Challenges and Opportunities from Quantum-Safe Cryptography
summary
Lattice-based schemes replace RSA/ECC: Kyber (~800 B public keys and ciphertexts) and Dilithium signatures (larger, with ~10 rejection-sampling trials expected) are now standardized; security relies on the Learning With Errors problem. Browser and server rollouts already put roughly 30% of connections via Cloudflare on post‑quantum key exchange, Signal and Apple use hybrid Kyber deployments, and FIDO/passkey integration is prototyped with only small server changes. Main obstacles are ciphertext/key/signature size, memory and protocol limits, and multi‑jurisdiction migration timelines (NSA deadlines ~2030–2033).
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chapters (10)
- 0:00Quantum-safe cryptography intro
- 2:17Modern crypto vulnerabilities
- 14:21Quantum threat to crypto
- 25:29Post-quantum cryptography
- 38:43PQC standardization timeline
- 47:13Why prepare now
- 51:27Government mandates and PQC adoption
- 57:16Post-quantum signatures in systems
- 59:06PQC adoption challenges
- 1:03:19PQC opportunities and future
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