update noble secp256k1 and ensure we always return hex.

README.md

@@ -15,7 +15,7 @@ pool.addRelay('ws://some.relay.com', {read: true, write: true})
 pool.addRelay('ws://other.relay.cool', {read: true, write: true})
 
 // example callback function for a subscription
-function onEvent(event, relay) => {
+function onEvent(event, relay) {
   console.log(`got an event from ${relay.url} which is already validated.`, event)
 }
 

event.js

@@ -52,5 +52,7 @@ export function verifySignature(event) {
 }
 
 export async function signEvent(event, key) {
-  return secp256k1.schnorr.sign(getEventHash(event), key)
+  return Buffer.from(secp256k1.schnorr.sign(getEventHash(event), key)).toString(
+    'hex'
+  )
 }

keys.js

@@ -5,5 +5,5 @@ export function generatePrivateKey() {
 }
 
 export function getPublicKey(privateKey) {
-  return secp256k1.schnorr.getPublicKey(privateKey)
+  return Buffer.from(secp256k1.schnorr.getPublicKey(privateKey)).toString('hex')
 }

nip04.js

@@ -5,7 +5,7 @@ import * as secp256k1 from '@noble/secp256k1'
 
 export function encrypt(privkey, pubkey, text) {
   const key = secp256k1.getSharedSecret(privkey, '02' + pubkey)
-  const normalizedKey = getOnlyXFromFullSharedSecret(key)
+  const normalizedKey = getNormalizedX(key)
 
   let iv = Uint8Array.from(randomBytes(16))
   var cipher = aes.createCipheriv(
@@ -22,7 +22,7 @@ export function encrypt(privkey, pubkey, text) {
 export function decrypt(privkey, pubkey, ciphertext) {
   let [cip, iv] = ciphertext.split('?iv=')
   let key = secp256k1.getSharedSecret(privkey, '02' + pubkey)
-  let normalizedKey = getOnlyXFromFullSharedSecret(key)
+  let normalizedKey = getNormalizedX(key)
 
   var decipher = aes.createDecipheriv(
     'aes-256-cbc',
@@ -35,6 +35,8 @@ export function decrypt(privkey, pubkey, ciphertext) {
   return decryptedMessage
 }
 
-function getOnlyXFromFullSharedSecret(fullSharedSecretCoordinates) {
-  return Buffer.from(fullSharedSecretCoordinates).toString('hex').substr(2, 64)
+function getNormalizedX(key) {
+  return typeof key === 'string'
+    ? key.substr(2, 64)
+    : Buffer.from(key.slice(1, 33)).toString('hex')
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nostr-tools",
-  "version": "0.21.1",
+  "version": "0.22.0",
   "description": "Tools for making a Nostr client.",
   "repository": {
     "type": "git",
@@ -8,7 +8,7 @@
   },
   "dependencies": {
     "@noble/hashes": "^0.5.7",
-    "@noble/secp256k1": "^1.3.0",
+    "@noble/secp256k1": "^1.5.2",
     "browserify-cipher": ">=1",
     "buffer": ">=5",
     "create-hash": "^1.2.0",