-
Notifications
You must be signed in to change notification settings - Fork 0
/
gate.py
181 lines (162 loc) · 5.74 KB
/
gate.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
from Value import Value
class gate:
# input: 2 inputs, 3 triples/ 0's
def __init__(self, input1, input2, output, n_parties, *, wire = None, operation=None, scalar=None):
self.operation = operation
self.n_parties = n_parties
self.w = wire
self.x = input1
self.y = input2
self.z = output
self.scalar = Value(scalar)
def __repr__(self):
return 'operation:' + str(self.operation) + ' x:' + str(self.x) + ' y:' + str(self.y) + ' z:' + str(self.z)
# Assigns v values z = x + y for each party
# Assign e value on output wire
def add(self):
z_v_arr = [None]*self.n_parties
# calculate z_v
for i in range(self.n_parties):
x_v = self.w.v(self.x)[i]
y_v = self.w.v(self.y)[i]
z_v = x_v + y_v
z_v_arr[i] = z_v
# set z_v
self.w.set_v(self.z, z_v_arr)
# calculate z_e
x_e = self.w.e(self.x)
y_e = self.w.e(self.y)
if not x_e:
x_v = sum(self.w.v(self.x))
x_lam = sum(self.w.lambda_val(self.x))
x_e = (x_v + x_lam)
self.w.set_e(self.x, x_e)
if not y_e:
y_v = sum(self.w.v(self.y))
y_lam = sum(self.w.lambda_val(self.y))
y_e = (y_v + y_lam)
self.w.set_e(self.y, y_e)
z_lam = sum(self.w.lambda_val(self.z))
z_v = sum(z_v_arr)
z_e = (z_v + z_lam)
# z_e = x_e + y_e
# set z_e
self.w.set_e(self.z, z_e)
# Assigns v values z = x*y for each party
# assign e value on output wire
# return e share for broadcast
def mult(self, mult_count):
z_v_arr = [None]*self.n_parties
# calculate z_vi
x_e = self.w.e(self.x)
y_e = self.w.e(self.y)
if not x_e:
x_v = sum(self.w.v(self.x))
x_lam = sum(self.w.lambda_val(self.x))
x_e = (x_v + x_lam)
self.w.set_e(self.x, x_e)
if not y_e:
y_v = sum(self.w.v(self.y))
y_lam = sum(self.w.lambda_val(self.y))
y_e = (y_v + y_lam)
self.w.set_e(self.y, y_e)
#Calculate z_e
z_v = sum(self.w.v(self.x)) * sum(self.w.v(self.y))
z_e = z_v + sum(self.w.lambda_val(self.z))
# calculate and set z_eh
z_eh = sum(self.w.lambda_val(self.x)) * sum(self.w.lam_hat(self.y)[str(mult_count)]) + \
sum(self.w.lam_hat(self.z)[str(mult_count)])
self.w.set_e_hat(self.z, z_eh)
for i in range(self.n_parties):
# calculate z_vi
if i == 0:
z_v_share = z_e - self.w.lambda_val(self.z)[i]
else:
z_v_share = Value(0) - self.w.lambda_val(self.z)[i]
z_v_arr[i] = z_v_share
self.w.set_v(self.z, z_v_arr)
# calculate and set z_e
z_e = sum(self.w.v(self.z)) + sum(self.w.lambda_val(self.z))
self.w.set_e(self.z, z_e)
def inv(self):
self.w.set_v(self.z, [None]* self.n_parties)
for i in range(self.n_parties):
if i == 0:
self.w.v(self.z)[i] = self.w.v(self.x)[i] + Value(1)
else:
self.w.v(self.z)[i] = self.w.v(self.x)[i]
self.w.set_e(self.z, self.w.e(self.x))
# performs Scalar mult (new code)
def sca(self):
z_v_arr = [None]*self.n_parties
const = self.scalar
# calculate z_v
for i in range(self.n_parties):
x_v = self.w.v(self.x)[i]
z_v = x_v * const
z_v_arr[i] = z_v
# set z_v
self.w.set_v(self.z, z_v_arr)
# calculate z_e
x_e = self.w.e(self.x)
if not x_e:
x_v = sum(self.w.v(self.x))
x_lam = sum(self.w.lambda_val(self.x))
x_e = (x_v + x_lam)
self.w.set_e(self.x, x_e)
z_e = sum(self.w.v(self.z)) + sum(self.w.lambda_val(self.z))
# set z_e
self.w.set_e(self.z, z_e)
#---VERIFIER SPECIFIC---
# Assigns v values z = x + y for each party
# Assign e value on output wire
def v_add(self):
# calculate z_v
x_v = self.w.v(self.x)[0]
y_v = self.w.v(self.y)[0]
z_v = x_v + y_v
# set z_v
self.w.set_v(self.z, [z_v])
# calculate z_e
x_e = self.w.e(self.x)
y_e = self.w.e(self.y)
z_lam = sum(self.w.lambda_val(self.z))
z_e = (x_e + y_e)
# set z_e
self.w.set_e(self.z, z_e)
#verifier mult function
def v_mult(self, mult_count):
# calculate z_vi
x_e = self.w.e(self.x)
y_e = self.w.e(self.y)
z_v = [(self.w.v(self.x)[0]) * (self.w.v(self.y)[0])]
self.w.set_v(self.z, z_v)
def v_inv(self):
self.w.set_v(self.z, [None]* self.n_parties)
for i in range(self.n_parties):
if i == 0:
self.w.v(self.z)[i] = self.w.v(self.x)[i] + Value(1)
else:
self.w.v(self.z)[i] = self.w.v(self.x)[i]
self.w.set_e(self.z, self.w.e(self.x))
# performs Scalar mult (new code)
def v_sca(self):
z_v_arr = [None]*self.n_parties
const = self.scalar
# calculate z_v
for i in range(self.n_parties):
x_v = self.w.v(self.x)[i]
z_v = x_v * const
z_v_arr[i] = z_v
# set z_v
self.w.set_v(self.z, z_v_arr)
# calculate z_e
x_e = self.w.e(self.x)
if not x_e:
x_v = sum(self.w.v(self.x))
x_lam = sum(self.w.lambda_val(self.x))
x_e = (x_v + x_lam)
self.w.set_e(self.x, x_e)
z_e = sum(self.w.v(self.z)) + sum(self.w.lambda_val(self.z))
# set z_e
self.w.set_e(self.z, z_e)