File level encryption of submissions so they can't be read/modified by other applications.
Something like what is described here would work. Gererate a key which is stored in the Android Keystore. Use that to encrypt submissions when they're saved, and decrypt when they're being submitted.
File level encryption of submissions so they can't be read/modified by other applications.
Something like what is described here would work. Gererate a key which is stored in the Android Keystore. Use that to encrypt submissions when they're saved, and decrypt when they're being submitted.