Post-quantum security
Will your systems survive a quantum computer, and by when to migrate?
2 lessons, 10 course topics, about 72 min at Plain. Opened pages are remembered in this browser only.
Start here
Can quantum break Bitcoin?about 2 min at PlainThe lessons, in reading order
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Can quantum break Bitcoin?
You'll be able to estimate how many qubits, and how long, it takes to break a Bitcoin key on a fast or a slow machine.
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Post-quantum cryptography, on the wire
You'll be able to check an endpoint, measure what post-quantum costs in bytes, read your own certificates and keys, and work out whether it is too late to start.
- Quick Check3 min
- The Size Cliff3 min
- The Inventory3 min
- The Sequencer3 min
- The Odds3 min
- The Harvest Clock3 min
- The Proof3 min
The course: Cryptography, before and after Shor
Keys, hashes and signatures from scratch, which ones a quantum computer opens, and what replaces them. Open the course page.
Secrets Three topics: what keeps a secret, and what a quantum computer does to the cheap half
Public keys Three topics: the locks anyone can close, and the one weak point they share
After Shor Four topics: what falls, what replaces it, and how you move
How this track counts toward your rank
Your rank is a code distance, d3 up to d25. Points come from questions you answer correctly and game levels you finish, never from opening a page, and each point belongs to one track. Your overall rank is set by your weakest track, and the top rank needs 80% of every track. This track holds 72 points: 7 lesson check questions, 1 point each (7); 10 course topic checks, 2 points each (20); 15 game levels, up to 3 points each for gold (45). Its games: Q-Day Command (4), Lattice Heist (5), Shor's Clockwork (6).
| Rank | Points |
|---|---|
| d3 | 0 |
| d5 | 6 |
| d7 | 11 |
| d9 | 16 |
| d11 | 21 |
| d13 | 27 |
| d15 | 32 |
| d17 | 37 |
| d19 | 42 |
| d21 | 48 |
| d23 | 53 |
| d25 | 58 |