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Commit 478f4a0c authored by Aditya Damodaran's avatar Aditya Damodaran
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PEP-8

parent 4a4dda17
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protocol.py
View file @ 478f4a0c
......@@ -435,8 +435,9 @@ class Reader:
)
blinded_instance.append_subinstances(temp_blinded_instance_record)
index = index + 1
return dict_from_class(blinded_instance), dict_from_class(
blinded_witness
return (
dict_from_class(blinded_instance),
dict_from_class(blinded_witness),
)
def test_witness_update(self, sid, p, i_list):
......
uuhd/functionalities.py
View file @ 478f4a0c
......@@ -14,9 +14,15 @@ from charm.toolbox.pairinggroup import ZR, G1, G2, pair
from charm.toolbox.integergroup import RSAGroup
from charm.core.math.integer import integer
from uuhd.sigmaprotocol import SigmaProtocol, get_record_by_index
from uuhd.jsonobjects import dict_from_class
from uuhd.primitives import PaillierEncryption, SHA256, DSA, IntegerCommitment
from uuhd.sigmaprotocol import (
SigmaProtocol,
get_record_by_index,
num_to_str,
sign_u,
)
class WeakReference:
......@@ -201,11 +207,7 @@ class FZK:
) * (sigma_protocol.dsa_keys[0]["y"] ** gd)
dsa_c = (gd ** dsa_b) * (tag ** integer(hash_y))
r = {
"rj": random_witness,
"rco": random_ic,
"wco": witness_ic,
}
r = {"rj": random_witness, "rco": random_ic, "wco": witness_ic}
s_j, hashes_j, hash_c = sigma_protocol.prover_step_2(
dict_from_class(random_witness),
......@@ -259,15 +261,6 @@ class FZK_RD:
self.f_nym = f_nym
self.keylength = keylength
def sign_u(self, i, g, x):
return g ** ((x + i) ** -1)
def num_to_str(self, num, length):
str_num = str(num)
if len(str_num) < length:
str_num = "0" * (length - len(str_num)) + str_num
return str_num
def prove(self, sid, witness_rd, instance_rd, id, par_c, group):
[v_n, open_v_n] = witness_rd["Vn"], witness_rd["openVn"]
......@@ -288,127 +281,9 @@ class FZK_RD:
(self.public_key, self.secret_key) = self.paillier_encryption.keygen(
self.keylength
)
# Verifier picks x rand
x = group.random(ZR)
y = ped_h ** x
u_list = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
a_i = [
self.sign_u(0, ped_g, x),
self.sign_u(1, ped_g, x),
self.sign_u(2, ped_g, x),
self.sign_u(3, ped_g, x),
self.sign_u(4, ped_g, x),
self.sign_u(5, ped_g, x),
self.sign_u(6, ped_g, x),
self.sign_u(7, ped_g, x),
self.sign_u(8, ped_g, x),
self.sign_u(9, ped_g, x),
]
str_num = self.num_to_str(v_n - points, 4)
v_0 = group.random(ZR)
v_1 = group.random(ZR)
v_2 = group.random(ZR)
v_3 = group.random(ZR)
v_j = [
a_i[int(str_num[3])] ** v_0,
a_i[int(str_num[2])] ** v_1,
a_i[int(str_num[1])] ** v_2,
a_i[int(str_num[0])] ** v_3,
]
s_0 = group.random(ZR)
t_0 = group.random(ZR)
m_0 = group.random(ZR)
s_1 = group.random(ZR)
t_1 = group.random(ZR)
m_1 = group.random(ZR)
s_2 = group.random(ZR)
t_2 = group.random(ZR)
m_2 = group.random(ZR)
s_3 = group.random(ZR)
t_3 = group.random(ZR)
m_3 = group.random(ZR)
gt = group.random(G2)
a_0 = (pair(v_j[0], gt) ** (-s_0)) * (pair(ped_g, gt) ** t_0)
a_1 = (pair(v_j[1], gt) ** (-s_1)) * (pair(ped_g, gt) ** t_1)
a_2 = (pair(v_j[2], gt) ** (-s_2)) * (pair(ped_g, gt) ** t_2)
a_3 = (pair(v_j[3], gt) ** (-s_3)) * (pair(ped_g, gt) ** t_3)
d = (
((ped_g ** ((10 ** 0) * s_0)) * (ped_h ** m_0))
* ((ped_g ** ((10 ** 1) * s_1)) * (ped_h ** m_1))
* ((ped_g ** ((10 ** 2) * s_2)) * (ped_h ** m_2))
* ((ped_g ** ((10 ** 3) * s_3)) * (ped_h ** m_3))
SigmaProtocol.range_proof(
(v_n - points), com_v_n, open_v_n, points, ped_g, ped_h, group
)
# Verifier
c = group.random(ZR)
# Prover
z_s_0 = s_0 - (int(str_num[3]) * c)
z_v_0 = t_0 - (v_0 * c)
z_r_0 = m_0 - (open_v_n * c)
z_s_1 = s_1 - (int(str_num[2]) * c)
z_v_1 = t_1 - (v_1 * c)
z_r_1 = m_1 - (open_v_n * c)
z_s_2 = s_2 - (int(str_num[1]) * c)
z_v_2 = t_2 - (v_2 * c)
z_r_2 = m_2 - (open_v_n * c)
z_s_3 = s_3 - (int(str_num[0]) * c)
z_v_3 = t_3 - (v_3 * c)
z_r_3 = m_3 - (open_v_n * c)
y_2 = gt ** x
z_r = (m_0 + m_1 + m_2 + m_3) - (open_v_n * c)
if not (
a_0
== (pair(v_j[0], y_2) ** c)
* (pair(v_j[0], gt) ** -z_s_0)
* (pair(ped_g, gt) ** z_v_0)
):
print("Abort: (FZK_RD) A0 check failed.")
