def test_simon128_256(self):
block_size = 128
key_size = 256
for x in range(self.test_cnt):
key = randint(0, (2**key_size) - 1)
plaintxt = randint(0, (2**block_size) - 1)
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.decrypt(c.encrypt(plaintxt)) == plaintxt, 'Test %r Failed with Random Key %r and Random Plaintext %r' % (x, hex(key), hex(plaintxt))
def test_simon128_256(self):
key = 0x1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100
plaintxt = 0x74206e69206d6f6f6d69732061207369
ciphertxt = 0x8d2b5579afc8a3a03bf72a87efe7b868
block_size = 128
key_size = 256
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon96_144(self):
key = 0x1514131211100d0c0b0a0908050403020100
plaintxt = 0x74616874207473756420666f
ciphertxt = 0xecad1c6c451e3f59c5db1ae9
block_size = 96
key_size = 144
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon64_96(self):
key = 0x131211100b0a090803020100
plaintxt = 0x6f7220676e696c63
ciphertxt = 0x5ca2e27f111a8fc8
block_size = 64
key_size = 96
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon96_96(self):
key = 0x0d0c0b0a0908050403020100
plaintxt = 0x2072616c6c69702065687420
ciphertxt = 0x602807a462b469063d8ff082
block_size = 96
key_size = 96
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon64_128(self):
key = 0x1b1a1918131211100b0a090803020100
plaintxt = 0x656b696c20646e75
ciphertxt = 0x44c8fc20b9dfa07a
block_size = 64
key_size = 128
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon64_96(self):
key = 0x131211100b0a090803020100
plaintxt = 0x6f7220676e696c63
ciphertxt = 0x5ca2e27f111a8fc8
block_size = 64
key_size = 96
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon64_128(self):
key = 0x1b1a1918131211100b0a090803020100
plaintxt = 0x656b696c20646e75
ciphertxt = 0x44c8fc20b9dfa07a
block_size = 64
key_size = 128
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon48_72(self):
key = 0x1211100a0908020100
plaintxt = 0x6120676e696c
ciphertxt = 0xdae5ac292cac
block_size = 48
key_size = 72
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon48_96(self):
key = 0x1a19181211100a0908020100
plaintxt = 0x72696320646e
ciphertxt = 0x6e06a5acf156
block_size = 48
key_size = 96
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon32_64(self):
key = 0x1918111009080100
plaintxt = 0x65656877
ciphertxt = 0xc69be9bb
block_size = 32
key_size = 64
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon128_192(self):
key = 0x17161514131211100f0e0d0c0b0a09080706050403020100
plaintxt = 0x206572656874206e6568772065626972
ciphertxt = 0xc4ac61effcdc0d4f6c9c8d6e2597b85b
block_size = 128
key_size = 192
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_ofb_mode_chain(self):
plaintxts = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
c = SimonCipher(self.key, self.key_size, self.block_size, 'OFB', init=self.iv)
ciphertexts = [c.encrypt(x) for x in plaintxts]
c = SimonCipher(self.key, self.key_size, self.block_size, 'OFB', init=self.iv)
decryptexts = [c.decrypt(x) for x in ciphertexts]
assert plaintxts == decryptexts
def test_simon128_128(self):
key = 0x0f0e0d0c0b0a09080706050403020100
plaintxt = 0x63736564207372656c6c657661727420
ciphertxt = 0x49681b1e1e54fe3f65aa832af84e0bbc
block_size = 128
key_size = 128
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon128_192(self):
key = 0x17161514131211100f0e0d0c0b0a09080706050403020100
plaintxt = 0x206572656874206e6568772065626972
ciphertxt = 0xc4ac61effcdc0d4f6c9c8d6e2597b85b
block_size = 128
key_size = 192
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon128_256(self):
key = 0x1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100
plaintxt = 0x74206e69206d6f6f6d69732061207369
ciphertxt = 0x8d2b5579afc8a3a03bf72a87efe7b868
block_size = 128
key_size = 256
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon48_72(self):
key = 0x1211100a0908020100
plaintxt = 0x6120676e696c
ciphertxt = 0xdae5ac292cac
block_size = 48
key_size = 72
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon48_96(self):
key = 0x1a19181211100a0908020100
plaintxt = 0x72696320646e
ciphertxt = 0x6e06a5acf156
block_size = 48
key_size = 96
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon96_96(self):
key = 0x0d0c0b0a0908050403020100
plaintxt = 0x2072616c6c69702065687420
