LeftPad ethereum private keys with zeros if needed

src/js/index.js

@@ -799,7 +799,7 @@
                 }
                 // Ethereum values are different
                 if (networks[DOM.network.val()].name == "ETH - Ethereum") {
-                    var privKeyBuffer = key.keyPair.d.toBuffer();
+                    var privKeyBuffer = key.keyPair.d.toBuffer(32);
                     privkey = privKeyBuffer.toString('hex');
                     var addressBuffer = ethUtil.privateToAddress(privKeyBuffer);
                     var hexAddress = addressBuffer.toString('hex');

tests/spec/tests.js

@@ -2850,4 +2850,29 @@ it('Can display the table as csv', function(done) {
     });
 });
 
+it('LeftPads ethereum keys that are less than 32 bytes', function(done) {
+    // see https://github.com/iancoleman/bip39/issues/155
+    selectNetwork("ETH - Ethereum");
+    driver.findElement(By.css('#bip32-tab a'))
+        .click()
+    driver.findElement(By.css('#bip32-path'))
+        .clear();
+    driver.findElement(By.css('#bip32-path'))
+        .sendKeys("m/44'/60'/0'");
+    driver.findElement(By.css('.phrase'))
+        .sendKeys('scout sort custom elite radar rare vivid thing trophy gesture cover snake change narrow kite list nation sustain buffalo erode open balance system young');
+    driver.sleep(generateDelay).then(function() {
+        driver.findElement(By.css(".address"))
+            .getText()
+            .then(function(address) {
+                expect(address).toBe("0x8943E785B4a5714FC87a3aFAad1eB1FeB602B118");
+                done();
+            });
+        //getFirstAddress(function(address) {
+        //    expect(address).toBe("0x8943E785B4a5714FC87a3aFAad1eB1FeB602B118");
+        //    done();
+        //});
+    });
+});
+
 });