if not (
a_1
== (pair(v_j[1], y_2) ** c)
* (pair(v_j[1], gt) ** -z_s_1)
* (pair(ped_g, gt) ** z_v_1)
):
print("Abort: (FZK_RD) A1 check failed.")
if not (
a_2
== (pair(v_j[2], y_2) ** c)
* (pair(v_j[2], gt) ** -z_s_2)
* (pair(ped_g, gt) ** z_v_2)
):
print("Abort: (FZK_RD) A2 check failed.")
if not (
a_3
== (pair(v_j[3], y_2) ** c)
* (pair(v_j[3], gt) ** -z_s_3)
* (pair(ped_g, gt) ** z_v_3)
):
print("Abort: (FZK_RD) A3 check failed.")
if not (
d
== (com_v_n ** c)
* (~(ped_g ** (points * c)))
* (ped_h ** (z_r))
* ((ped_g ** ((10 ** 0) * z_s_0)))
* ((ped_g ** ((10 ** 1) * z_s_1)))
* ((ped_g ** ((10 ** 2) * z_s_2)))
* ((ped_g ** ((10 ** 3) * z_s_3)))
):
print("Abort: (FZK_RD) D check failed.")
v_n_c = self.paillier_encryption.encrypt(
self.public_key, integer(((v_n)))
)
......@@ -530,26 +405,10 @@ class FZK_PR3:
self.f_nym = f_nym
self.keylength = keylength
def get_record_by_index(self, list, index):
for item in list:
if item["i"] == index:
return item
def sign_u(self, i, g, x):
return g ** ((x + i) ** -1)
def num_to_str(self, num, length):
str_num = str(num)
if len(str_num) < length:
str_num = "0" * (length - len(str_num)) + str_num
return str_num
def prove(
self, sid, witness_pr, instance_pr, id, start, end, par_c, group
):
# COM CHECKS
ped_g = par_c["g"]
ped_h = par_c["h"]
g = group.random(G1)
......@@ -660,11 +519,9 @@ class FZK_PR3:
"penco": paillier_ciphertext_open_v,
}
)
paillier_ciphertext_random_open_v = (
self.paillier_encryption.encrypt(
self.public_key,
integer(SHA256(bytes(str(random_opening_v), "utf-8"))),
)
paillier_ciphertext_random_open_v = self.paillier_encryption.encrypt(
self.public_key,
integer(SHA256(bytes(str(random_opening_v), "utf-8"))),
)
paillier_ciphertext_random_v = self.paillier_encryption.encrypt(
self.public_key, integer(SHA256(bytes(str(random_v), "utf-8")))
......@@ -838,251 +695,25 @@ class FZK_PR3:
com_i = self.get_record_by_index(instance_pr, witness_record["i"])[
"comi"
]
# Verifier picks x rand
x = group.random(ZR)
y = ped_h ** x
u_list = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
a_i = [
self.sign_u(0, ped_g, x),
self.sign_u(1, ped_g, x),
self.sign_u(2, ped_g, x),
self.sign_u(3, ped_g, x),
self.sign_u(4, ped_g, x),
self.sign_u(5, ped_g, x),
self.sign_u(6, ped_g, x),
self.sign_u(7, ped_g, x),
self.sign_u(8, ped_g, x),
self.sign_u(9, ped_g, x),
]
str_num = self.num_to_str((witness_record["i"] - end) + 1000, 4)