ciphertxt = 0x602807a462b469063d8ff082
block_size = 96
key_size = 96
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon32_64(self):
key = 0x1918111009080100
plaintxt = 0x65656877
ciphertxt = 0xc69be9bb
block_size = 32
key_size = 64
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon128_128(self):
key = 0x0f0e0d0c0b0a09080706050403020100
plaintxt = 0x63736564207372656c6c657661727420
ciphertxt = 0x49681b1e1e54fe3f65aa832af84e0bbc
block_size = 128
key_size = 128
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_simon96_144(self):
key = 0x1514131211100d0c0b0a0908050403020100
plaintxt = 0x74616874207473756420666f
ciphertxt = 0xecad1c6c451e3f59c5db1ae9
block_size = 96
key_size = 144
c = SimonCipher(key, key_size, block_size, 'ECB')
assert c.encrypt(plaintxt) == ciphertxt
assert c.decrypt(ciphertxt) == plaintxt
def test_ofb_mode_chain(self):
plaintxts = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
c = SimonCipher(self.key, self.key_size, self.block_size, 'OFB', init=self.iv)
ciphertexts = [c.encrypt(x) for x in plaintxts]
c = SimonCipher(self.key, self.key_size, self.block_size, 'OFB', init=self.iv)
decryptexts = [c.decrypt(x) for x in ciphertexts]
assert plaintxts == decryptexts
def test_ctr_mode_single_cycle(self):
self.counter = 0x01
c = SimonCipher(self.key, self.key_size, self.block_size, 'CTR', init=self.iv, counter=self.counter)
ctr_out = c.encrypt(self.plaintxt)
self.counter = 0x01
c = SimonCipher(self.key, self.key_size, self.block_size, 'CTR', init=self.iv, counter=self.counter)
output_plaintext = c.decrypt(ctr_out)
assert output_plaintext == self.plaintxt
def test_ofb_mode_equivalent(self):
c = SimonCipher(self.key, self.key_size, self.block_size, 'OFB', init=self.iv)
ofb_encrypt = c.encrypt(self.plaintxt)
c = SimonCipher(self.key, self.key_size, self.block_size, 'OFB', init=self.iv)
ofb_decrypt = c.decrypt(ofb_encrypt)
c = SimonCipher(self.key, self.key_size, self.block_size, 'ECB')
ecb_out = c.encrypt(self.iv)
ofb_equivalent_encrypt = ecb_out ^ self.plaintxt
ofb_equivalent_decrypt = ecb_out ^ ofb_equivalent_encrypt
assert ofb_encrypt == ofb_equivalent_encrypt
assert ofb_decrypt == ofb_equivalent_decrypt
def test_ctr_mode_single_cycle(self):
self.counter = 0x01
c = SimonCipher(self.key, self.key_size, self.block_size, 'CTR', init=self.iv, counter=self.counter)
ctr_out = c.encrypt(self.plaintxt)
self.counter = 0x01
c = SimonCipher(self.key, self.key_size, self.block_size, 'CTR', init=self.iv, counter=self.counter)
output_plaintext = c.decrypt(ctr_out)
assert output_plaintext == self.plaintxt
def test_ofb_mode_equivalent(self):
c = SimonCipher(self.key, self.key_size, self.block_size, 'OFB', init=self.iv)
ofb_encrypt = c.encrypt(self.plaintxt)
c = SimonCipher(self.key, self.key_size, self.block_size, 'OFB', init=self.iv)
ofb_decrypt = c.decrypt(ofb_encrypt)
c = SimonCipher(self.key, self.key_size, self.block_size, 'ECB')
ecb_out = c.encrypt(self.iv)
ofb_equivalent_encrypt = ecb_out ^ self.plaintxt
ofb_equivalent_decrypt = ecb_out ^ ofb_equivalent_encrypt
assert ofb_encrypt == ofb_equivalent_encrypt
assert ofb_decrypt == ofb_equivalent_decrypt
def test_speck64_96(keyi):
key = binascii.hexlify(keyi)
print key
key = int("0x" + key, 16)
plaintxt = 0x6d564d37426e6e71
ciphertxt = 0xbb5d12ba422834b5
block_size = 64
key_size = 96
c = SimonCipher(key, key_size, block_size, 'ECB')
print hex(c.encrypt(plaintxt))
if c.encrypt(plaintxt) == ciphertxt:
print keyi
if c.decrypt(ciphertxt) == plaintxt:
print keyi
def test_cbc_mode_single(self):
c = SimonCipher(self.key,
self.key_size,
self.block_size,
'CBC',
init=self.iv)
cbc_out = c.encrypt(self.plaintxt)
c = SimonCipher(self.key, self.key_size, self.block_size, 'ECB')
cbc_equivalent = c.encrypt(self.iv ^ self.plaintxt)
assert cbc_out == cbc_equivalent
c = SimonCipher(self.key,
self.key_size,
self.block_size,
'CBC',
init=self.iv)
cbc_out = c.decrypt(cbc_out)
c = SimonCipher(self.key, self.key_size, self.block_size, 'ECB')
cbc_equivalent = c.decrypt(cbc_equivalent) ^ self.iv
assert hex(cbc_out) == hex(cbc_equivalent) == hex(self.plaintxt)
class Simon:
def __init__(self, key_size, blocklength):
if key_size != 96:
raise InvalidKeyLength("Keylength of Simon must be 96 bits!")
