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CI-TDF

ClassifyIt Trusted Data Format

Download CI-TDF for Windows
Version 1.0.0.0 · Windows 64-bit · ZIP, no install wizard

What is CI-TDF?

CI-TDF is a self-contained, cryptographically verifiable container format for sensitive documents. A CI-TDF container carries its encrypted payload together with everything needed to authenticate, verify, and—for an authorized recipient—decrypt it: recipient key-access entries, integrity proofs, and signed assertions about the payload's classification and origin. None of that depends on the network, the storage location, or the application that later opens the file.

It is built on the open OpenTDF manifest structure and informed by NATO STANAG 4774/4778 labelling concepts, giving every cryptographic claim in a container something that can be independently checked—never just trusted because of where the file came from.

Highlights

Certificate or password access

Grant recipients access via X.509 certificate, a shared password, or both—fully offline, no server required.

Signed & verifiable

Every container is integrity-protected end to end; recipients can verify authenticity without trusting the channel it arrived on.

Classification labels

Attach classification, releasability, originator, and category assertions (iCLASS) directly to the container.

Works fully offline

No cloud dependency today; a federated key-access mode is planned as an addition, not a replacement.

This is an evaluation build. The installer ships with a folder of sample test certificates so you can package and open containers right away to try the format. Do not use these sample keys to protect real secrets.

Get started

Download the ZIP, extract it anywhere, and run CI_TDF.exe—no install wizard, nothing written outside the folder you extract it to. The app includes a built-in user manual and manifest reference under its Documentation tab.

Download CI-TDF-TestPackage.zip
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