Updated various parts of the application to improve usability. Started laying some of the ground work for a bulletin board. Added informative emails that keep voters, trustees and organisers updated with the state of an event.

allauthdemo/polls/models.py

@@ -206,6 +206,7 @@ class Ballot(models.Model):
     voter = models.ForeignKey(EmailUser, on_delete=models.CASCADE, related_name="ballots")
     poll = models.ForeignKey(Poll, on_delete=models.CASCADE, related_name="ballots")
     selection = models.CharField(max_length=1)
+    json_str = models.CharField(max_length=10240)
     cast = models.BooleanField(default=False)
 
 

allauthdemo/polls/tasks.py

@@ -68,6 +68,26 @@ def get_email_sign_off():
     return sign_off
 
 
+def email_e_results_ready(event):
+    event_title = event.title
+    email_subject = "Event Results for '" + event_title + "' Have Been Decrypted"
+
+    # Construct the email body. This can be later replaced by a HTML email.
+    email_body = str("")
+    email_body += "Dear Event Organiser,\n\n"
+    email_body += "This email is to inform you that all of the partial decryptions for the event '" + event_title + \
+                  "' have been supplied. These have been used to decrypt the results which are now available.\n\n"
+    email_body += "As an organiser, the event results can be found at the following URL:\n\n"
+    email_body += "http://" + settings.DOMAIN + "/event/" + str(event.pk) + "/results/"
+    email_body += get_email_sign_off()
+
+    # Get all of the organisers for the event and send them an email
+    organisers = event.users_organisers.all()
+
+    for organiser in organisers:
+        organiser.email_user(email_subject, email_body)
+
+
 '''
     Combines all of the voter ballots for a poll option into a single 'CombinedBallot'
 '''
@@ -99,6 +119,11 @@ def combine_ballots(polls):
 
             combined_cipher = add_ciphers(ciphers)
 
+            # If a combined ballot already exists, clear it
+            if CombinedBallot.objects.filter(poll=poll, option=option).exists():
+                CombinedBallot.objects.filter(poll=poll, option=option).delete()
+
+            # Create a combined ballot for this option in the poll
             CombinedBallot.objects.create(poll=poll,
                                           option=option,
                                           cipher_text_c1=combined_cipher['C1'],
@@ -179,6 +204,30 @@ def email_trustees_prep(trustees, event):
         trustee.send_email(email_subject, email_body)
 
 
+'''
+    Task triggered when all trustees have supplied their partial public keys and the event has been prepared
+'''
+@task()
+def email_organisers_next_steps(event):
+    event_title = event.title
+    email_subject = "Event '" + event_title + "' Successfully Prepared by All Trustees"
+
+    email_body = str("")
+    email_body += "Dear Event Organiser,\n\n"
+    email_body += "This email is to inform you that all trustees have supplied their public keys for the event '" \
+                  + event_title + "'. The event is therefore prepared and ready to accept votes when voting opens.\n\n"
+    email_body += "Once voting has ended, you need to visit the following URL to begin the decryption process:\n\n"
+    email_body += "http://" + settings.DOMAIN + "/event/" + str(event.pk) + "/\n\n"
+    email_body += "Once you've accessed the page, simply hit the 'End' button to email all trustees to ask for their " \
+                  "partial decryptions for all polls for this event."
+    email_body += get_email_sign_off()
+
+    # Get the list of organisers that need emailing and email them
+    organisers = event.users_organisers.all()
+
+    for organiser in organisers:
+        organiser.email_user(email_subject, email_body)
+
 '''
     Emails a URL containing an access key for all of the voters for an event 
 '''
@@ -317,3 +366,6 @@ def combine_decryptions_and_tally(event):
         poll.result_json = result
         poll.save()
 
+    # Email the list of organisers to inform them that the results for this event are ready
+    email_e_results_ready(event)
+

allauthdemo/polls/views.py

@@ -18,7 +18,7 @@ from allauthdemo.auth.models import DemoUser
 
 from .tasks import email_trustees_prep, update_EID, generate_combpk, event_ended, create_ballots
 from .tasks import create_ballots_for_poll, email_voters_vote_url, combine_decryptions_and_tally, combine_encrypted_votes
-from .tasks import email_voting_success
+from .tasks import email_voting_success, email_organisers_next_steps
 
 from .utils.EventModelAdaptor import EventModelAdaptor
 
@@ -187,7 +187,8 @@ def event_vote(request, event_id, poll_id):
         cant_vote_reason = "The event either isn't ready for voting or it has expired and therefore you cannot vote."
 