if blocklength % 64 != 0:
raise InvalidCipherBlockLength("Blocklength of Simon should be multiplier of 64")
self._key = None
self._key_size = key_size
self._blocklength = blocklength
def set_key(self, key):
hex_key = bits_to_hex(key)
self._key = SimonCipher(hex_key, key_size=96, block_size=64)
def encrypt(self, message):
split_message = [message[x:x+64] for x in range(0, len(message), 64)]
encrypted_message = []
for single_message in split_message:
hex_message = bits_to_hex(single_message)
encrypted_hex = self._key.encrypt(hex_message)
encrypted_message = encrypted_message + hex_to_bits(encrypted_hex, 64)
return encrypted_message
def decrypt(self, message):
split_message = [message[x:x + 64] for x in range(0, len(message), 64)]
decrypted_message = []
for single_message in split_message:
hex_message = bits_to_hex(single_message)
decrypted_hex = self._key.decrypt(hex_message)
decrypted_message = decrypted_message + hex_to_bits(decrypted_hex, 64)
return decrypted_message
def argon2_test():
start = time.time()
ph = PasswordHasher()
hash = ph.hash(password)
hashed = hashlib.sha256(hash).digest()
end = time.time()
print "argon2 : ",(end-start)
start = time.time()
obj =AES.new(hashed,AES.MODE_CBC, 'This is an IV456')
ciphertext = obj.encrypt("The answer is no")
end = time.time()
print "AES Encrypt: ",(end-start)*1000
start = time.time()
obj =AES.new(hashed,AES.MODE_CBC, 'This is an IV456')
plaintext = obj.decrypt(ciphertext)
end = time.time()
print "AES Decrypt: ",(end-start)*1000
my_plaintext = 0xCCCCAAAA55553333
start = time.time()
big_cipher = SimonCipher(0x111122223333444455556666777788889999AAAABBBBCCCCDDDDEEEEFFFF0000, key_size=256, block_size=128)
simon = big_cipher.encrypt(my_plaintext)
end = time.time()
print "Simon Encrypt: ",(end-start)*1000
start = time.time()
big_cipher1 = SpeckCipher(0x111122223333444455556666777788889999AAAABBBBCCCCDDDDEEEEFFFF0000, key_size=256, block_size=128)
speck = big_cipher1.encrypt(my_plaintext)
end = time.time()
print "Speck Encrypt: ",(end-start)*1000
start = time.time()
big_cipher = SimonCipher(0x111122223333444455556666777788889999AAAABBBBCCCCDDDDEEEEFFFF0000, key_size=256, block_size=128)
plain = big_cipher.decrypt(simon)
end = time.time()
print plain
print "Simon Decrypt: ",(end-start)*1000
start = time.time()
big_cipher1 = SpeckCipher(0x111122223333444455556666777788889999AAAABBBBCCCCDDDDEEEEFFFF0000, key_size=256, block_size=128)
plain = big_cipher1.decrypt(speck)
end = time.time()
print plain
print "Speck Decrypt: ",(end-start)*1000
block_size = 64
key_size = 96
S = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefgihjklmnopqrstuvwxyz0123456789_'
for a in S[-5:]:
for b in S:
print(a + b + "..")
for c in S:
for d in S:
key = s2n('SECCON{%s}' % str(a + b + c + d))
if a + b + c + d == 'FLAG':
print(key)
cryp = SimonCipher(key, key_size, block_size, 'ECB')
if plaintxt == cryp.decrypt(ciphertxt):
print("?????")
print(a + b + c + d)
exit(1)
key == "SECCON{6Pz0}"
# flag = 'FLAG'
# key = s2n('SECCON{%s}' % flag)
# print(key)
# cryp = SimonCipher(key, key_size, block_size, 'ECB')
# cipher = cryp.encrypt(plaintxt)
# plaintxt = cryp.decrypt(ciphertxt)
# print(cipher)
# print(plaintxt)
def main():
random.seed(1)
a = p521.create_private()
b = p521.create_private()
A = p521.create_public(a)
B = p521.create_public(b)
print('a =', hex(a))
print('b =', hex(b))
print('A = (' + hex(A[0]) + ', ' + hex(A[1]) + ')')
print('B = (' + hex(B[0]) + ', ' + hex(B[1]) + ')')
a_prime = p521.create_private()
b_prime = p521.create_private()
A_prime = p521.create_public(a_prime)
B_prime = p521.create_public(b_prime)
print('a\' =', hex(a))
print('b\' =', hex(b))
print('A\' = (' + hex(A_prime[0]) + ', ' + hex(A_prime[1]) + ')')
print('B\' = (' + hex(B_prime[0]) + ', ' + hex(B_prime[1]) + ')')
y_sign = p521.determine_sign(A_prime[1])
A_prime_c = p521.point_compression(hex(A_prime[0]), y_sign)
