def verify(self, h, sig, pub):
while h > self.N:
h >>= 1
r = self.bytes2int(sig[:self.bytes])
s = self.bytes2int(sig[self.bytes:])
if 0 < r < self.N and 0 < s < self.N:
w = inv(s, self.N)
u1 = (h * w) % self.N
u2 = (r * w) % self.N
x, y = muladdp(self.a, self.b, self.p, self.G, u1, pub, u2)
return r % self.N == x % self.N
return False
def verify(self, h, sig, pub):
while h > self.N:
h >>= 1
r = self.bytes2int(sig[:self.bytes])
s = self.bytes2int(sig[self.bytes:])
if 0 < r < self.N and 0 < s < self.N:
w = inv(s, self.N)
u1 = (h * w) % self.N
u2 = (r * w) % self.N
x, y = muladdp(self.a, self.b, self.p, self.G, u1, pub, u2)
return r % self.N == x % self.N
return False
def verify(h, sig, qk):
'''Verify that 'sig' is a valid signature of h using public key qk'''
bits, q = qk
try:
bits, cn, n, cp, cq, g = get_curve(bits)
except KeyError:
return False
h = truncate(h, cn)
r, s = sig
if 0 < r < n and 0 < s < n:
w = inv(s, n)
u1 = (h * w) % n
u2 = (r * w) % n
x, y = muladdp(cp, cq, cn, g, u1, q, u2)
return r % n == x % n
return False
def verify(h, sig, qk):
'''Verify that 'sig' is a valid signature of h using public key qk'''
bits, q = qk
try:
bits, cn, n, cp, cq, g = get_curve(bits)
except KeyError:
return False
h = truncate(h, cn)
r, s = sig
if 0 < r < n and 0 < s < n:
w = inv(s, n)
u1 = (h * w) % n
u2 = (r * w) % n
x, y = muladdp(cp, cq, cn, g, u1, q, u2)
return r % n == x % n
return False