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Actually the devices share a key bag, the popup notifying you when other devices are using your iMessage information comes up during this exchange. The fact tha
by danielsju6 13y ago
Actually the devices share a key bag, the popup notifying you when other devices are using your iMessage information comes up during this exchange. The fact that the messages don't immediately show up on other devices and can be out of order speaks to this P2P cryptographic style.
You can search for analysis of their protocol, I've done some dissection and it's pretty solid.
- smackfu 13y agoHow does this address the concern though? Since a user only needs a password to access past sent messages, the security is only as strong as that password... and Apple can pretty easily circumvent any password related security since they are the ones verifying it.
- danielsju6 13y agoTrue, you only need your password to issue a new key set to the keybag; you can actually monitor the protocol for devices that are distributed your decryption keys (including Apple if they were spying) and you get a popup on each device alerting you to this. It is possible Apple could create a back door for them to issue a certificate set to your keybag without your permission but that would be a can of worms for them, I'm actually comforted by the fact that they'd much prefer to keep end-to-end encryption for their own liability.
- nwh 13y agoI wouldn't for a second trust that Apple /doesn't/ have the ability to do this.