fix signing messages

src/blockchain/providers/injected.js

@@ -37,8 +37,8 @@ class InjectedProvider {
   signMessage (message, account, _passphrase, cb) {
     const hashedMsg = Web3.utils.sha3(message)
     try {
-      this.executionContext.web3().eth.sign(account, hashedMsg, (error, signedData) => {
+      this.executionContext.web3().eth.sign(hashedMsg, account, (error, signedData) => {
-        cb(error.message, hashedMsg, signedData)
+        cb(error, hashedMsg, signedData)
       })
     } catch (e) {
       cb(e.message)

src/blockchain/providers/node.js

@@ -47,7 +47,7 @@ class NodeProvider {
     try {
       const personal = new Personal(this.executionContext.web3().currentProvider)
       personal.sign(hashedMsg, account, passphrase, (error, signedData) => {
-        cb(error.message, hashedMsg, signedData)
+        cb(error, hashedMsg, signedData)
       })
     } catch (e) {
       cb(e.message)

src/blockchain/providers/vm.js

@@ -57,7 +57,7 @@ class VMProvider {
     do {
       privateKey = crypto.randomBytes(32)
     } while (!isValidPrivate(privateKey))
-    this.providers.vm._addAccount(privateKey, '0x56BC75E2D63100000')
+    this._addAccount(privateKey, '0x56BC75E2D63100000')
     return cb(null, '0x' + privateToAddress(privateKey).toString('hex'))
   }
 
@@ -78,7 +78,7 @@ class VMProvider {
 
   signMessage (message, account, _passphrase, cb) {
     const personalMsg = ethJSUtil.hashPersonalMessage(Buffer.from(message))
-    const privKey = this.providers.vm.accounts[account].privateKey
+    const privKey = this.accounts[account].privateKey
     try {
       const rsv = ethJSUtil.ecsign(personalMsg, privKey)
       const signedData = ethJSUtil.toRpcSig(rsv.v, rsv.r, rsv.s)