The math protecting our data today relies on problems that would take "classical" computers trillions of years to solve. However, are theoretically capable of cracking these codes in minutes.

Primarily used for "key exchange," allowing two parties to create a shared secret over an insecure channel. The Quantum Threat

Unlike symmetric encryption, which uses one key for everything, asymmetric systems use a :

The Dual-Key Revolution: Understanding Asymmetric Cryptography

A sender cannot later deny sending a message, as their unique digital signature (created by their private key) is attached to it. Common Algorithms You likely use these every day without knowing it: