How to share a password-protected file without an account
For a one-off handover, a browser-encrypted share can avoid creating another account. Here is the complete Reiven workflow, from preparing a file to removing the server copy.
1. Prepare the file and password
Keep your original file. Reiven's hosted limit is 512 MiB of encrypted data including overhead, so leave room below that limit. Bundled clients encrypt the original filename and upload with the placeholder encrypted.bin; custom clients may expose their chosen upload name.
Use a password manager to generate a long random password rather than a predictable phrase or a reused account password. Encryption cannot make a weak password resistant to offline guessing.
2. Encrypt and upload
Open the sharing workspace, choose the file, and enter the password. Standard is the default encryption profile; Paranoid raises the Argon2 cost and may take longer.
Leave receiver deletion enabled if you want the recipient to remove the server copy after receiving it. Select Encrypt & Upload and wait for the completion screen.
3. Send the link and password
Send the download link, or give the recipient the 8-digit code to enter at the receive page. An access code identifies a share; it does not replace the password.
Where practical, send the password through a different channel from the link. Someone who gains access to both can decrypt the file. Keep the sender's deletion link separate unless you intend to give someone deletion access.
4. Confirm receipt and delete when finished
The recipient opens the share, enters the password, and saves the browser-decrypted file. If they cannot open it, check the code, password, and expiry before re-uploading.
Uploads expire after 24 hours and may disappear earlier if the service restarts. After receipt, either use your deletion link or let the recipient delete it if enabled. This removes the live server copy; it cannot erase files already saved elsewhere.
For device-to-device convenience, read the QR sharing guide. For more on availability, read what memory-only storage means.