I am using Keepass as my password manager. I am using a keyfile for securing access to my database. However when I want to do the same on my android phone I have to store the keyfile in my phone storage. This is of course bad since technically losing my phone means that someone who finds it can have access to the keyfile and the database. So they only need to guess my master password to get all my passwords.
I am looking for a way to securely store the keyfile. Secured with a password or a fingerprint. Optionally restricting access to the keepass app only. I can encrypt and decrypt the file manually before each unlocking of the database but it is cumbersome to traverse the file system each and every time.
When choosing a file to open from any app there is the option to choose which app to use. Is there any software out there which could show in this dialog as well? In the app I could choose the file I want which would be temporarily decrypted after authentication. The temporary file would then be passed to keepass and used.
Is there any app out there I could use for this sole purpose?