From 49b21f122a232330f7efc499095d8d80f7895a20 Mon Sep 17 00:00:00 2001
From: Ian Coleman <coleman.ian@gmail.com>
Date: Wed, 15 Feb 2017 19:45:03 +1100
Subject: [PATCH] Ethereum addresses include checksum

---
 bip39-standalone.html | 4 +++-
 src/js/index.js       | 4 +++-
 tests.js              | 4 ++--
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/bip39-standalone.html b/bip39-standalone.html
index 0d1d244..de74d80 100644
--- a/bip39-standalone.html
+++ b/bip39-standalone.html
@@ -41770,7 +41770,9 @@ window.Entropy = new (function() {
                     var privKeyBuffer = key.privKey.d.toBuffer();
                     privkey = privKeyBuffer.toString('hex');
                     var addressBuffer = ethUtil.privateToAddress(privKeyBuffer);
-                    address = "0x" + addressBuffer.toString('hex');
+                    var hexAddress = addressBuffer.toString('hex');
+                    var checksumAddress = ethUtil.toChecksumAddress(hexAddress);
+                    address = ethUtil.addHexPrefix(checksumAddress);
                 }
                 addAddressToList(indexText, address, pubkey, privkey);
             }, 50)
diff --git a/src/js/index.js b/src/js/index.js
index 41f8260..4c947a4 100644
--- a/src/js/index.js
+++ b/src/js/index.js
@@ -569,7 +569,9 @@
                     var privKeyBuffer = key.privKey.d.toBuffer();
                     privkey = privKeyBuffer.toString('hex');
                     var addressBuffer = ethUtil.privateToAddress(privKeyBuffer);
-                    address = "0x" + addressBuffer.toString('hex');
+                    var hexAddress = addressBuffer.toString('hex');
+                    var checksumAddress = ethUtil.toChecksumAddress(hexAddress);
+                    address = ethUtil.addHexPrefix(checksumAddress);
                 }
                 addAddressToList(indexText, address, pubkey, privkey);
             }, 50)
diff --git a/tests.js b/tests.js
index 677f3e2..89f4ce3 100644
--- a/tests.js
+++ b/tests.js
@@ -624,12 +624,12 @@ page.open(url, function(status) {
         // check the address is generated correctly
         // this value comes from
         // https://www.myetherwallet.com/#view-wallet-info
-        // I do not understand the capitalization scheme for this hex encoding
+        // Unusual capitalization is due to checksum
         var expected = "0xe5815d5902Ad612d49283DEdEc02100Bd44C2772";
         var actual = page.evaluate(function() {
             return $(".address:first").text();
         });
-        if (actual != expected.toLowerCase()) {
+        if (actual != expected) {
             console.log("Ethereum address is incorrect");
             console.log("Expected: " + expected);
             console.log("Actual: " + actual);
-- 
2.41.0