSOC
Earth photo: NASAKeys stored in orbit, under sovereign control.
QSOC, the Quantum Spatial Orbital Cloud, brings hardware security modules into orbit. Cryptographic keys are stored and managed on board our satellites, out of reach of any ground infrastructure.
Read the QSOC announcement