3 files changed, 27 insertions, 18 deletions
diff --git a/app/scripts/keyring-controller.js b/app/scripts/keyring-controller.js
index 7ebcc6b2c..8192ed790 100644
--- a/app/scripts/keyring-controller.js
+++ b/app/scripts/keyring-controller.js
@@ -263,6 +263,8 @@ module.exports = class KeyringController extends EventEmitter {
   }
 
   setLocked(cb) {
+    this.key = null
+    this.keyrings = []
     cb()
   }
 
diff --git a/app/scripts/keyrings/simple.js b/app/scripts/keyrings/simple.js
index 6c5af1884..9e832f274 100644
--- a/app/scripts/keyrings/simple.js
+++ b/app/scripts/keyrings/simple.js
@@ -2,6 +2,7 @@ const EventEmitter = require('events').EventEmitter
 const Wallet = require('ethereumjs-wallet')
 const ethUtil = require('ethereumjs-util')
 const type = 'Simple Key Pair'
+const sigUtil = require('../lib/sig-util')
 
 module.exports = class SimpleKeyring extends EventEmitter {
 
@@ -55,7 +56,7 @@ module.exports = class SimpleKeyring extends EventEmitter {
     const message = ethUtil.removeHexPrefix(data)
     var privKey = wallet.getPrivateKey()
     var msgSig = ethUtil.ecsign(new Buffer(message, 'hex'), privKey)
-    var rawMsgSig = ethUtil.bufferToHex(concatSig(msgSig.v, msgSig.r, msgSig.s))
+    var rawMsgSig = ethUtil.bufferToHex(sigUtil.concatSig(msgSig.v, msgSig.r, msgSig.s))
     return rawMsgSig
   }
 
@@ -65,20 +66,3 @@ module.exports = class SimpleKeyring extends EventEmitter {
 
 }
 
-function concatSig (v, r, s) {
-  const rSig = ethUtil.fromSigned(r)
-  const sSig = ethUtil.fromSigned(s)
-  const vSig = ethUtil.bufferToInt(v)
-  const rStr = padWithZeroes(ethUtil.toUnsigned(rSig).toString('hex'), 64)
-  const sStr = padWithZeroes(ethUtil.toUnsigned(sSig).toString('hex'), 64)
-  const vStr = ethUtil.stripHexPrefix(ethUtil.intToHex(vSig))
-  return ethUtil.addHexPrefix(rStr.concat(sStr, vStr)).toString('hex')
-}
-
-function padWithZeroes (number, length) {
-  var myString = '' + number
-  while (myString.length < length) {
-    myString = '0' + myString
-  }
-  return myString
-}
diff --git a/app/scripts/lib/sig-util.js b/app/scripts/lib/sig-util.js
new file mode 100644
index 000000000..f8748f535
--- /dev/null
+++ b/app/scripts/lib/sig-util.js
@@ -0,0 +1,23 @@
+const ethUtil = require('ethereumjs-util')
+
+module.exports = {
+
+  concatSig: function (v, r, s) {
+    const rSig = ethUtil.fromSigned(r)
+    const sSig = ethUtil.fromSigned(s)
+    const vSig = ethUtil.bufferToInt(v)
+    const rStr = padWithZeroes(ethUtil.toUnsigned(rSig).toString('hex'), 64)
+    const sStr = padWithZeroes(ethUtil.toUnsigned(sSig).toString('hex'), 64)
+    const vStr = ethUtil.stripHexPrefix(ethUtil.intToHex(vSig))
+    return ethUtil.addHexPrefix(rStr.concat(sStr, vStr)).toString('hex')
+  },
+
+}
+
+function padWithZeroes (number, length) {
+  var myString = '' + number
+  while (myString.length < length) {
+    myString = '0' + myString
+  }
+  return myString
+}