Keys

A key is 32 random bytes saved as a .key file. It’s stronger than a password, but you have to keep the file safe and get it to whoever needs to decode your WAVs.

Make a new key

Keys saved in this browser

Keys saved in this browser are convenient but less secure than a key file kept somewhere safe:

Anyone who can use this browser profile on this device can decrypt your files with this site. Saved keys have no password.
Malicious browser extensions, or a tampered copy of this site, could use saved keys while the page is open, even though they can’t copy them out.
Saved keys can’t be exported later. Keep the .key file if you need a backup or want to share the key.
Clearing site data or using private browsing removes saved keys. Safari may also delete them after about 7 days without visiting the site. Files encrypted only with a lost key can’t be recovered.

For sensitive files, use a key file or a strong password instead.

Save a key file in this browser

Keeping keys safe

Anyone with the key file can decode every WAV made with it. Treat it like a password.
If you lose the key, WAVs made with it can’t be decoded. Keep a backup somewhere safe.
To share a key, use a different channel from the WAV: for example, send the WAV by email and hand over the key on a USB stick or through an encrypted messenger.
The fingerprint (8 characters) helps you tell keys apart. It doesn’t reveal the key.
Key files from the old Python version (in ~/wavkeys) work here too.