Passwords are broken. They get leaked in database breaches, reused across platforms, and phished through clever domain spoofs. While Multi-Factor Authentication (MFA) helps, standard SMS or OTP codes still leave major security gaps.
Enter Passkeys: a modern authentication standard built on top of WebAuthn and FIDO2 specifications designed to eliminate shared secrets entirely.
Here is a dive into the underlying cryptography, architectural flow, and why passkeys are inherently phishing-proof.
The Core Concept: Asymmetric Cryptography
Traditional authentication relies on shared secrets. Both you and the server know your password (or a hashed version of it). To verify who you are, you send that secret over the network.