     if request.method == "POST":
-        ballot_json = json.loads(request.POST.get('ballot'))
+        ballot_str = request.POST.get('ballot')
+        ballot_json = json.loads(ballot_str)
         selection = request.POST.get('selection')
         encrypted_votes_json = ballot_json['encryptedVotes']
 
@@ -219,6 +220,7 @@ def event_vote(request, event_id, poll_id):
 
         ballot.cast = True
         ballot.selection = selection
+        ballot.json_str = ballot_str
         ballot.save()
 
         voter = email_key[0].user
@@ -270,6 +272,7 @@ def event_trustee_setup(request, event_id):
                         create_ballots.delay(event)
                         generate_combpk.delay(event)
                         email_voters_vote_url.delay(event.voters.all(), event)
+                        email_organisers_next_steps.delay(event)
 
                     success_msg = 'You have successfully submitted your public key for this event!'
                     messages.add_message(request, messages.SUCCESS, success_msg)
@@ -365,8 +368,14 @@ def event_trustee_decrypt(request, event_id):
                                                                text=part_dec)
 
                 if event.all_part_decs_received():
-                    # TODO: Combine partial decryptions and gen results
+                    # Decrypt the result once all partial decryptions have been received
+                    # This will email all organisers once the results are ready
                     combine_decryptions_and_tally.delay(event)
+                else:
+                    # TODO: Get how many trustees have submitted a partial decryption
+                    # TODO: Then get how many are left to submit their partial decryptions
+                    # TODO: Then email the list of organisers to update them with this information
+                    str("")
 
                 messages.add_message(request, messages.SUCCESS, 'Your partial decryptions have been successfully submitted')
                 return HttpResponseRedirect(reverse("user_home"))

allauthdemo/templates/bases/bootstrap-jquery.html

@@ -76,39 +76,7 @@
 
   //new function
   demosEncrypt.decryptSubmitCiphers = function() {
-    var skString = $('#secret-key').val();
-    if (!skString) {
-      alert("Please enter your secret key");
-    }
-    else {
-      //rebuild our secret key
-      var ctx = new CTX("BN254CX");
-      var skBytes = skString.split(",");
-      var sk = new ctx.BIG.fromBytes(skBytes);
 
-      var inputs = $("form input[type=text]");
-
-      inputs.each(function() { //for each ciphertext to decrypt
-        var ciphertext = {
-          C1: null,
-          C2: null
-        };
-
-        var temp = JSON.parse($(this).val());
-        var c1Bytes = getBytes(temp.C1.split(','));
-        ciphertext.C1 = new ctx.ECP.fromBytes(c1Bytes);
-
-        var c2Bytes = getBytes(temp.C2.split(','));
-        ciphertext.C2 = new ctx.ECP.fromBytes(c2Bytes);
-
-        // Perform partial decryption where the method returns an object containing an ECP()
-        var partial = partDec(sk, ciphertext);
-        
-        var bytes = [];
-        partial.D.toBytes(bytes);
-        $(this).val(bytes.toString());//submit in byte array form
-      });
-    }
   };
 
   //new function

allauthdemo/templates/polls/event_decrypt.html

@@ -16,7 +16,7 @@
   <h2>Trustee Event Decryption for Event '{{ event.title }}'</h2>
     <hr/>
   <div class="panel panel-default">
-      <div class="panel-heading"><strong>Submit your Secret Key as '{{ user_email }}'</strong></div>
+      <div class="panel-heading"><strong>Upload your Secret Key as '{{ user_email }}'</strong></div>
       <div class="panel panel-body">
           <input id="secret-key" name="secret-key" class="textinput textInput form-control" type="text" disabled/>
           <div class="alert alert-info" role="alert" style="margin-top: 0.75em;">
@@ -30,7 +30,7 @@
           <input type="file" id="files_sk_upload" name="file" class="btn-info">
       </div>
       <br/>
-      <div class="panel-heading"><strong>Ciphers</strong></div>
+      <div class="panel-heading"><strong>Encrypted Event Data</strong></div>
       <div class="panel panel-body">
           <form id="cipher-form" method="POST">
               {% csrf_token %}
@@ -48,25 +48,26 @@
                   <br/>
               {% endfor %}
               <button id="decrypt-btn"
-                      onclick="demosEncrypt.decryptSubmitCiphers()"
+
+                      onclick="decryptSubmitCiphers()"
                       class="btn btn-success">
-                      Decrypt & Submit</button>
+                      Send Partial Decryptions</button>
           </form>
       </div>
   </div>
 </div>
 
 <!-- Information Dialog called upon request -->
-<div class="modal fade" id="modalDialog" role="dialog">
+<div class="modal fade" id="modalDialog" role="dialog" tabindex="-1" data-backdrop="static">
-    <div class="modal-dialog">
+    <div class="modal-dialog" role="document">
 
