Z6 PQC-Gateway
Denial-of-service protection for post-quantum endpoints
Z6 PQC-Gateway launched on July 17, 2026 with 5 votes, #4,557 of 24,623 launches that month and more than 75% of that year's launches.
What it does
ML-KEM-768 decapsulation costs 791 µs of server CPU, and any client triggers it with 1,088 bytes. In one month Cloudflare handled 89 separate attacks above 100m. Google mitigated one peaking at 398m. Absorbing that means owning 80k cores that idle the rest of the year. Nobody provisions that at any price, so the endpoint goes down. Or a 24-byte token, 2.2% overhead on the ciphertext it gates, no server state, no session memory, no shared secret.
Stateless denial-of-service protection for post-quantum key exchange. A 24-byte admission token, verified in 1.5 microseconds, in front of any ML-KEM endpoint.
An LLM inference call costs seconds of GPU time. A post-quantum handshake, 791 µs of CPU. Both are triggered by a request that costs the sender nothing to send. A CDN absorbs volumetric floods, but it cannot tell you whether a well-formed request was worth serving. That judgement has to happen at your edge, before the expensive work starts. This is that step. A 24-byte token, verified in 1.5 µs with no server state, that costs the requester real CPU to obtain and costs you almost nothing to refuse. Z6P , the accompanying protocol, is post-quantum and photonics compatible. Pick what a single request costs you to serve, then a rate someone can push at you. The gap between those two numbers is…from secz6.oooooooooo.se
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