About the Atlas

Walk the halls. Six halls, twenty-three exhibits, in order, with progress tracked in your browser.

Open the atlas. Eight interactive labs — a live crypto bench that runs real ML-KEM and ML-DSA in your browser, the algorithm cards, the impact map, Mosca’s slider, the Q-Day simulator, the TLS handshake theater, the ECC bounce visualizer, and the collapsing threat timeline — each rendering one part of the story in a hands-on way.

Plan the migration. A six-step migration playbook turns the theory into an action plan: inventory, prioritize with Mosca’s inequality, and move to hybrid.

Take the challenges. Ten short puzzles to see whether the math landed. Solved badges live in your browser.

The single source of truth is RefDoc.md (v3.8 · May 2026) in the project root — a 21-section reference covering cryptographic foundations, modern internet security, the quantum threat, the five PQC families, and the migration playbook.

Lesson content is structured in app/lib/curriculum.ts. Algorithm metadata lives in app/lib/algorithms.ts. Impact bucketing lives in app/lib/impact.ts. Every lab footer and algorithm detail cites the relevant RefDoc section.

• · Next.js 16 (App Router) with output: “export” — every page is prerendered HTML.
• · No backend. Progress and preferences live in localStorage.
• · Static-hosted on GitHub Pages via the workflow in .github/workflows/deploy.yml.
• · Accessible by default: skip link, visible focus rings, Esc-to-close modals with focus traps, aria-pressed toggles, prefers-reduced-motion respected.
• · Responsive from 320 px and up.

Companion to “From Caesar to Post-Quantum: Building a Three-Tier Cryptography Education Portfolio” in the Code4Lib Journal.

Where the Cipher Museum shows where cryptography came from, Post-Quantum Atlas shows where it goes next.

Paul Clark — IT Librarian & Application Systems Analyst, Leon County Public Library, Tallahassee FL.

paul@systemslibrarian.dev · github.com/systemslibrarian

First time here? Replay the sixty-second guided tour.