# "Bond. James Bond."
message = '426f6e642e204a616d657320426f6e642e'
A_p_m = A_prime_c + message
str_sha3_hash = hashlib.new('sha3_512', A_p_m.encode()).hexdigest()
sha3_hash = int(str_sha3_hash, 16)
x = p521.create_ephemeral()
print('ephemeral x =', x)
(r, s) = p521.sign(sha3_hash, x, a)
str_r = hex(r)[2:].zfill(132)
str_s = hex(s)[2:].zfill(132)
text = str_r + str_s + A_p_m
k = p521.point_mul(B[0], B[1], x)
print('Alice computes secret key k =', hex(k[0]))
y_sign = p521.determine_sign(k[1])
k_x = p521.point_compression(hex(k[0]), y_sign)
my_simon = SimonCipher(k[0], key_size=256, block_size=128)
plaintext = simon_prep(text)
X = p521.base_point_mul(x)
y_sign = p521.determine_sign(X[1])
X_x = p521.point_compression(hex(X[0]), y_sign)
print('before ecnryption X_x =', X_x)
print('before encryption r = ' + str_r)
print('before encryption s = ' + str_s)
print('before encryption A\' = ' + A_prime_c)
print('before encryption message = ' + message)
ciphertext = []
for t in plaintext:
ciphertext.append(my_simon.encrypt(int(t, 16)))
ciphertext.insert(0, X_x)
text = ''
for i in range(1, len(ciphertext)):
text = text + hex(ciphertext[i])[2:]
print('after ecnryption X_x =', X_x)
print('after encryption (r, s, A\', message) = ' + text)
recovered_X = p521.point_decompression(ciphertext[0])
recovered_k = p521.point_mul(recovered_X[0], recovered_X[1], b)
print('Bob computes secret key k =', hex(recovered_k[0]))
print('It is ' + str(k[0] == recovered_k[0]) +
' that Alice and Bob compute the same scret key')
ciphertext = ciphertext[1:]
my_simon = SimonCipher(recovered_k[0], key_size=256, block_size=128)
recovered_text = []
for t in ciphertext:
recovered_text.append(hex(my_simon.decrypt(t))[2:])
(recovered_r, recovered_s, recovered_A_prime,
recovered_message) = recover(recovered_text, r)
(signature_verified, key_used) = p521.verify(recovered_r, recovered_s, A,
recovered_A_prime, sha3_hash)
if (signature_verified):
print('signature verified with key ' + key_used)
print('after decryption X_x =', X_x)
print('after decryption =', hex(recovered_r))
print('after decryption s =', hex(recovered_s))
print('after decryption A\' = (' + hex(recovered_A_prime[0]) + ', ' +
hex(recovered_A_prime[1]) + ')')
if (A_prime[0] == recovered_A_prime[0]
and A_prime[1] == recovered_A_prime[1]):
print('test case for compressing and decompressing A\' works')
print('efter decryption message = ' + message)
from simon import SimonCipher
#my_simon = SimonCipher(0xABBAABBAABBAABBAABBAABBAABBAABBA)
tiny_cipher = SimonCipher(0x123456789ABCDEF0, key_size=72, block_size=48)
my_plaintext = bytes([0x11, 0x22, 0x33])
simon_ciphertext = tiny_cipher.encrypt(my_plaintext)
print(simon_ciphertext)
simon_plaintext = tiny_cipher.decrypt(simon_ciphertext)
print(simon_plaintext)
a = simon_plaintext.decode("hex")
print(a)
import random
import binascii
from simon import SimonCipher
key_plain = os.environ['flag'].encode("utf-8")
key_encoded = int.from_bytes(key_plain, "big")
my_simon = SimonCipher(key_encoded)
my_plaintext = ''.join(
random.SystemRandom().choice(string.ascii_lowercase +
string.ascii_uppercase + string.digits)
for _ in range((8))).encode("utf-8")
my_plaintext_encoded = int.from_bytes(my_plaintext, "big")
simon_ciphertext = my_simon.encrypt(my_plaintext_encoded)
simon_plaintext = my_simon.decrypt(simon_ciphertext)
print(key_plain)
print(my_plaintext_encoded)
print(simon_plaintext)
print(my_plaintext)
print(simon_plaintext.to_bytes(8, "big").decode("utf-8"))
with open("/usr/src/app/data/plain", "wb") as fd:
fd.write(my_plaintext)
with open("/usr/src/app/data/cipher", "wb") as fd:
fd.write(simon_ciphertext.to_bytes(16, "big"))