# ul = 1000?
# Verifier picks vj rand
v_0 = group.random(ZR)
v_1 = group.random(ZR)
v_2 = group.random(ZR)
v_3 = group.random(ZR)
v_j = [
a_i[int(str_num[3])] ** v_0,
a_i[int(str_num[2])] ** v_1,
a_i[int(str_num[1])] ** v_2,
a_i[int(str_num[0])] ** v_3,
]
# v_j = [a_i[0]**v0,a_i[0]**v1,a_i[1]**v2,a_i[0]**v3]
# Prover
s_0 = group.random(ZR)
t_0 = group.random(ZR)
m_0 = group.random(ZR)
s_1 = group.random(ZR)
t_1 = group.random(ZR)
m_1 = group.random(ZR)
s_2 = group.random(ZR)
t_2 = group.random(ZR)
m_2 = group.random(ZR)
s_3 = group.random(ZR)
t_3 = group.random(ZR)
m_3 = group.random(ZR)
gt = group.random(G2)
a_0 = (pair(v_j[0], gt) ** (-s_0)) * (pair(ped_g, gt) ** t_0)
a_1 = (pair(v_j[1], gt) ** (-s_1)) * (pair(ped_g, gt) ** t_1)
a_2 = (pair(v_j[2], gt) ** (-s_2)) * (pair(ped_g, gt) ** t_2)
a_3 = (pair(v_j[3], gt) ** (-s_3)) * (pair(ped_g, gt) ** t_3)
d = (
((ped_g ** ((10 ** 0) * s_0)) * (ped_h ** m_0))
* ((ped_g ** ((10 ** 1) * s_1)) * (ped_h ** m_1))
* ((ped_g ** ((10 ** 2) * s_2)) * (ped_h ** m_2))
* ((ped_g ** ((10 ** 3) * s_3)) * (ped_h ** m_3))
SigmaProtocol.range_proof(
(witness_record["i"] - end) + 1000,
com_i,
open_i,
end - 1000,
ped_g,
ped_h,
group,
)
SigmaProtocol.range_proof(
(witness_record["i"] - start),
com_i,
open_i,
start,
ped_g,
ped_h,
group,
)
# Ver
c = group.random(ZR)
# Prov
z_s_0 = s_0 - (int(str_num[3]) * c)
z_v_0 = t_0 - (v_0 * c)
z_r_0 = m_0 - (open_i * c)
z_s_1 = s_1 - (int(str_num[2]) * c)
z_v_1 = t_1 - (v_1 * c)
z_r_1 = m_1 - (open_i * c)
z_s_2 = s_2 - (int(str_num[1]) * c)
z_v_2 = t_2 - (v_2 * c)
z_r_2 = m_2 - (open_i * c)
z_s_3 = s_3 - (int(str_num[0]) * c)
z_v_3 = t_3 - (v_3 * c)
z_r_3 = m_3 - (open_i * c)
y = gt ** x
z_r = (m_0 + m_1 + m_2 + m_3) - (open_i * c)
if not (
a_0
== (pair(v_j[0], y) ** c)
* (pair(v_j[0], gt) ** -z_s_0)
* (pair(ped_g, gt) ** z_v_0)
):
print("Abort: (FZK_PR) A0 check failed.")
if not (
a_1
== (pair(v_j[1], y) ** c)
* (pair(v_j[1], gt) ** -z_s_1)
* (pair(ped_g, gt) ** z_v_1)
):
print("Abort: (FZK_PR) A1 check failed.")
if not (
a_2
== (pair(v_j[2], y) ** c)
* (pair(v_j[2], gt) ** -z_s_2)
* (pair(ped_g, gt) ** z_v_2)
):
print("Abort: (FZK_PR) A2 check failed.")
if not (
a_3
== (pair(v_j[3], y) ** c)
* (pair(v_j[3], gt) ** -z_s_3)
* (pair(ped_g, gt) ** z_v_3)
):
print("Abort: (FZK_PR) A3 check failed.")
if not (
d
== (com_i ** c)
* (~(ped_g ** ((end - 1000) * c)))
* (ped_h ** (z_r))
* ((ped_g ** ((10 ** 0) * z_s_0)))
* ((ped_g ** ((10 ** 1) * z_s_1)))
* ((ped_g ** ((10 ** 2) * z_s_2)))
* ((ped_g ** ((10 ** 3) * z_s_3)))
):
print("Abort: (FZK_PR) D check failed.")
