def test_redeem(self):
## run service
checker_service_process = Process(
target=tumbler_contract.run_checker_service)
checker_service_process.start()
time.sleep(0.1)
## create transaction
# init
init_transaction = tumbler.init()
token = init_transaction['transaction']['outputs'][0]
# initialise petition
create_transaction = tumbler.create_tumbler((token, ), None, None, vvk,
auth_sig)
old_list = create_transaction['transaction']['outputs'][1]
# some crypto
# ------------------------------------
hasher = sha256()
hasher.update(dumps(ID).encode('utf8'))
hasher.update(dumps(merchant_addr).encode('utf8'))
m = Bn.from_binary(hasher.digest())
(priv, pub) = elgamal_keygen(bp_params)
(cm, c, proof_s) = prepare_blind_sign(bp_params, m, pub)
enc_sigs = [
blind_sign(bp_params, ski, cm, c, pub, proof_s) for ski in sk
]
(h, enc_epsilon) = zip(*enc_sigs)
sigs = [(h[0], elgamal_dec(bp_params, priv, enc))
for enc in enc_epsilon]
sig = aggregate_th_sign(bp_params, sigs)
sig = randomize(bp_params, sig)
# reveal ID and merchant addr
#print(verify(bp_params, vvk, m, sig))
# ------------------------------------
# add signature to th petition
transaction = tumbler.redeem(
(old_list, ),
None,
(dumps(ID), dumps(merchant_addr)),
sig,
vvk,
)
## submit transaction
response = requests.post('http://127.0.0.1:5000/' +
tumbler_contract.contract_name + '/redeem',
json=transaction_to_solution(transaction))
self.assertTrue(response.json()['success'])
## stop service
checker_service_process.terminate()
checker_service_process.join()
def test_sign(self):
## run service
checker_service_process = Process(
target=petition_contract.run_checker_service)
checker_service_process.start()
time.sleep(0.1)
## create transaction
# init
init_transaction = petition.init()
token = init_transaction['transaction']['outputs'][0]
# initialise petition
create_petition_transaction = petition.create_petition(
(token, ), None, None, UUID, options, priv_owner, pub_owner, vvk)
old_petition = create_petition_transaction['transaction']['outputs'][1]
old_list = create_petition_transaction['transaction']['outputs'][2]
# some crypto
# ------------------------------------
(priv_signer, pub_signer) = elgamal_keygen(bp_params)
m = priv_signer
(cm, c, proof_s) = prepare_blind_sign(bp_params, m, pub_signer)
enc_sigs = [
blind_sign(bp_params, ski, cm, c, pub_signer, proof_s)
for ski in sk
]
(h, enc_epsilon) = zip(*enc_sigs)
sigs = [(h[0], elgamal_dec(bp_params, priv_signer, enc))
for enc in enc_epsilon]
sig = aggregate_th_sign(bp_params, sigs)
sig = randomize(bp_params, sig)
(kappa, nu, proof_v) = show_coconut_petition(bp_params, vvk, m, UUID)
#print(coconut_petition_verify(bp_params, vvk, kappa, sig, proof_v, UUID, nu))
# ------------------------------------
# add signature to th petition
start = time.time()
transaction = petition.sign((old_petition, old_list), None,
(dumps([1, 0]), ), priv_signer, sig, vvk)
end = time.time()
print((end - start) * 1000)
## submit transaction
response = requests.post('http://127.0.0.1:5000/' +
petition_contract.contract_name + '/sign',
json=transaction_to_solution(transaction))
self.assertTrue(response.json()['success'])
## stop service
checker_service_process.terminate()
checker_service_process.join()
def generate_signature():
(priv_key, pub_key) = elgamal_keygen(bp_params)
m = priv_key
(cm, c, proof_s) = prepare_blind_sign(bp_params, m, pub_key)
enc_sigs = [
blind_sign(bp_params, ski, cm, c, pub_key, proof_s) for ski in sk
]
(h, enc_epsilon) = zip(*enc_sigs)
sigs = [(h[0], elgamal_dec(bp_params, priv_key, enc))
