Quantum Readiness
Post-quantum exposure calculator
Data you send today has to stay secret for years. Check whether it outlives your own migration plan — and your own assumptions.
Save inputs locally to resume this tool. Files may contain sensitive entered information; review before sharing. No automatic storage or transmission. Report JSON is an output record, not an input import format.
Contracts, health records and government data often run decades. Pricing data may be worthless in a month.
Be honest. Most estates have not started the inventory, let alone the migration.
Your assumption, not our prediction. Credible estimates vary by decades and anyone quoting you a precise year is selling something.
Exposed
Data you send today must stay secret 1 year past your own assumption.
A payload transmitted today has to remain confidential until 2036. You have assumed the capability to decrypt it exists from 2035. Nobody needs a quantum computer to capture that traffic — only to read it later.
- 2026–2031migration window
- 2035assumed arrival
- 2036secrecy ends for data sent today
- Years of traffic sent before migration completes
- 5
- Data sent on the last day of migration stays secret until
- 2041
All of it capturable today, under classical cryptography.
Still past your assumed arrival year — finishing the migration does not clear it.
This is arithmetic, not a forecast. It takes your three assumptions and reports what they imply. The number it cannot give you is the one that matters most — how many interfaces in your estate carry data with a long confidentiality requirement. That requires an inventory. Why that is the hard part.
These exist because the underlying problem is real. If the numbers you just put in look uncomfortable, that is usually worth a conversation.
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