From 751d86e78592e000ac23db9793aea864cbe76cd0 Mon Sep 17 00:00:00 2001
From: Matias Alejo Garcia <ematiu@gmail.com>
Date: Fri, 25 Apr 2014 17:36:00 -0300
Subject: [PATCH 1/2] symmetric encryption

---
 index.html                     | 10 ++----
 js/models/core/Wallet.js       |  4 +--
 js/models/network/WebRTC.js    | 56 ++++++++++++++++++++++------------
 js/services/controllerUtils.js |  1 -
 4 files changed, 42 insertions(+), 29 deletions(-)

diff --git a/index.html b/index.html
index 1ab1d737c..298df15e3 100644
--- a/index.html
+++ b/index.html
@@ -203,14 +203,10 @@
     </script>
 
     <script type="text/ng-template" id="peer.html">
-      <div class="row">
+      <div class="row"  ng-if="$root.wallet.requiredCopayers > $root.wallet.network.connectedCopayers().length">
         <div class="large-12 columns p70l">
-          <p class="text-info" ng-show="$root.wallet.publicKeyRing.requiredCopayers >$root.wallet.network.connectedCopayers()"> <i class="fi-alert size-28"></i> 
-        </div>
-      </div>
-      <div class="row">
-        <div class="large-12 columns p70l">
-          {{$root.wallet.publicKeyRing.requiredCopayers}} copayers needed for signing transactions
+          <p class="text-info"> <i class="fi-alert size-28"></i> 
+          {{$root.wallet.requiredCopayers}} copayers needed for signing transactions
         </div>
       </div>
       <div class="row">
diff --git a/js/models/core/Wallet.js b/js/models/core/Wallet.js
index 5e6e1672e..a5c7d07de 100644
--- a/js/models/core/Wallet.js
+++ b/js/models/core/Wallet.js
@@ -107,7 +107,7 @@ Wallet.prototype._handleData = function(senderId, data, isInbound) {
 
 Wallet.prototype._handleNetworkChange = function(newCopayerId) {
   if (newCopayerId) {
-    this.log('#### Setting new PEER:', newCopayerId);
+    this.log('#### Setting new COPAYER:', newCopayerId);
     this.sendWalletId(newCopayerId);
     this.emit('peer', this.network.peerFromCopayer(newCopayerId));
   }
@@ -256,7 +256,7 @@ Wallet.prototype.sendWalletReady = function(recipients) {
 };
 
 Wallet.prototype.sendWalletId = function(recipients) {
-  this.log('### SENDING walletId TO:', recipients || 'All', this.walletId);
+  this.log('### SENDING walletId TO:', recipients || 'All', this.id);
 
   this.network.send(recipients, {
     type: 'walletId',
diff --git a/js/models/network/WebRTC.js b/js/models/network/WebRTC.js
index 0176883ba..5c7eda48c 100644
--- a/js/models/network/WebRTC.js
+++ b/js/models/network/WebRTC.js
@@ -154,23 +154,25 @@ Network.prototype._addCopayer = function(copayerId, isInbound) {
 
 Network.prototype._onData = function(data, isInbound, peerId) {
   var sig, payload;
+
   try { 
     var dataObj = JSON.parse(data);
     sig = dataObj.sig;
-    payload= dataObj.payload;
+    payload=  JSON.parse(this._decPayload(dataObj.encPayloadStr));
+console.log('[WebRTC.js.161:payload:]',payload); //TODO
 
   } catch (e) {
     console.log('### ERROR IN DATA: "%s" ', data, isInbound, e); 
     this._deletePeer(peerId);
     return;
-  };
+  }
 
   console.log('### RECEIVED INBOUND?:%s TYPE: %s FROM %s', 
               isInbound, payload.type, peerId, payload); 
 
