index: use createHash/pbkdf2 directly

index.js

@@ -1,6 +1,6 @@
 var assert = require('assert')
-var crypto = require('crypto')
-var pbkdf2 = require('pbkdf2-compat').pbkdf2Sync
+var createHash = require('create-hash')
+var pbkdf2 = require('pbkdf2').pbkdf2Sync
 var randomBytes = require('randombytes')
 var unorm = require('unorm')
 
@@ -87,7 +87,7 @@ function validateMnemonic(mnemonic, wordlist) {
 }
 
 function checksumBits(entropyBuffer) {
-  var hash = crypto.createHash('sha256').update(entropyBuffer).digest()
+  var hash = createHash('sha256').update(entropyBuffer).digest()
 
   // Calculated constants from BIP39
   var ENT = entropyBuffer.length * 8

package.json

@@ -21,13 +21,14 @@
   },
   "license": "ISC",
   "dependencies": {
-    "pbkdf2-compat": "^2.0.1",
+    "create-hash": "^1.1.0",
+    "pbkdf2": "^3.0.0",
     "randombytes": "^2.0.1",
     "unorm": "^1.3.3"
   },
   "devDependencies": {
-    "browserify": "^8.0.3",
-    "mocha": "^2.1.0",
+    "browserify": "^9.0.0",
+    "mocha": "^2.2.0",
     "sinon": "^1.12.2"
   }
 }