Cloudflare outlines post-quantum web privacy future powered by blind-signature breakthrough
jedisct1 · x · 2026-11-07
Cloudflare published a post exploring a potential future for post-quantum web privacy enabled by a recent breakthrough in blind signature design.
- While TLS key agreement is the top post-quantum migration priority, protocols like Privacy Pass still rely on quantum-vulnerable crypto.
- Privacy Pass issues redeemable tokens unlinkable to clients, avoiding the friction/privacy tradeoff of CAPTCHAs and fingerprinting; it has 10 years of deployment in iCloud Private Relay and Privacy Gateway.
- Next-gen goals include managing resource-hungry agentic traffic without degrading human visitors' experience, and fostering a more open ecosystem.
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