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Secure transfer
How I hand over collected data securely, and how I later show that it arrived unchanged.
| Medium by post | Download link | Shared folder | |
|---|---|---|---|
| What for | large or highly sensitive sets, or no agreement for online | handover to a single recipient | viewing by all parties during the assignment |
| Tool | USB stick with a 7-Zip archive | Boomerang | Tresorit |
| The key | password separately, by phone or email | PIN separately, by text message | access by name, per email address |
| Proof of delivery | registered mail with acknowledgement of receipt | confirmation of the download | access logs |
Data and key always travel over two channels, see two-channel transfer. That the content arrived unchanged is shown with the hashes in the report, see integrity.