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from ctypes import *
from ctypes.wintypes import LPWSTR, LPCSTR, LPVOID
g_lib = None
def BN256_init():
global g_lib
g_lib = cdll.LoadLibrary("../../bin/bn256.dll")
ret = g_lib.BN256_init()
if ret:
print "ERR BN256_init"
class Fr(Structure):
_fields_ = [("v", c_ulonglong * 4)]
def setInt(self, v):
g_lib.BN256_Fr_setInt(self.v, v)
def setStr(self, s):
ret = g_lib.BN256_Fr_setStr(self.v, c_char_p(s))
if ret:
print("ERR Fr:setStr")
def __str__(self):
svLen = 1024
sv = create_string_buffer('\0' * svLen)
ret = g_lib.BN256_Fr_getStr(sv, svLen, self.v)
if ret:
print("ERR Fr:getStr")
return sv.value
def isZero(self, rhs):
return g_lib.BN256_Fr_isZero(self.v) != 0
def isOne(self, rhs):
return g_lib.BN256_Fr_isOne(self.v) != 0
def __eq__(self, rhs):
return g_lib.BN256_Fr_isEqual(self.v, rhs.v) != 0
def __ne__(self, rhs):
return not(P == Q)
def __add__(self, rhs):
ret = Fr()
g_lib.BN256_Fr_add(ret.v, self.v, rhs.v)
return ret
def __sub__(self, rhs):
ret = Fr()
g_lib.BN256_Fr_sub(ret.v, self.v, rhs.v)
return ret
def __mul__(self, rhs):
ret = Fr()
g_lib.BN256_Fr_mul(ret.v, self.v, rhs.v)
return ret
def __div__(self, rhs):
ret = Fr()
g_lib.BN256_Fr_div(ret.v, self.v, rhs.v)
return ret
def __neg__(self):
ret = Fr()
g_lib.BN256_Fr_neg(ret.v, self.v)
return ret
def Fr_add(z, x, y):
g_lib.BN256_Fr_add(z.v, x.v, y.v)
def Fr_sub(z, x, y):
g_lib.BN256_Fr_sub(z.v, x.v, y.v)
def Fr_mul(z, x, y):
g_lib.BN256_Fr_mul(z.v, x.v, y.v)
def Fr_div(z, x, y):
g_lib.BN256_Fr_div(z.v, x.v, y.v)
BN256_init()
P = Fr()
Q = Fr()
print P == Q
print P != Q
P.setInt(5)
Q.setStr("34982034824")
print Q
R = Fr()
Fr_add(R, P, Q)
print R
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