Will authentication evolve to cryptographic identity (DID)?
Decentralized Identity (DID) concepts could transform email authentication: cryptographically verified sender identity independent of domain ownership, portable across email providers, and verifiable without **DNS** dependence.
Potential benefits: identity tied to individual rather than organization, stronger authentication than current protocols, and interoperability across messaging systems.
Challenges: requires fundamental infrastructure changes, adoption across entire ecosystem needed, and current system (**DNS**-based authentication) works reasonably well. Evolution is possible but not imminent.
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