def destinguisher(key, iv, msg_list, enc_msg):
iv2 = increment_iv(iv)
encryptor = OpenSSL('cbc')
for i, m in enumerate(msg_list):
xored = xor_strings(xor_strings(iv, iv2), m)
enc_m = encryptor.encrypt(xored, key, iv2)
if enc_m == enc_msg:
return i, enc_m
n = 24 # len(msg)
# N = pow(2, n) # len(secrets)
N = 1000
# Placeholder
msgs = []
keys = []
secrets = []
start = time.time()
# ALICE (Encryption)
for i in range(0, N):
secret = str(randint(1000000000000000000000000, 9999999999999999999999999))
key = str(randint(1000, 9999))
enc_suite = OpenSSL('cbc')
msg = enc_suite.encrypt('0' * (n - s) + secret, key * 4, key * 4)
msgs.append(msg)
keys.append(key)
secrets.append(secret)
# ALICE sends "msgs" Block to BOB
# BOB (Brute force Decryption)
decrypted_msg = ''
rand_msg_solve = randint(0, N - 1)
print("Start decrypting at {}".format(time.time() - start))
keys = [str(x) for x in range(1000, 9999)]
while not decrypted_msg[:(n - s)] == '0' * (n - s):
if len(keys) == 0:
from openssl import OpenSSL
command_line_parser = CommandLineParser()
parsed_args = command_line_parser.parse_arguments(sys.argv[1:])
key_store = jks.KeyStore.load(parsed_args['keystore_path'],
parsed_args['password'])
key = key_store.private_keys['alias_name'].pkey[:32]
num_of_success = 0
msg_to_enc = 'x'
types_of_enc = ['ofb', 'cbc', 'ctr']
if True:
for enc_type in types_of_enc:
print('Sprawdzam szyfrowanie i deszyfrowanie dla ', enc_type.upper())
openssl = OpenSSL(enc_type)
iv = '0' * 16
enc_m = openssl.encrypt(msg_to_enc, key, iv)
dec_m = openssl.decrypt(enc_m, key, iv).rstrip(b'\x00')
try:
dec_m = dec_m.decode()
if_success = msg_to_enc == dec_m
except UnicodeDecodeError as e:
print("Wystąpił błąd!", e)
if_success = 0
num_of_success += if_success
print('Sprawdzam czy {a} == {b}. Rezultat to {c}\n'.format(
a=msg_to_enc, b=dec_m, c=if_success))
print('Stosunek sukcesów do prób to {a}/{b}'.format(a=num_of_success,
b=len(types_of_enc)))
openssl = OpenSSL(enc_type)
iv = '0' * 16
key_store = jks.KeyStore.load(parsed_args['keystore_path'],
parsed_args['password'])
key = key_store.private_keys['alias_name'].pkey[:32]
f = open(parsed_args['input_path'], 'r')
input_ms = [x for x in f]
f = open(r'C:\Users\Latitude\Desktop\output.txt', 'w')
if len(input_ms) == 0:
raise IOError('Za mało danych wejściowych')
elif len(input_ms) == 2:
msg_list = [x[:16] for x in input_ms]
random_msg = msg_list[randint(0, 1)]
enc_m = openssl.encrypt(random_msg, key, iv)
f.write(str(enc_m) + '\n')
print('Szyfruje {a} w {b}'.format(a=random_msg, b=enc_m))
if enc_type == 'cbc':
print('\n\nProgram uruchamia destinguisher\n\n')
dec_m, cipher = destinguisher(key, iv, msg_list, enc_m)
print('{a} zaszyfrowano w {b}'.format(a=msg_list[dec_m], b=cipher))
else:
for m in input_ms:
enc_m = openssl.encrypt(m, key, iv)
f.write(str(enc_m) + '\n')
print('Szyfruje {a} w {b}'.format(a=m, b=enc_m))
