feat: use webcrypto in favor of node-forge

BREAKING CHANGE: generateKeyPair is now async

benchmarks/ephemeral-keys.js

@@ -0,0 +1,33 @@
+'use strict'
+
+const Benchmark = require('benchmark')
+const crypto = require('../src')
+
+const suite = new Benchmark.Suite('ephemeral-keys')
+
+const secrets = []
+const curves = ['P-256', 'P-384', 'P-521']
+
+curves.forEach((curve) => {
+  suite.add(`ephemeral key with secrect ${curve}`, (d) => {
+    crypto.generateEphemeralKeyPair('P-256', (err, res) => {
+      if (err) throw err
+      res.genSharedKey(res.key, (err, secret) => {
+        if (err) throw err
+        secrets.push(secret)
+
+        d.resolve()
+      })
+    })
+  }, {
+    defer: true
+  })
+})
+
+suite
+.on('cycle', (event) => {
+  console.log(String(event.target))
+})
+.run({
+  'async': true
+})