From fc34f08181a0e19b1f372f20748df1882d5599bc Mon Sep 17 00:00:00 2001
From: Alex Beregszaszi <alex@rtfs.hu>
Date: Tue, 26 Apr 2016 15:14:37 +0100
Subject: [PATCH] Use importPublic and isValidPublic from ethereumjs-util 4.4.0

---
 index.js     | 9 +++------
 package.json | 3 +--
 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/index.js b/index.js
index 1de86c7..3e1abb0 100644
--- a/index.js
+++ b/index.js
@@ -2,7 +2,6 @@ var ethUtil = require('ethereumjs-util')
 var crypto = require('crypto')
 var scryptsy = require('scrypt.js')
 var uuid = require('uuid')
-var secp256k1 = require('secp256k1')
 var bs58check = require('bs58check')
 
 function assert (val, msg) {
@@ -24,7 +23,7 @@ var Wallet = function (priv, pub) {
     throw new Error('Private key does not satisfy the curve requirements (ie. it is invalid)')
   }
 
-  if (pub && pub.length !== 64) {
+  if (pub && !ethUtil.isValidPublic(pub)) {
     throw new Error('Invalid public key')
   }
 
@@ -171,11 +170,9 @@ Wallet.prototype.toV3String = function (password, opts) {
 }
 
 Wallet.fromPublicKey = function (pub, nonStrict) {
-  // FIXME: duplicate from ethUtil.publicToAddress(), maybe it could be factored out?
-  if ((pub.length !== 64) && nonStrict) {
-    pub = secp256k1.publicKeyConvert(pub, false).slice(1)
+  if (nonStrict) {
+    pub = ethUtil.importPublic(pub)
   }
-  assert(pub.length === 64, 'Invalid public key')
   return new Wallet(null, pub)
 }
 
diff --git a/package.json b/package.json
index 7e2b7e4..d3ce718 100644
--- a/package.json
+++ b/package.json
@@ -28,10 +28,9 @@
   "dependencies": {
     "aes-js": "^0.2.3",
     "bs58check": "^1.0.8",
-    "ethereumjs-util": "^4.3.0",
+    "ethereumjs-util": "^4.4.0",
     "hdkey": "^0.7.0",
     "scrypt.js": "^0.2.0",
-    "secp256k1": "^3.0.1",
     "uuid": "^2.0.1",
     "utf8": "^2.1.1"
   },