Googstr/extension/provider.js
Jason Tudisco fcfaec675a Add NIP-46 signer, optional NIP-07 extension, passkey protection, backups
- NIP-46 remote signer in the page (bunker:// and nostrconnect:// pairing)
- Chrome extension (NIP-07) with per-site permission prompts, unlocked by
  the site via externally_connectable; downloadable from the page
- Passkey (WebAuthn PRF) encryption of the Drive key file
- NIP-49 backups: download or save to Drive; reveal nsec
- Fix: oldest key file wins when two devices sign up at once
- Fix: never overwrite an existing kind-0 because a relay was slow
- Fix: EOSE tracking; relays reconnect with backoff; verify event signatures
- One-click re-sign-in (consent only the first time)
- Vendored, pinned nostr-tools; CSP; no third-party scripts but Google's

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-29 08:33:02 -06:00

40 lines
1.5 KiB
JavaScript

// Runs in the page's own JavaScript world and defines window.nostr (NIP-07).
// Calls are forwarded to content.js with postMessage, then to the background
// worker, which asks the user before any site can use the key.
(() => {
if (window.nostr) return; // another signer extension got here first
const pending = new Map();
let seq = 0;
window.addEventListener("message", (e) => {
if (e.source !== window || e.data?.__goostr !== "res") return;
const p = pending.get(e.data.id);
if (!p) return;
pending.delete(e.data.id);
if (e.data.error) p.reject(new Error(e.data.error));
else p.resolve(e.data.result);
});
const call = (method, params) =>
new Promise((resolve, reject) => {
const id = `goostr-${++seq}-${Math.random().toString(36).slice(2)}`;
pending.set(id, { resolve, reject });
window.postMessage({ __goostr: "req", id, method, params }, location.origin);
});
window.nostr = {
getPublicKey: () => call("getPublicKey"),
signEvent: (event) => call("signEvent", { event }),
getRelays: () => call("getRelays"),
nip04: {
encrypt: (pubkey, plaintext) => call("nip04.encrypt", { pubkey, plaintext }),
decrypt: (pubkey, ciphertext) => call("nip04.decrypt", { pubkey, ciphertext }),
},
nip44: {
encrypt: (pubkey, plaintext) => call("nip44.encrypt", { pubkey, plaintext }),
decrypt: (pubkey, ciphertext) => call("nip44.decrypt", { pubkey, ciphertext }),
},
};
})();