-  // TODO _func
-  if(payload.type === 'hello') {
-    var thisSig = this._signHMAC(payload, this.copayerId);
+  if(payload.type === 'hello' &&  !this.authenticatedPeers[peerId]) {
+    var payloadStr = JSON.stringify(payload);
+    var thisSig = this._signHMAC(payloadStr, this.copayerId);
     if (thisSig !== sig) {
       console.log('#### Peer sent WRONG hello signature. Closing connection.');
       this._deletePeer(peerId);
@@ -375,24 +377,22 @@ Network.prototype.start = function(opts, openCallback) {
 };
 
 
-Network.prototype._signHMAC = function(payload, copayerId) {
-  var str = JSON.stringify(payload);
-  if (payload.type !=='hello') 
-    throw new Error ('HMAC only for hello messages')
+Network.prototype._signHMAC = function(payloadStr, copayerId) {
+
+console.log('[WebRTC.js.382] SIG HMAC', payloadStr, copayerId); //TODO
   return util.sha512hmac(
-    new Buffer(str), 
+    new Buffer(payloadStr), 
     new Buffer(copayerId,'hex')
   ).toString('hex');
 };
 
-Network.prototype._signECDSA = function(payload) {
+Network.prototype._signECDSA = function(payloadStr) {
   var ret='';
-  var str = JSON.stringify(payload);
   if (!this.signingKey)
     throw new Error ('no key to sign messages :(');
 
   return bitcore.Message.sign(
-    str, 
+    payloadStr, 
     this.signingKey
   ).toString('hex');
 };
@@ -405,14 +405,31 @@ Network.prototype.getPeer = function() {
   return this.peer;
 };
 
-Network.prototype._sendToOne = function(copayerId, payload, sig, cb) {
+
+Network.prototype._encPayload = function(payloadStr, copayerId) {
+  if (!copayerId || !payloadStr)
+    throw new Error('incomplete parameters to _encPayload'+':'+ payloadStr +':'+copayerId);
+
+  //console.log('[WebRTC.js.413] ENC:',payloadStr, copayerId); //TODO
+  // TODO replace with asymmetric encryption (copayerId is the pub key)
+  return CryptoJS.AES.encrypt(payloadStr, copayerId).toString();
+};
+
+Network.prototype._decPayload = function(payloadStr) {
+  // TODO replace with asymmetric encryption (decrypt using this.signingKey);
+  //console.log('[WebRTC.js.413] DEC:',payloadStr, this.copayerId); //TODO
+  return CryptoJS.AES.decrypt(payloadStr, this.copayerId).toString(CryptoJS.enc.Utf8);
+};
+
+Network.prototype._sendToOne = function(copayerId, payloadStr, sig, cb) {
   var peerId = this.peerFromCopayer(copayerId);
   if (peerId !== this.peerId) {
     var dataConn = this.connections[peerId];
+    var encPayloadStr = this._encPayload(payloadStr, copayerId);
     if (dataConn) {
       var str = JSON.stringify({
         sig: sig,
-        payload: payload 
+        encPayloadStr: encPayloadStr,
       });
       dataConn.send(str);
     }
@@ -431,25 +448,26 @@ Network.prototype.send = function(copayerIds, payload, cb) {
   }
 
   var sig;
+  var payloadStr = JSON.stringify(payload);
   if (payload.type === 'hello') {
     var hisId = copayerIds; 
-    sig=this._signHMAC(payload,hisId);
+    sig=this._signHMAC(payloadStr ,hisId);
   }
   else  {
-    sig=this._signECDSA(payload);
+    sig=this._signECDSA(payloadStr);
   }
 
   if (Array.isArray(copayerIds)) {
     var l = copayerIds.length;
     var i = 0;
     copayerIds.forEach(function(copayerId) {
-      self._sendToOne(copayerId, payload, sig, function () {
+      self._sendToOne(copayerId, payloadStr, sig, function () {
         if (++i === l && typeof cb === 'function') cb();
       });
     });
   }
   else if (typeof copayerIds === 'string')
-    self._sendToOne(copayerIds, payload, sig, cb);
+    self._sendToOne(copayerIds, payloadStr, sig, cb);
 };
 