for enc in enc_epsilon]
sig = aggregate_th_sign(bp_params, sigs)
sig = randomize(bp_params, sig)
return priv_key, sig
from petlib.bn import Bn
# coconut
from chainspacecontract.examples.coconut_util import pack, unpackG1, unpackG2
from chainspacecontract.examples.coconut_lib import setup, elgamal_keygen, mix_ttp_th_keygen
from chainspacecontract.examples.coconut_lib import elgamal_dec, aggregate_th_sign, randomize, sign, verify
from chainspacecontract.examples.coconut_lib import verify, show_mix_sign, mix_verify, prepare_mix_sign, mix_sign
from bplib.bp import BpGroup, G2Elem
# crypto parameters
q = 1 # max number of messages
t, n = 2, 2 # threshold and total numbero of authorities
callback = 'hello.init' # id of the callback contract
params = setup(q) # system's parameters
clear_m = [] # messages for plaintext signature
hidden_m = [1] # messages for blind signature
(priv, pub) = elgamal_keygen(params) # user's key pair
(sk, vk, vvk) = mix_ttp_th_keygen(params, t, n, q) # signers keys
# some crypto
# ------------------------------------
packed_vvk = (pack(vvk[0]), pack(vvk[1]), [pack(vvk[2][i]) for i in range(q)])
instance = {
'type': 'CoCoInstance',
'q': q,
't': t,
'n': n,
'callback': callback,
'verifier': packed_vvk
}
hasher = sha256()
hasher.update(dumps(instance).encode('utf8'))
def main():
petition.contract._populate_empty_checkers()
print "operation\t\tmean (ms)\t\tsd (ms)\t\truns"
# == init ===============
init_tx = petition.init()
# == create_petition ===============
# gen
times = []
for i in range(RUNS):
start_time = time.time()
petition.create_petition(
(init_tx['transaction']['outputs'][0],),
None,
None,
UUID,
options,
priv_owner,
pub_owner,
vvk
)
end_time = time.time()
times.append((end_time-start_time)*1000)
mean = numpy.mean(times)
sd = numpy.std(times)
print "[g] create_petition tx\t{:.10f}\t\t{:.10f}\t{}".format(mean, sd, RUNS)
# check
create_petition_tx = petition.create_petition(
(init_tx['transaction']['outputs'][0],),
None,
None,
UUID,
options,
priv_owner,
pub_owner,
vvk
)
solution = transaction_to_solution(create_petition_tx)
times = []
for i in range(RUNS):
start_time = time.time()
petition.contract.checkers['create_petition'](
solution['inputs'],
solution['referenceInputs'],
solution['parameters'],
solution['outputs'],
solution['returns'],
solution['dependencies'],
)
end_time = time.time()
times.append((end_time-start_time)*1000)
mean = numpy.mean(times)
sd = numpy.std(times)
print "[c] create_petition tx\t{:.10f}\t\t{:.10f}\t{}".format(mean, sd, RUNS)
# == sign ===============
# gen
old_petition = create_petition_tx['transaction']['outputs'][1]
old_list = create_petition_tx['transaction']['outputs'][2]
# some crypto
# ------------------------------------
(priv_signer, pub_signer) = elgamal_keygen(bp_params)
m = priv_signer
(cm, c, proof_s) = prepare_blind_sign(bp_params, m, pub_signer)
enc_sigs = [blind_sign(bp_params, ski, cm, c, pub_signer, proof_s) for ski in sk]
(h, enc_epsilon) = zip(*enc_sigs)
sigs = [(h[0], elgamal_dec(bp_params, priv_signer, enc)) for enc in enc_epsilon]
sig = aggregate_th_sign(bp_params, sigs)
sig = randomize(bp_params, sig)
(kappa, nu, proof_v) = show_coconut_petition(bp_params, vvk, m, UUID)
#print(coconut_petition_verify(bp_params, vvk, kappa, sig, proof_v, UUID, nu))
# ------------------------------------
times = []
for i in range(RUNS):
start_time = time.time()
petition.sign(
(old_petition, old_list),
None,
(dumps([1, 0]),),
priv_signer,
sig,
vvk
)
end_time = time.time()
