From b5b035655697db4e03317b718a7ce6d6e5e8e44e Mon Sep 17 00:00:00 2001
From: Ben Adida <ben@adida.net>
Date: Thu, 22 Dec 2011 08:21:58 -0800
Subject: [PATCH] Added server randomness for keygen, in case client-side is
not enough
---
helios/templates/election_keygenerator.html | 16 ++++++++++++----
helios/views.py | 2 +-
2 files changed, 13 insertions(+), 5 deletions(-)
diff --git a/helios/templates/election_keygenerator.html b/helios/templates/election_keygenerator.html
index 946533d..33da0dd 100644
--- a/helios/templates/election_keygenerator.html
+++ b/helios/templates/election_keygenerator.html
@@ -27,13 +27,21 @@ function reuse_key(secret_key_text) {
show_pk();
}
+// start collecting some local randomness
+sjcl.random.startCollectors();
+
$(document).ready(function() {
clear_keys();
$('#generator').hide();
- BigInt.setup(function() {
- ELGAMAL_PARAMS = ElGamal.Params.fromJSONObject({{eg_params_json|safe}});
- $('#waiting_message').hide();
- $('#generator').show();
+
+ // get some more server-side randomness for keygen
+ $.getJSON('../../get-randomness', function(result) {
+ sjcl.random.addEntropy(result.randomness);
+ BigInt.setup(function() {
+ ELGAMAL_PARAMS = ElGamal.Params.fromJSONObject({{eg_params_json|safe}});
+ $('#waiting_message').hide();
+ $('#generator').show();
+ });
});
});
diff --git a/helios/views.py b/helios/views.py
index ebdc81f..5721f20 100644
--- a/helios/views.py
+++ b/helios/views.py
@@ -508,7 +508,7 @@ def trustee_upload_pk(request, election, trustee):
##
@json
-@election_view(frozen=True)
+@election_view()
def get_randomness(request, election):
"""
get some randomness to sprinkle into the sjcl entropy pool
--
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