4 ms·

Not just the messages - the key too. Just imagine the outcry from someone breaking his iPhone not being able to restore his messages because of the introduction

Not just the messages - the key too. Just imagine the outcry from someone breaking his iPhone not being able to restore his messages because of the introduction of end-to-end. That way, you don't even have to attack WhatsApp itself and they have all the plausible deniability they needed.

mtgx 11y ago
Why would the key be backed up to iCloud? Do you have a source for this?
- wyldfire 11y ago
  Does iOS have a way to designate parts of app data as secret/transient/do_not_back_up? I suspect not. EDIT: It appears that I was incorrect.
  - ctz 11y ago
    Yes, the NSURLIsExcludedFromBackupKey file property.
sneak 11y ago
The cryptosystem in use by Signal and now WhatsApp does not work this way. It offers forward secrecy, where recovery of the long-term keys will not allow decryption of past intercepted encrypyed messages.
eeeeeeeeeeeee 11y ago
Would love to see a source on this. Every time I restore an iOS device, I need to manually re-enter anything secret like passwords.