fix signing functions to be more strict and correct.

event.ts

@@ -3,7 +3,6 @@ import {sha256} from '@noble/hashes/sha256'
 
 import {utf8Encoder} from './utils'
 
-
 /* eslint-disable no-unused-vars */
 export enum Kind {
   Metadata = 0,
@@ -17,7 +16,7 @@ export enum Kind {
   ChannelMetadata = 41,
   ChannelMessage = 42,
   ChannelHideMessage = 43,
-  ChannelMuteUser = 44,
+  ChannelMuteUser = 44
 }
 
 export type Event = {
@@ -41,6 +40,9 @@ export function getBlankEvent(): Event {
 }
 
 export function serializeEvent(evt: Event): string {
+  if (!validateEvent(evt))
+    throw new Error("can't serialize event with wrong or missing properties")
+
   return JSON.stringify([
     0,
     evt.pubkey,
@@ -57,9 +59,10 @@ export function getEventHash(event: Event): string {
 }
 
 export function validateEvent(event: Event): boolean {
-  if (event.id !== getEventHash(event)) return false
   if (typeof event.content !== 'string') return false
   if (typeof event.created_at !== 'number') return false
+  if (typeof event.pubkey !== 'string') return false
+  if (!event.pubkey.match(/^[a-f0-9]{64}$/)) return false
 
   if (!Array.isArray(event.tags)) return false
   for (let i = 0; i < event.tags.length; i++) {
@@ -74,7 +77,11 @@ export function validateEvent(event: Event): boolean {
 }
 
 export function verifySignature(event: Event & {sig: string}): boolean {
-  return secp256k1.schnorr.verifySync(event.sig, getEventHash(event), event.pubkey)
+  return secp256k1.schnorr.verifySync(
+    event.sig,
+    getEventHash(event),
+    event.pubkey
+  )
 }
 
 export function signEvent(event: Event, key: string): string {