# Verifier picks x rand
x = group.random(ZR)
y = ped_h ** x
u_list = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
a_i = [
self.sign_u(0, ped_g, x),
self.sign_u(1, ped_g, x),
self.sign_u(2, ped_g, x),
self.sign_u(3, ped_g, x),
self.sign_u(4, ped_g, x),
self.sign_u(5, ped_g, x),
self.sign_u(6, ped_g, x),
self.sign_u(7, ped_g, x),
self.sign_u(8, ped_g, x),
self.sign_u(9, ped_g, x),
]
# print('RSig size: '+str(sys.getsizeof(a_i)))
str_num = self.num_to_str(
(witness_record["i"] - start), 4
) # ul = 1000?
# Verifier picks vj rand
v_0 = group.random(ZR)
v_1 = group.random(ZR)
v_2 = group.random(ZR)
v_3 = group.random(ZR)
v_j = [
a_i[int(str_num[3])] ** v_0,
a_i[int(str_num[2])] ** v_1,
a_i[int(str_num[1])] ** v_2,
a_i[int(str_num[0])] ** v_3,
]
# v_j = [a_i[0]**v0,a_i[0]**v1,a_i[1]**v2,a_i[0]**v3]
# Prover
s_0 = group.random(ZR)
t_0 = group.random(ZR)
m_0 = group.random(ZR)
s_1 = group.random(ZR)
t_1 = group.random(ZR)
m_1 = group.random(ZR)
s_2 = group.random(ZR)
t_2 = group.random(ZR)
m_2 = group.random(ZR)
s_3 = group.random(ZR)
t_3 = group.random(ZR)
m_3 = group.random(ZR)
gt = group.random(G2)
a_0 = (pair(v_j[0], gt) ** (-s_0)) * (pair(ped_g, gt) ** t_0)
a_1 = (pair(v_j[1], gt) ** (-s_1)) * (pair(ped_g, gt) ** t_1)
a_2 = (pair(v_j[2], gt) ** (-s_2)) * (pair(ped_g, gt) ** t_2)
a_3 = (pair(v_j[3], gt) ** (-s_3)) * (pair(ped_g, gt) ** t_3)
d = (
((ped_g ** ((10 ** 0) * s_0)) * (ped_h ** m_0))
* ((ped_g ** ((10 ** 1) * s_1)) * (ped_h ** m_1))
* ((ped_g ** ((10 ** 2) * s_2)) * (ped_h ** m_2))
* ((ped_g ** ((10 ** 3) * s_3)) * (ped_h ** m_3))
)
# Ver
c = group.random(ZR)
# Prov
z_s_0 = s_0 - (int(str_num[3]) * c)
z_v_0 = t_0 - (v_0 * c)
z_r_0 = m_0 - (open_i * c)
z_s_1 = s_1 - (int(str_num[2]) * c)
z_v_1 = t_1 - (v_1 * c)
z_r_1 = m_1 - (open_i * c)
z_s_2 = s_2 - (int(str_num[1]) * c)
z_v_2 = t_2 - (v_2 * c)
z_r_2 = m_2 - (open_i * c)
z_s_3 = s_3 - (int(str_num[0]) * c)
z_v_3 = t_3 - (v_3 * c)
z_r_3 = m_3 - (open_i * c)
y = gt ** x
z_r = (m_0 + m_1 + m_2 + m_3) - (open_i * c)
if not (
a_0
== (pair(v_j[0], y) ** c)
* (pair(v_j[0], gt) ** -z_s_0)
* (pair(ped_g, gt) ** z_v_0)
):
print("Abort: (FZK_PR) A0 check failed.")
if not (
a_1
== (pair(v_j[1], y) ** c)
* (pair(v_j[1], gt) ** -z_s_1)
* (pair(ped_g, gt) ** z_v_1)
):
print("Abort: (FZK_PR) A1 check failed.")
if not (
a_2
== (pair(v_j[2], y) ** c)
* (pair(v_j[2], gt) ** -z_s_2)
* (pair(ped_g, gt) ** z_v_2)
):
print("Abort: (FZK_PR) A2 check failed.")
if not (
a_3
== (pair(v_j[3], y) ** c)
* (pair(v_j[3], gt) ** -z_s_3)
* (pair(ped_g, gt) ** z_v_3)
):
print("Abort: (FZK_PR) A3 check failed.")
if not (
d
== (com_i ** c)
* (~(ped_g ** ((start) * c)))
* (ped_h ** (z_r))
* ((ped_g ** ((10 ** 0) * z_s_0)))
* ((ped_g ** ((10 ** 1) * z_s_1)))
* ((ped_g ** ((10 ** 2) * z_s_2)))
* ((ped_g ** ((10 ** 3) * z_s_3)))
):
print("Abort: (FZK_PR) D check failed.")
self.f_nym.insert(sid, id, id)
self.l_store.append({"sid": sid, "p": id, "Tk": id})
return instance_pr, result
......
uuhd/sigmaprotocol.py
View file @ 478f4a0c
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