use browserify-cipher for aes.

it seems everybody was including this by default before, but now webpack and others are not.

nip04.js

@@ -1,3 +1,4 @@
+import aes from 'browserify-cipher'
 import {Buffer} from 'buffer'
 import randomBytes from 'randombytes'
 import * as secp256k1 from '@noble/secp256k1'
@@ -7,7 +8,7 @@ export function encrypt(privkey, pubkey, text) {
   const normalizedKey = getOnlyXFromFullSharedSecret(key)
 
   let iv = Uint8Array.from(randomBytes(16))
-  var cipher = crypto.createCipheriv(
+  var cipher = aes.createCipheriv(
     'aes-256-cbc',
     Buffer.from(normalizedKey, 'hex'),
     iv
@@ -22,7 +23,7 @@ export function decrypt(privkey, pubkey, ciphertext, iv) {
   const key = secp256k1.getSharedSecret(privkey, '02' + pubkey)
   const normalizedKey = getOnlyXFromFullSharedSecret(key)
 
-  var decipher = crypto.createDecipheriv(
+  var decipher = aes.createDecipheriv(
     'aes-256-cbc',
     Buffer.from(normalizedKey, 'hex'),
     Buffer.from(iv, 'base64')

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nostr-tools",
-  "version": "0.10.3",
+  "version": "0.11.0",
   "description": "Tools for making a Nostr client.",
   "repository": {
     "type": "git",
@@ -9,10 +9,11 @@
   "dependencies": {
     "@noble/secp256k1": "^1.3.0",
     "bip39": "^3.0.4",
-    "buffer": "^6.0.3",
-    "create-hmac": "^1.1.7",
+    "browserify-cipher": ">=1",
+    "buffer": ">=5",
+    "create-hmac": ">=1",
     "dns-packet": "^5.2.4",
-    "randombytes": "^2.1.0",
+    "randombytes": ">=2",
     "websocket-polyfill": "^0.0.3"
   },
   "keywords": [