def sigma2(self, m_list):
s = self.sigma1(m_list)
ones = [0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff]
teta1 = s + m_list[48:64]
teta2 = xor(s, ones) + m_list[32:48]
u1 = m_list[0:16]
u2 = m_list[16:32]
my_belt = belt.belt(teta1)
tmp = xor(my_belt.encryption(u1), u1)
my_belt2 = belt.belt(teta2)
tm2 = xor(my_belt2.encryption(u2), u2)
return tmp + tm2
def sigma2(self, m_list):
s = self.sigma1(m_list)
ones = [
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff
]
teta1 = s + m_list[48:64]
teta2 = xor(s, ones) + m_list[32:48]
u1 = m_list[0:16]
u2 = m_list[16:32]
my_belt = belt.belt(teta1)
tmp = xor(my_belt.encryption(u1), u1)
my_belt2 = belt.belt(teta2)
tm2 = xor(my_belt2.encryption(u2), u2)
return tmp + tm2
def test_belt_decr():
c = list(binascii.unhexlify('E12BDC1AE28257EC703FCCF095EE8DF1'))
key2 = list(
binascii.unhexlify(
'92BD9B1CE5D141015445FBC95E4D0EF2682080AA227D642F2687F93490405511')
)
belt2 = belt(key2)
d1 = binascii.hexlify(bytearray(belt2.decryption(c)))
assert d1 == b'0dc5300600cab840b38448e5e993f421'
def test_belt_encr():
key = list(
binascii.unhexlify(
'E9DEE72C8F0C0FA62DDB49F46F73964706075316ED247A3739CBA38303A98BF6')
)
belt1 = belt(key)
m = list(binascii.unhexlify('B194BAC80A08F53B366D008E584A5DE4'))
c1 = binascii.hexlify(bytearray(belt1.encryption(m)))
assert c1 == b'69cca1c93557c9e3d66bc3e0fa88fa6e'
def test_belt_decr(self):
c = list(binascii.unhexlify('E12BDC1AE28257EC703FCCF095EE8DF1'))
key2 = list(binascii.unhexlify('92BD9B1CE5D141015445FBC95E4D0EF2682080AA227D642F2687F93490405511'))
belt2 = belt(key2)
d1 = binascii.hexlify(bytearray(belt2.decryption(c)))
self.assertEqual(d1, b'0dc5300600cab840b38448e5e993f421')
def test_belt_encr(self):
key = list(binascii.unhexlify('E9DEE72C8F0C0FA62DDB49F46F73964706075316ED247A3739CBA38303A98BF6'))
belt1 = belt(key)
m = list(binascii.unhexlify('B194BAC80A08F53B366D008E584A5DE4'))
c1 = binascii.hexlify(bytearray(belt1.encryption(m)))
self.assertEqual(c1, b'69cca1c93557c9e3d66bc3e0fa88fa6e')
def sigma1(self, m_list):
my_belt = belt.belt(m_list[:32])
m = xor(m_list[32:48], m_list[48:64])
sigma1 = xor(my_belt.encryption(m), m_list[32:48])
sigma1 = xor(sigma1, m_list[48:64])
return sigma1
def sigma1(self, m_list):
my_belt = belt.belt(m_list[:32])
m = xor(m_list[32:48], m_list[48:64])
sigma1 = xor(my_belt.encryption(m), m_list[32:48])
sigma1 = xor(sigma1, m_list[48:64])
return sigma1