 Network.prototype.connectTo = function(copayerId) {
diff --git a/js/services/controllerUtils.js b/js/services/controllerUtils.js
index ac4267714..a02a99ff2 100644
--- a/js/services/controllerUtils.js
+++ b/js/services/controllerUtils.js
@@ -91,7 +91,6 @@ angular.module('copay.controllerUtils')
         console.log('### SUBSCRIBE TO', addrs[i]);
         Socket.emit('subscribe', addrs[i]);
       }
-      console.log('[controllerUtils.js.64]'); //TODO
       addrs.forEach(function(addr) {
         Socket.on(addr, function(txid) {
           console.log('Received!', txid);

From e46901c3695f3397b00b69b711ecafb4a8db2c66 Mon Sep 17 00:00:00 2001
From: Matias Alejo Garcia <ematiu@gmail.com>
Date: Fri, 25 Apr 2014 17:53:19 -0300
Subject: [PATCH 2/2] add update on network events to txproposals

---
 js/controllers/transactions.js | 12 ++++++++++++
 js/models/core/Wallet.js       |  4 ++--
 js/models/network/WebRTC.js    |  2 ++
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/js/controllers/transactions.js b/js/controllers/transactions.js
index 37cc0dbd1..2d983d396 100644
--- a/js/controllers/transactions.js
+++ b/js/controllers/transactions.js
@@ -6,6 +6,9 @@ angular.module('copay.transactions').controller('TransactionsController',
 
     $scope.title = 'Transactions';
     $scope.loading = false;
+
+
+
     var _updateTxs = function() {
       var w   =$rootScope.wallet;
       if (!w) return;
@@ -99,4 +102,13 @@ angular.module('copay.transactions').controller('TransactionsController',
     };
 
     _updateTxs();
+
+    var w = $rootScope.wallet;
+    if (w) {
+      w.on('txProposalsUpdated', function() {
+        console.log('[transactions.js.108: txProposalsUpdated:]'); //TODO
+        _updateTxs();
+        $rootScope.$digest();    
+      });
+    }
   });
diff --git a/js/models/core/Wallet.js b/js/models/core/Wallet.js
index a5c7d07de..ba30c175f 100644
--- a/js/models/core/Wallet.js
+++ b/js/models/core/Wallet.js
@@ -60,6 +60,7 @@ Wallet.prototype._handlePublicKeyRing = function(senderId, data, isInbound) {
       this._lockIncomming();
     }
   }
+  this.emit('publicKeyRingUpdated', this.publicKeyRing);
   this.store();
 };
 
@@ -76,6 +77,7 @@ Wallet.prototype._handleTxProposals = function(senderId, data, isInbound) {
     recipients = null;
     this.sendTxProposals(recipients);
   }
+  this.emit('txProposalsUpdated', this.txProposals);
   this.store();
 };
 
@@ -242,7 +244,6 @@ Wallet.prototype.sendTxProposals = function(recipients) {
     txProposals: this.txProposals.toObj(),
     walletId: this.id,
   });
-  this.emit('txProposalsUpdated', this.txProposals);
 };
 
 Wallet.prototype.sendWalletReady = function(recipients) {
@@ -274,7 +275,6 @@ Wallet.prototype.sendPublicKeyRing = function(recipients) {
     publicKeyRing: this.publicKeyRing.toObj(),
     walletId: this.id,
   });
-  this.emit('publicKeyRingUpdated', this.publicKeyRing);
 };
 
 
diff --git a/js/models/network/WebRTC.js b/js/models/network/WebRTC.js
index 5c7eda48c..556763ed3 100644
--- a/js/models/network/WebRTC.js
+++ b/js/models/network/WebRTC.js
@@ -201,6 +201,8 @@ console.log('[WebRTC.js.161:payload:]',payload); //TODO
   }
 
   var copayerIdBuf = new Buffer(this.copayerForPeer[peerId],'hex');
+
+console.log('[WebRTC.js.204] sig:', sig); //TODO
   if (!bitcore.Message.verifyWithPubKey( copayerIdBuf, JSON.stringify(payload), 
     new Buffer(sig,'hex'))) {
     console.log('[WebRTC.js.152] SIGNATURE VERIFICATION FAILED!!'); //TODO