def encode(self):
B = int_to_bin(self.srp_B)
g = int_to_bin(self.srp_g)
N = int_to_bin(self.srp_N)
data = struct.pack("<bbb32s", 0, self.error, self.unknownbyte, B)
data = data + struct.pack("<b" + str(len(g)) + "s", len(g), g)
data = data + struct.pack("<b" + str(len(N)) + "s", len(N), N)
data = data + struct.pack("<32s16sb", self.srp_s, self.unknown, self.security)
return data
def calcM2(self):
sha = hashlib.sha1()
sha.update(int_to_bin(self.A))
sha.update(int_to_bin(self.B))
u = bin_to_int(sha.digest())
self.S = pow(self.A * pow(self.v, u, self.N), self.b, self.N)
t = int_to_bin(self.S)
t1 = list()
for i in range(0, 32, 2):
t1.append(t[i])
sha = hashlib.sha1()
sha.update("".join(t1))
vK = list(range(0, 40))
# fill even vK entries [0], [2] etc.
for i in range(0, 20):
vK[i * 2] = sha.digest()[i]
for i in range(0, 16):
t1[i] = t[i * 2 + 1]
sha = hashlib.sha1()
sha.update("".join(t1))
# fill uneven vK entries [1], [3] etc.
for i in range(0, 20):
vK[i * 2 + 1] = sha.digest()[i]
self.K = bin_to_int("".join(vK))
sha = hashlib.sha1()
sha.update(int_to_bin(self.N))
N_sha = sha.digest()
sha = hashlib.sha1()
sha.update(int_to_bin(self.g))
g_sha = sha.digest()
hash = list()
for i in range(0, 20):
hash.append(int_to_bin(bin_to_int(N_sha[i]) ^ bin_to_int(g_sha[i])))
t3 = "".join(hash)
sha = hashlib.sha1()
sha.update(self.username)
t4 = sha.digest()
# calculated M1
sha = hashlib.sha1()
sha.update(t3)
sha.update(t4)
sha.update(self.s)
sha.update(int_to_bin(self.A))
sha.update(int_to_bin(self.B))
sha.update(int_to_bin(self.K))
M = sha.digest()
if bin_to_int(M) == self.M1:
print "Password correct"
# calculate M2
sha = hashlib.sha1()
sha.update(int_to_bin(self.A))
sha.update(M)
sha.update(int_to_bin(self.K))
self.M2 = sha.digest()
sha.update(int_to_bin(self.A))
sha.update(int_to_bin(self.B))
sha.update(int_to_bin(self.K))
M = sha.digest()
if bin_to_int(M) == self.M1:
print "Password correct"
# calculate M2
sha = hashlib.sha1()
sha.update(int_to_bin(self.A))
sha.update(M)
sha.update(int_to_bin(self.K))
self.M2 = sha.digest()
if __name__ == '__main__':
auth = Auth()
auth.username = "******"
auth.A = 32392226636057736569178298570200726764378903089572035718146014074628746469686
auth.B = 39477995497094999596777037250542921589225449793199811220997955316523550273175
auth.v = 17459918643670693210059420188370715679876585876282611281718504289092941609328
auth.N = 62100066509156017342069496140902949863249758336000796928566441170293728648119
auth.b = 5294621419232486107292813785331503792670248187
auth.S = 9730816514788708246368885035945444809585353141117486926833255596885657893262
auth.u = 1338803149889234015817804178382685056276146714235
auth.s = int_to_bin(80214272189838780128605308367486581597145816548177813688284808124909330286083)
auth.calcM2()
def encode(self):
data = struct.pack('<I', 1)
data += int_to_bin(self.seed)
data += int_to_bin(self.seed1)
data += int_to_bin(self.seed2)
return data
def encode(self):
data = struct.pack('<I', 1)
data += int_to_bin(self.seed)
data += int_to_bin(self.seed1)
data += int_to_bin(self.seed2)
return data
