From 10c20c0c5b130c389680e37e4e4aba8e2abdbf1e Mon Sep 17 00:00:00 2001
From: Adam Soltys <asoltys@gmail.com>
Date: Sat, 24 Dec 2022 05:22:50 -0800
Subject: password prompt and pin fixes

---
 src/lib/nostr.js | 30 ++++++++++++++++++++++++++++++
 src/lib/store.js |  1 +
 src/lib/utils.js |  5 +++--
 3 files changed, 34 insertions(+), 2 deletions(-)
 create mode 100644 src/lib/nostr.js

(limited to 'src/lib')

diff --git a/src/lib/nostr.js b/src/lib/nostr.js
new file mode 100644
index 00000000..df63d5d8
--- /dev/null
+++ b/src/lib/nostr.js
@@ -0,0 +1,30 @@
+import { entropyToMnemonic, mnemonicToSeedSync } from 'bip39';
+import { Buffer } from 'buffer';
+import { bech32m } from 'bech32';
+import { bip32, post, stretch } from '$lib/utils';
+import { calculateId, signId } from 'nostr';
+
+const { decode, fromWords } = bech32m;
+
+export let send = async (event, { cipher, username, salt }, password) => {
+	let mnemonic, key, seed, entropy, child, privkey;
+	entropy = Buffer.from(
+		await crypto.subtle.decrypt(
+			{ name: 'AES-GCM', iv: new Uint8Array(16) },
+			await stretch(password, Buffer.from(salt, 'hex')),
+			Uint8Array.from(fromWords(decode(cipher, 180).words))
+		),
+		'hex'
+	).toString('hex');
+
+	mnemonic = entropyToMnemonic(entropy);
+	seed = mnemonicToSeedSync(mnemonic);
+	key = bip32.fromSeed(seed);
+	child = key.derivePath("m/44'/1237'/0'/0/0");
+	privkey = child.privateKey;
+
+	event.id = await calculateId(event);
+	event.sig = await signId(privkey, event.id);
+
+	await post(`/${username}`, { event });
+};
diff --git a/src/lib/store.js b/src/lib/store.js
index 1a1a88c2..9660bf55 100644
--- a/src/lib/store.js
+++ b/src/lib/store.js
@@ -56,3 +56,4 @@ export const invoice = writable();
 export const txns = persistLocal('transactions', []);
 export const events = writable({});
 export const password = writable();
+export const passwordPrompt = writable();
diff --git a/src/lib/utils.js b/src/lib/utils.js
index 79509cc1..d4d78007 100644
--- a/src/lib/utils.js
+++ b/src/lib/utils.js
@@ -49,9 +49,10 @@ export const post = (url, body, headers) => {
 			try {
 				let { message } = JSON.parse(text);
 				if (message) return JSON.stringify({ name: 'Error', message });
-			} catch (e) {}
+			} catch (e) {
+      }
 
-			return text;
+			return { error: text };
 		})
 		.then((body) => {
 			try {
-- 
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