Physics-Grade Cryptographic Assurance for the Quantum Era
Proving what cannot be broken. Verified, not forecast.
The problem with forecasts
Every organisation that depends on encryption faces the same question as quantum computing and AI-assisted attackers advance: what will still be secure, and for how long? The tools available today answer by forecasting when a powerful quantum computer will exist, then planning around the estimate.
Forecasts drift. Organisations relying on them either over-spend on protection they may not need or, worse, leave critical assets exposed without realising it. The harvest-now-decrypt-later threat makes this especially acute: data captured today can be stored for decryption once the capability matures.
Measure the limit, not the forecast
PSMB replaces the forecast with a measurement of physical possibility. Rather than asking when a quantum computer of a given size might exist, it asks whether any computer the laws of physics permit — however large, however powerful, however far in the future — could ever break a given cryptographic asset within a chosen time horizon.
The output is a security margin: a clear figure indicating how far the asset sits from the boundary of physical breakability. A positive margin means the asset is safe against any adversary the laws of physics permit. A negative margin means it is provably breakable and must be replaced.
Industries served
Banking, cloud & PKI
A continuous, verifiable margin on every key and certificate, with prioritised migration.
Audit, compliance & insurance
Evidence and pricing inputs that an auditor or actuary can verify independently.
Blockchain & digital assets
A live signal of which chain primitives are exposed, and which holdings to move first.
Healthcare, legal & archives
Exposure scoring for long-lived confidential data against retrospective decryption.
Central banking & payments
A multi-decade assurance case for digital currency and settlement ledgers.
Space & satellite
Protection sizing for cryptographic payloads in high-radiation orbits.
Inside the document
What you will read
- ✓Why forecast-based quantum risk tools fail and how PSMB replaces them
- ✓How physical limits — not technology estimates — determine cryptographic safety
- ✓The security margin concept: a single, verifiable figure per cryptographic asset
- ✓Why most major blockchain signature schemes are provably breakable against a physics-limit adversary
- ✓How hash-based and high-strength symmetric protections remain safe by an enormous margin
- ✓Applications across banking, insurance, blockchain, healthcare, central banking and satellite
- ✓Five deployment models: portal modules, software libraries, embedded firmware, ledger services, and consultancy
Three properties no forecast can match
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Ready to verify your cryptographic security with physics?
Download the whitepaper, or contact Physivitis to discuss an evaluation or pilot.