Post Quantum
Tools for testing what comes after today's cryptography.
Measure public-key disclosure against Shor-class adversaries. Encapsulate with ML-KEM-768. Sign with ML-DSA-65. Every primitive runs client-side and self-tests on load.
Three tools. All live.
Exposure Scanner
Determines whether an address has disclosed its public key on-chain, the precondition for a Shor-class key-recovery attack, and quantifies the value at risk. Supports P2PKH, P2SH, P2WPKH, P2WSH, P2TR, Ethereum EOAs and Solana accounts.
Runs on noble-post-quantum, an open-source implementation that hasn't been independently audited yet. Great for learning and everyday files; don't trust it with secrets you can't afford to lose.
KEM Vault
Encapsulate a fresh shared secret with ML-KEM-768, derive an AES-256-GCM key through HKDF-SHA256 and seal text or a file. Only the matching secret key can open it. Nothing leaves this page.
Signature Lab
Generate keys, sign and verify with a post-quantum signature next to a classical one. Compare sizes and timings, then flip a bit in the message to watch both signatures fail.
| ML-DSA-65 | Ed25519 |
|---|
Harvest now, break later.
Public keys published today stay on-chain forever. They're safe against classical computers, but a large enough quantum computer could work backwards from them. This is the attack path we test for.
When you send from an address, or by design on Taproot and Solana.
A quantum computer derives the private key from the public one.
Funds move in a normal-looking transaction. Nothing on-chain can tell it apart.
already sit in addresses whose public keys are on-chain, mostly reused legacy addresses, by Google Quantum AI's March 2026 estimate.
No quantum computer can do this today. Keys exposed now will still be exposed when one can, which is why migration has to start early.Algorithm matrix.
The primitives securing today's chains, their hardness assumptions, and their security against classical and quantum adversaries. NIST categories are relative to AES key search.
| Primitive | Deployed in | Hardness assumption | Classical (bits) | Quantum (bits) | Status | Notes |
|---|
Upgrades in progress: Bitcoin's BIP-360 (P2MR) is proposed, not active. Solana's Winternitz Vault is opt-in and live.
Ask your AI.
POST QUANTUM also works as a connector for Claude and ChatGPT. Add it once, then ask "is my wallet quantum-safe?" and paste an address.
In Claude, add a custom connector in Settings and paste this. In ChatGPT, turn on developer mode and add it as a connector.
$PQC
The community token behind POST QUANTUM. Every tool here stays free, with or without it.
$PQC is a standard Solana token. Like every Solana token, it isn't quantum-resistant itself.