Administrator issues
Set direction, maximum bytes, accepted file types, and a hard expiry.
PRIVATE FILE DELIVERY
Send it once.
Then the door closes.
Offy creates purpose-bound upload and download keys that expire after one use. Files stay quarantined until they pass server-side validation.
TRANSFER POLICYENFORCED
1×
- Secret location
- Browser fragment
- Key storage
- HMAC hash only
- Download path
- Protected stream
- File state
- Quarantine first
ONE LINK. ONE ACTION.
A narrow path from sender to recipient.
Recipient redeems
The secret remains outside server logs until the deliberate upload or download action.
Offy closes the gate
An atomic database claim prevents a second request from winning the same key.
HTTPSStrict transport
LOCALPrivate storage
TYPEMIME validation · no AV
SFTPOptional single-file gateway