> iMessage is encrypted, the encryption is end-to-end, there are no backdoors.
How would/could we know? If the NSA doesn't have a backdoor (whether that's in the non-public iMessage code, the hardware RNG on iPhones, or somewhere else), what are they even doing all day?
We know authoritatively. Buy a new iPhone and create a new Apple ID. Install an app (which automatically logs you in to iCloud and automatically enables iCloud backup).
Wait 24 hours plugged in to AC power.
Remove the SIM card and throw the iPhone into the sea. Forget the password for the Apple ID.
Buy a new iPhone, and get Apple to reset the Apple ID password using PII/SMS/whatever. Log in and restore your iCloud backup.
Your messages are still right there, and you have provided no key material. Apple has them in plaintext or plaintext-equivalent.
How would/could we know? If the NSA doesn't have a backdoor (whether that's in the non-public iMessage code, the hardware RNG on iPhones, or somewhere else), what are they even doing all day?