def main(election_folder):
'''Launch interactive ballot generation'''
print("Welcome into the Ballot Generation Tool")
raw_input("Press <ENTER> to start loading election settings...")
print("Loading...")
filedes = open(election_folder + election_folder[:-7] + ".pub.json", 'r')
settings_raw = filedes.read()
filedes.close()
election_fingerprint = sha256(settings_raw).hexdigest()
print("Election hash (sha256): " + election_fingerprint)
settings = json.loads(settings_raw)
print("Election name: " + settings['human']['name'])
print("Loading successful!")
(F, F2, C, C2) = init_curves()
g_raw = settings['crypto']['g']
h_raw = settings['crypto']['h']
g1_raw = settings['crypto']['g1']
h1_raw = settings['crypto']['h1']
hx = [int(i) for i in h_raw['coord'][0]]
hy = [int(i) for i in h_raw['coord'][1]]
h1x = [int(i) for i in h1_raw['coord'][0]]
h1y = [int(i) for i in h1_raw['coord'][1]]
g_coord = [F(int(g_raw['coord'][0])), F(int(g_raw['coord'][1]))]
g1_coord = [F(int(g1_raw['coord'][0])), F(int(g1_raw['coord'][1]))]
h_coord = [F2(hx), F2(hy)]
h1_coord = [F2(h1x), F2(h1y)]
g = C(g_coord, representation = g_raw['repr'])
g1 = C(g1_coord, representation = g1_raw['repr'])
h = C2(h_coord, representation = h_raw['repr'])
h1 = C2(h1_coord, representation = h1_raw['repr'])
raw_input("Press <ENTER> to continue...")
print("QUESTION: " + settings['human']['question'])
print("ANSWER 0: " + settings['human']['answer_0'])
print("ANSWER 1: " + settings['human']['answer_1'])
vote = -1
while (vote != 0) & (vote != 1) :
try:
v = int(raw_input("Please pick a choice (0 or 1) and press <ENTER>... "))
except(ValueError): # Catch inputs that are not integers
continue
vote = v
print("Encrypting ballot. This may take some time...")
((c0, c1, c2), sigmacc, sigmaor) = ccsva_enc(vote, g, g1, h, h1)
# Encode ballot in JSON
ballot_content = json.dumps({'ciphertext' : {'c0' : c0.json(),
'c1' : c1.json(),
'c2' : c2.json()},
'proofs' :{'sigmacc' : sigmacc,
'sigmaor': sigmaor}},
indent = 4)
print("Ballot encrypted!")
# Compute ballot hash
ballot_fingerprint = sha256(ballot_content).hexdigest()
# Save ballot to a file
filedes = open(election_folder + ballot_fingerprint + ".bal.json", "w")
filedes.write(ballot_content)
filedes.close()
print("Ballot hash (sha256): " + ballot_fingerprint)
print("This ballot is in " + election_folder + ballot_fingerprint \
+ ".pub.json")
sys.exit(0)
def main(settings, ballot, election_folder):
'''Launch single ballot validation'''
print("Welcome into the Ballot Verification Tool")
filedes = open(settings, 'r')
settings_raw = filedes.read()
filedes.close()
filedes2 = open(ballot, 'r')
ballot_raw = filedes2.read()
filedes2.close()
election_fingerprint = sha256(settings_raw).hexdigest()
ballot_fingerprint = sha256(ballot_raw).hexdigest()
print("Election hash (sha256): " + election_fingerprint)
print("Ballot hash (sha256): " + ballot_fingerprint)
settings = json.loads(settings_raw)
ballot = json.loads(ballot_raw)
print("Election name: " + settings['human']['name'])
(F, F2, C, C2) = init_curves()
g_raw = settings['crypto']['g']
h_raw = settings['crypto']['h']
g1_raw = settings['crypto']['g1']
h1_raw = settings['crypto']['h1']
g_coord = [F(g_raw['coord'][0]), F(g_raw['coord'][1])]
h_coord = [F2(h_raw['coord'][0]), F2(h_raw['coord'][1])]
g1_coord = [F(g1_raw['coord'][0]), F(g1_raw['coord'][1])]
h1_coord = [F2(h1_raw['coord'][0]), F2(h1_raw['coord'][1])]
g = C(g_coord, representation = g_raw['repr'])
g1 = C(g1_coord, representation = g1_raw['repr'])
h = C2(h_coord, representation = h_raw['repr'])
h1 = C2(h1_coord, representation = h1_raw['repr'])
c0_raw = ballot['ciphertext']['c0']
c1_raw = ballot['ciphertext']['c1']
c2_raw = ballot['ciphertext']['c2']
c0_coord = [F(c0_raw['coord'][0]), F(c0_raw['coord'][1])]
c1_coord = [F(c1_raw['coord'][0]), F(c1_raw['coord'][1])]
c2_coord = [F2(c2_raw['coord'][0]), F2(c2_raw['coord'][1])]
c0 = C(c0_coord, representation = c0_raw['repr'])
c1 = C(c1_coord, representation = c1_raw['repr'])
c2 = C2(c2_coord, representation = c2_raw['repr'])
sigmacc_raw = ballot['proofs']['sigmacc']
sigmaor_raw = ballot['proofs']['sigmaor']
#FIXME check la conversion de sigma cc et sigma or
sigmacc = sigmacc_raw
sigmaor = sigmaor_raw
if (ccsva_extrip(c0, c1, c2, sigmacc, sigmaor, g, h, g1, h1) == True):
#moves the full ballot to SB
move(ballot, election_folder + "sb/" + ballot_fingerprint + ".bal.json")
#appends the public commitment on PB
#(c2b, sigmaorb) = ccsva_extract_c(c0, c1, c2, sigmacc, sigmaor)
public_ballot = json.dumps({'c2' : c2_raw, #c2b.json(),
'sigmaor': sigmaor_raw}, #sigmaorb.json()},
indent = 4)
filedes = open(election_folder + "pb/" + ballot_fingerprint \
+ ".bal.json", "w")
filedes.write(public_ballot)
filedes.close()
print("Ballot accepted and stored!")
else:
print("Refused ballot!")
exit(1)
exit(0)
