How it works ?
Everything in SecureBox is encrypted and permanently stored, based on your chosen Data Storage Mode. If you decide to edit any of the items, they are temporarily stored on your device.
When you send something to a conversation partner, it’s temporarily decrypted. Any traces of your edits are erased. If needed, it is locked with a password (Ticket) you’ve set with the conversation partner. Then, it is encrypted using the pair or group key and sent to the recipient.
Reminder: Titles that are not encrypted will still be visible (Restricted Mode restrictions apply). When you view something, like a photo file, it is decrypted according to your Data Storage Mode. After you close it, everything is cleared locally.