• iMessage with PQ3: The new state of the art in quantum-secure messaging

    From Jolly Roger@21:1/5 to All on Wed Feb 21 21:07:41 2024
    XPost: misc.phone.mobile.iphone, comp.sys.mac.apps

    After watching the resident Apple-hating trolls get their panties
    twisted about iMessage security in a recent thread here, I just noticed
    Apple's announcement that iMessage is now encrypted with post-quantum cryptographic algorithms born from the NIST competition a while back:

    iMessage with PQ3: The new state of the art in quantum-secure messaging
    at scale

    <https://security.apple.com/blog/imessage-pq3/>

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    Posted by Apple Security Engineering and Architecture (SEAR)

    Today we are announcing the most significant cryptographic security
    upgrade in iMessage history with the introduction of PQ3, a
    groundbreaking post-quantum cryptographic protocol that advances the
    state of the art of end-to-end secure messaging. With
    compromise-resilient encryption and extensive defenses against even
    highly sophisticated quantum attacks, PQ3 is the first messaging
    protocol to reach what we call Level 3 security — providing protocol protections that surpass those in all other widely deployed messaging
    apps. To our knowledge, PQ3 has the strongest security properties of any at-scale messaging protocol in the world.

    Messaging apps are placed on a spectrum starting with classical
    cryptography and progressing towards quantum security. Most apps fall
    into Level 0, with no end-to-end encryption by default and no quantum
    security, or Level 1, with end-to-end encryption by default, but with no quantum security. Sign