Let AI Use Internal Documents Without Touching the Raw Data
Keep confidential documents encrypted while passing AI only the facts and attributes it needs, with proof, so the AI never touches raw PII or originals and you can prove afterward what it actually used.
Three voices from the front line.
- IT / InfoSec
“We want AI in our workflows, but handing internal documents to a model or outside is too risky — so it's stalled”
- Digital transformation / business unit
“The PoC succeeded — but production sign-off is stuck with governance”
- CISO / internal audit
“We have no way to reconstruct or explain what the AI referenced at audit time”
Hand over the source, or just the facts?
Nothing changes on the floor. Everything changes for the receiver.
① Your team just saves, as always.
- The usual step
- Fill in the record and save
- On save
- A proof is attached (API, behind the scenes)
- The document itself
- never sent
② They just open a link.
- Proven fact
- the AI holds only the facts it needs to decide
- the document original and sensitive data
- not shown
- Login / keys
- not needed
- The document stays private — the record itself is never sent or disclosed.
- Independent verification — the receiver just opens a link. No account, no keys.
- Edits are detected — even a one-character edit fails verification.
The document stays encrypted, and the AI receives only the necessary facts and attributes — with proof. The model never touches raw PII or the original. Because the AI can prove it used only that fact, you can later explain what it referenced without disclosing the source.
See the technical details ↗Why the usual methods fall short.
Only work that needs all three at once — pass without exposing, independent verification, tamper-evidence — is Lemma's domain.
| Method | Pass without exposing | Independent verification | Tamper-evident | What happens |
|---|---|---|---|---|
| Access control / permissions | △ | ✗ | ✗ | “Someone inside could have edited it” remains possible |
| Masking / redacted copies | △ | ✗ | ✗ | Redaction work grows; the original is still unproven |
| Encrypt and store / send | ✓ | ✗ | ✗ | To verify, the receiver needs it disclosed after all |
| Lemma (ZK proof)the only one with all 3 | ✓ | ✓ | ✓ | The receiver just opens a link |
How it works — and how to start.
We help design disclosure scope and retention, run the PoC, and support production.
Start with a 30-minute call.
Tell us one workflow where "want AI but scared of leakage" applies, in the first 30 minutes. No disclosure of sensitive data required.
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Run it yourself.
No sales call needed — start hands-on with Lemma's products.