Explained: What is quantum-secure cryptography in messaging apps, how does it work, and more

Messaging apps like iMessage, WhatsApp, and Signal use special maths to keep chats private. Apple has implemented quantum-safe encryption for iMessage. Post-quantum cryptography replaces vulnerable encryption schemes. Quantum-safe codes use multidimensional geometries, making it harder for quantum computers. Apple's upcoming updates will provide Level 3 security to iMessage.

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