use tiny-secp256k1, updated nip06 and other utils.

nip06.js

@@ -1,17 +1,28 @@
 import createHmac from 'create-hmac'
-import randomBytes from 'randombytes'
-import * as bip39 from 'bip39'
+import {wordlist} from 'micro-bip39/wordlists/english'
+import {
+  generateMnemonic,
+  mnemonicToSeedSync,
+  validateMnemonic
+} from 'micro-bip39'
+import BIP32Factory from 'bip32'
+import * as ecc from 'tiny-secp256k1'
+
+const bip32 = BIP32Factory(ecc)
 
 export function privateKeyFromSeed(seed) {
-  let hmac = createHmac('sha512', Buffer.from('Nostr seed', 'utf8'))
-  hmac.update(seed)
-  return hmac.digest().slice(0, 32).toString('hex')
+  let root = bip32.fromSeed(Buffer.from(seed, 'hex'))
+  return root.derivePath(`m/44'/1237'/0'/0'`).privateKey.toString('hex')
 }
 
 export function seedFromWords(mnemonic) {
-  return bip39.mnemonicToSeedSync(mnemonic)
+  return Buffer.from(mnemonicToSeedSync(mnemonic, wordlist)).toString('hex')
 }
 
 export function generateSeedWords() {
-  return bip39.entropyToMnemonic(randomBytes(16).toString('hex'))
+  return generateMnemonic(wordlist)
+}
+
+export function validateWords(words) {
+  return validateMnemonic(words, wordlist)
 }