iMessage is set to receive a major security upgrade as Apple plans to introduce a “post-quantum encryption protocol” called PQ3.
These are some five-dollar words, but what do they mean? In short, PQ3 is a new type of encryption technology that can locally generate encryption keys for iMessage text on iPhone. The text is sent to Apple's servers where a new key is generated and sent back to the device. So, if a hacker somehow gains access to one of these messages, they won't be able to use its key to access your conversation. The locks have been changed, so to speak. This is the essence of PQ3. A post on Apple's Security Research Blog goes into more detail. For the sake of brevity, we'll keep things short. But the details talk about the encryption behind everything, how rekeying works, and the “stuffing” process, as well as comprehensive reviews conducted by cybersecurity experts.