times.append((end_time-start_time)*1000)
mean = numpy.mean(times)
sd = numpy.std(times)
print "[g] sign tx\t\t{:.10f}\t\t{:.10f}\t{}".format(mean, sd, RUNS)
# check
sign_tx = petition.sign(
(old_petition, old_list),
None,
(dumps([1, 0]),),
priv_signer,
sig,
vvk
)
solution = transaction_to_solution(sign_tx)
times = []
for i in range(RUNS):
start_time = time.time()
petition.contract.checkers['sign'](
solution['inputs'],
solution['referenceInputs'],
solution['parameters'],
solution['outputs'],
solution['returns'],
solution['dependencies'],
)
end_time = time.time()
times.append((end_time-start_time)*1000)
mean = numpy.mean(times)
sd = numpy.std(times)
print "[c] sign tx\t\t{:.10f}\t\t{:.10f}\t{}".format(mean, sd, RUNS)
'''
def main():
tumbler.contract._populate_empty_checkers()
print "operation\t\tmean (ms)\t\tsd (ms)\t\truns"
# == init ===============
init_tx = tumbler.init()
# == create_tumbler ===============
# gen
times = []
for i in range(RUNS):
start_time = time.time()
tumbler.create_tumbler(
(init_tx['transaction']['outputs'][0],),
None,
None,
vvk,
auth_sig
)
end_time = time.time()
times.append((end_time-start_time)*1000)
mean = numpy.mean(times)
sd = numpy.std(times)
print "[g] create_tumbler tx\t{:.10f}\t\t{:.10f}\t{}".format(mean, sd, RUNS)
# check
create_tumbler_tx = tumbler.create_tumbler(
(init_tx['transaction']['outputs'][0],),
None,
None,
vvk,
auth_sig
)
solution = transaction_to_solution(create_tumbler_tx)
times = []
for i in range(RUNS):
start_time = time.time()
tumbler.contract.checkers['create_tumbler'](
solution['inputs'],
solution['referenceInputs'],
solution['parameters'],
solution['outputs'],
solution['returns'],
solution['dependencies'],
)
end_time = time.time()
times.append((end_time-start_time)*1000)
mean = numpy.mean(times)
sd = numpy.std(times)
print "[c] create_tumbler tx\t{:.10f}\t\t{:.10f}\t{}".format(mean, sd, RUNS)
# == redeem ===============
# gen
# some crypto
# ------------------------------------
hasher = sha256()
hasher.update(dumps(ID).encode('utf8'))
hasher.update(dumps(merchant_addr).encode('utf8'))
m = Bn.from_binary(hasher.digest())
(priv, pub) = elgamal_keygen(bp_params)
(cm, c, proof_s) = prepare_blind_sign(bp_params, m, pub)
enc_sigs = [blind_sign(bp_params, ski, cm, c, pub, proof_s) for ski in sk]
(h, enc_epsilon) = zip(*enc_sigs)
sigs = [(h[0], elgamal_dec(bp_params, priv, enc)) for enc in enc_epsilon]
sig = aggregate_th_sign(bp_params, sigs)
sig = randomize(bp_params, sig)
# reveal ID and merchant addr
#print(verify(bp_params, vvk, m, sig))
# ------------------------------------
times = []
for i in range(RUNS):
start_time = time.time()
tumbler.redeem(
(create_tumbler_tx['transaction']['outputs'][1],),
None,
(dumps(ID),dumps(merchant_addr)),
sig,
vvk,
)
end_time = time.time()
times.append((end_time-start_time)*1000)
mean = numpy.mean(times)
sd = numpy.std(times)
print "[g] redeem tx\t\t{:.10f}\t\t{:.10f}\t{}".format(mean, sd, RUNS)
# check
redeem_tx = tumbler.redeem(
(create_tumbler_tx['transaction']['outputs'][1],),
None,
(dumps(ID),dumps(merchant_addr)),
sig,
vvk,
)
solution = transaction_to_solution(redeem_tx)
times = []
for i in range(RUNS):
start_time = time.time()
tumbler.contract.checkers['redeem'](
solution['inputs'],
solution['referenceInputs'],
solution['parameters'],
solution['outputs'],
solution['returns'],
solution['dependencies'],
)
end_time = time.time()
times.append((end_time-start_time)*1000)
mean = numpy.mean(times)
sd = numpy.std(times)
print "[c] redeem tx\t\t{:.10f}\t\t{:.10f}\t{}".format(mean, sd, RUNS)
'''