Post-Quantum Crypto Timeline

Quantum computers will eventually break elliptic curve cryptography. Every ECDSA signature, every current wallet, vulnerable. The timeline is uncertain but the outcome isn't. We need to prepare.

The threat is harvest now, decrypt later. Adversaries can store encrypted data today. When quantum computers arrive, decrypt everything retroactively. Long-term secrets are already at risk.

Post-quantum algorithms exist. Lattice-based, hash-based, code-based cryptography. NIST standardized several. The math is solid. The implementations are maturing.

The migration challenge is massive. Every wallet needs new keys. Every signature scheme needs replacement. Every protocol needs updates. Coordinating this across a decentralized ecosystem is hard.

Blockchains have an advantage actually. Transparent, auditable systems. Hard forks can enforce migration. The community can coordinate when needed. Better than trying to update legacy banking infrastructure.

I think the smart move is hybrid schemes now. Sign with both classical and post-quantum algorithms. Belt and suspenders. When quantum arrives, the post-quantum signature still holds. Start the migration before it's urgent.