       <!-- Dialog content-->
       <div class="modal-content">
         <div class="modal-header">
-            <button type="button" class="close" data-dismiss="modal">&times;</button>
+            <h4 class="modal-title" style="text-align: center"><strong>Partial Decryption Successfully Received</strong></h4>
-            <h4 class="modal-title" style="text-align: center"><strong>Thank You</strong></h4>
         </div>
         <div class="modal-body">
+            <p>Thank you! You can now close down this page.</p>
         </div>
         <div class="modal-footer">
           <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>

allauthdemo/templates/polls/event_setup.html

@@ -12,7 +12,7 @@
   <h4>Key Generation For: {{ user_email }}</h4>
   <br/>
   <div class="panel panel-default">
-    <div class="panel-heading"><strong>Step 1: Generate Your Secret Key</strong></div>
+    <div class="panel-heading"><strong>Step 1: Generate and Download Your Secret Key</strong></div>
     <div class="panel panel-body">
       <input id="secret-key" class="textinput textInput form-control" type="text"/>
       <input id="event-param" type="text" value="{{event.EID}}" hidden/>

static/js/decrypt_event.js

@@ -1,3 +1,8 @@
+// -------------- Global vars --------------------
+var filesHandleSK = document.getElementById('files_sk_upload');
+var CSRF = $( "input[name='csrfmiddlewaretoken']" ).val();
+
+// -------------- Helper fns --------------------
 //SK checking algorithm - If PK and SK matches, it returns True; otherwise, it returns false.
 // Written by Bingsheng Zhang
 function skCheck(ctx, params, SK, PK) {
@@ -5,6 +10,29 @@ function skCheck(ctx, params, SK, PK) {
     return D.equals(PK)
 }
 
+function csrfSafeMethod(method) {
+    // these HTTP methods do not require CSRF protection
+    return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
+}
+
+function showDialog(titleTxt, bodyTxt) {
+    var modalDialog = $('#modalDialog');
+    var title = modalDialog.find('.modal-title');
+    var body = modalDialog.find('.modal-body');
+
+    title.text(titleTxt);
+    var bodyText = bodyTxt;
+
+    var p = document.createElement("p");
+    p.innerHTML = bodyText;
+    body.empty();
+    body.append( p );
+
+    modalDialog.modal('show');
+}
+
+// -----------------------------------------------
+
 function validateSKFromString(SKStr) {
     // Re-create the SK from the string byte definition
     let ctx = new CTX("BN254CX");
@@ -38,20 +66,44 @@ function validateSKFromString(SKStr) {
     return skCheck(ctx, params, sk, pk);
 }
 
-function showDialog(titleTxt, bodyTxt) {
+function decryptSubmitCiphers() {
-    var modalDialog = $('#modalDialog');
+    var skString = $('#secret-key').val();
-    var title = modalDialog.find('.modal-title');
-    var body = modalDialog.find('.modal-body');
 
-    title.text(titleTxt);
+    if (!skString) {
-    var bodyText = bodyTxt;
+        showDialog('Error', 'You haven\'t supplied your secret key. Please go back and upload this from file.');
+    }
+    else {
+        // Rebuild the trustee's secret key
+        var ctx = new CTX("BN254CX");
+        var skBytes = skString.split(",");
+        var sk = new ctx.BIG.fromBytes(skBytes);
 
-    var p = document.createElement("p");
+        var inputs = $("form input[type=text]");
-    p.innerHTML = bodyText;
-    body.empty();
-    body.append( p );
 
-    modalDialog.modal('show');
+        inputs.each(function() { //for each ciphertext to decrypt
+          let input = $(this);
+          console.log(input.attr('name'));
+
+          var ciphertext = {
+              C1: null,
+              C2: null
+          };
+
+          var temp = JSON.parse(input.val());
+          var c1Bytes = getBytes(temp.C1.split(','));
+          ciphertext.C1 = new ctx.ECP.fromBytes(c1Bytes);
+
+          var c2Bytes = getBytes(temp.C2.split(','));
+          ciphertext.C2 = new ctx.ECP.fromBytes(c2Bytes);
+
+          // Perform partial decryption where the method returns an object containing an ECP()
+          var partial = partDec(sk, ciphertext);
+
+          var bytes = [];
+          partial.D.toBytes(bytes);
+          input.val(bytes.toString());
+        });
+    }
 }
 
 function processFileSKChange(event) {
@@ -85,8 +137,6 @@ function processFileSKChange(event) {
     }
 }
 
-var filesHandleSK = document.getElementById('files_sk_upload');
-
 if(filesHandleSK) {
     filesHandleSK.addEventListener('change', processFileSKChange, false);
 }