def __parse_argon2(name: str, params: List[Tuple[str, Optional[str]]]) -> Argon2Kdf:
ret = Argon2Kdf.sensitive()
if name == "argon2":
name = "argon2id"
ret.type = Argon2Kdf.str_to_type(name)
for key, value in params:
if key == "fast":
ret = Argon2Kdf.fast()
elif key == "sensitive":
ret = Argon2Kdf.sensitive()
elif value is None:
log.warning(f"Key '{key}' is unrecognized for argon2 and/or needs an associated value.")
elif key in {"time_cost", "n", "n_iterations"}:
vint = int(value)
ret.time_cost = vint
elif key in {"mem_cost", "mem", "m", "memory"}:
mint = __parse_memory_unit(value) // 1024
ret.memory_cost = mint
elif key in {"salt", "s"}:
ret.salt = b64.decode(value)
elif key in {"salt-len", "sl"}:
sint = int(value)
ret.salt = rand_unique_bytes(sint)
elif key in {"parallelism", "para", "p"}:
pint = int(value)
ret.parallelism = pint
else:
log.warning(f"Unrecognized key '{key}' in params string.")
return ret
def __parse_scrypt(name: str, params: List[Tuple[str, Optional[str]]]) -> ScryptKdf:
ret = ScryptKdf.sensitive()
if name != "scrypt":
raise ValueError(f"Name must be 'scrypt'. Was '{name}'")
for key, value in params:
if key == "fast":
ret = ScryptKdf.fast()
elif key == "sensitive":
ret = ScryptKdf.sensitive()
elif value is None:
log.warning(f"Key '{key}' is unrecognized for scrypt and/or needs an associated value.")
elif key in {"log2n", "log2_n"}:
ret.log2_n = int(value)
elif key in {"n"}:
ret.log2_n = int(floor(log2(float(value))))
elif key in {"r"}:
ret.r = int(value)
elif key in {"p"}:
ret.p = int(value)
elif key in {"salt", "s"}:
ret.salt = b64.decode(value)
elif key in {"salt-len", "sl"}:
sint = int(value)
ret.salt = rand_unique_bytes(sint)
else:
log.warning(f"Unrecognized key '{key}' in params string.")
return ret
def main(
str='L77na/nrFsKvynd6HzOoG7GHTLXsTVu9qvY/2syLXzhPweyyMTJULu/6/kXX0KSvoOLSFQ==',
key=b'YELLOW SUBMARINE',
nonce=0):
enc = b64.decode(str)
dec = AES.CTR_decrypt(key, enc, nonce)
print(dec)
def get_ciphertexts(file):
ciphers = []
f = open(file, 'r');
for line in f:
line = line.rstrip('\r\n')
bytes = b64.decode(line)
ciphers.append(AES.CTR_encrypt(key, bytes, 0))
return ciphers
def _monitor(self):
while True:
line = self._serial.readline().strip()
debug('Received raw comm input: %r', line)
if len(line) < 4:
continue
if (not line.startswith(DEVICEID) and not
line.startswith('d') and not
line.startswith('e')):
continue
if line[1] == '$' and len(line) == 4:
# ACK
self._packetcond.acquire()
index = None
for (i, packet) in enumerate(self._packetlist):
if line[2:4] == packet[-4:-2]:
debug('Package ACK: %r', line)
print('Package ACK: '+ line + '\n')
index = i
break
if index is not None:
try:
self._packetlist.pop(index)
except:
pass
if self._packetlist == []:
self._packetcond.notify()
self._packetcond.release()
continue
if not b64.valid(line):
continue
if b64.checksum(line[:-2]) != line[-2:]:
continue
self._lock.acquire()
self._serial.write(line[1] + '$' + line[-2:] + '\r\n')
self._serial.flush()
self._lock.release()
data = b64.decode(line[2:-2])
if line.startswith('d'):
info('Debug message recieved: %r', data)
print data
elif line.startswith('e'):
error('Error message recieved: %r', data)
else:
print data
for callback in self._callbacks:
thread.start_new_thread(callback, (data,))
def recv_response(self, dec_resp=False):
response = ''
while self.ready_to_read():
b_response = self.client.recv(self.BUF_SIZE)
if not b_response:
break
if dec_resp and b_response[:3] == b'334':
response += b_response[:4].decode() + \
b64.decode(b_response[4:-2]).decode()
else:
response += b_response.decode()
if self.verbose:
print('S: ' + response)
return response
def _monitor(self):
while True:
line = self._serial.readline().strip()
debug('Received raw comm input: %r', line)
if len(line) < 4:
continue
if (not line.startswith(DEVICEID) and not line.startswith('d')
and not line.startswith('e')):
continue
if line[1] == '$' and len(line) == 4:
# ACK
self._packetcond.acquire()
index = None
for (i, packet) in enumerate(self._packetlist):
if line[2:4] == packet[-4:-2]:
debug('Package ACK: %r', line)
print('Package ACK: ' + line + '\n')
index = i
break
if index is not None:
try:
self._packetlist.pop(index)
except:
pass
if self._packetlist == []:
self._packetcond.notify()
self._packetcond.release()
continue
if not b64.valid(line):
continue
if b64.checksum(line[:-2]) != line[-2:]:
continue
self._lock.acquire()
self._serial.write(line[1] + '$' + line[-2:] + '\r\n')
self._serial.flush()
self._lock.release()
data = b64.decode(line[2:-2])
if line.startswith('d'):
info('Debug message recieved: %r', data)
print data
elif line.startswith('e'):
error('Error message recieved: %r', data)
else:
print data
for callback in self._callbacks:
thread.start_new_thread(callback, (data, ))
def deserialize(
props: Dict[str, Union[str, int, bool, None, Dict, List]]
) -> "Aes256GcmCipher":
ret = Aes256GcmCipher(b'')
base_keys = set(ret.serialize().keys())
if not base_keys.issubset(props.keys()):
raise ValueError(
f"The properties dict is missing required keys {base_keys - props.keys()}"
)
if props["algorithm"] != ret.serialize()["algorithm"]:
raise ValueError(
f"Expected an algo field of 'aes-256-gcm'. Got '{ret.serialize()['algo']}."
)
ret.nonce = b64.decode(props["nonce"])
return ret
def deserialize(
props: Dict[str, Union[str, int, bool, None, Dict,
List]]) -> "Argon2Kdf":
ret = Argon2Kdf.sensitive()
base_keys = set(ret.serialize().keys())
if not base_keys.issubset(props.keys()):
raise ValueError(
f"The properties dict is missing required keys {base_keys - props.keys()}"
)
ret.type = Argon2Kdf.str_to_type(props["algorithm"])
ret.version = props["version"]
ret.time_cost = props["time_cost"]
ret.memory_cost = props["memory_cost"]
ret.parallelism = props["parallelism"]
ret.salt = b64.decode(props["salt"])
return ret
def fetch_stream(episode_url):
html = fetch_html(get_url(episode_url))
metadata = XML.ElementFromString(
b64.decode(
urllib.unquote(
html.xpath('//html/body/div/div[2]/div/div[2]/input[@id="metadata"]')[0].get('value')
)
).replace("utf-16", "utf-8")
)
episode_id = metadata.xpath('//movie/eid')[0].text
cookie = Cookie.SimpleCookie(HTTP.CookiesForURL("http://www.turbofilm.tv"))["IAS_ID"].value
source_hash = metadata.xpath('//movie/sources2/%s' % Prefs["quality"])[0].text # TODO: move to preferences. Example: 8a96c36ca917daa615c0153838e50eec
position = "0"
lang = Prefs["lang"]
b = hashlib.sha1(cookie + str(random.random())).hexdigest()
a = hashlib.sha1(b + episode_id + "A2DC51DE0F8BC1E9").hexdigest()
return "http://cdn.turbofilm.tv/%s/%s/%s/%s/%s/%s/%s" % (hashlib.sha1(lang).hexdigest(), episode_id, source_hash, position, cookie, b, a)
def __parse_chacha20(
name: str,
params: List[Tuple[str, Optional[str]]]) -> ChaCha20Poly1305Cipher:
ret = ChaCha20Poly1305Cipher()
if name not in {"chacha20poly1305", "chacha20-poly1305"}:
raise ValueError(f"Given name '{name}' is not aes-256-gcm")
for key, value in params:
if key in {"iv", "nonce"}:
if value is None:
value = ''
byt = b64.decode(value)
if len(byt) != 12:
log.error("Nonce must be 12 bytes")
sys.exit(0)
ret.nonce = byt
else:
log.warning(f"Unrecognized key '{key}' in params string.")
return ret
def deserialize(
props: Dict[str, Union[str, int, bool, None, Dict, List]]
) -> "ChaCha20Poly1305Cipher":
ret = ChaCha20Poly1305Cipher()
base_keys = set(ret.serialize().keys())
if not base_keys.issubset(props.keys()):
raise ValueError(
f"The properties dict is missing required keys {base_keys - props.keys()}"
)
if props["algorithm"] != ret.serialize()["algorithm"]:
raise ValueError(
f"Expected an algo field of 'aes-256-gcm'. Got '{ret.serialize()['algo']}."
)
ret.nonce = b64.decode(props["nonce"])
if len(ret.nonce) != 12:
raise ValueError(f"Decoded nonce must be 12 bytes")
return ret
def deserialize(
props: Dict[str, Union[str, int, bool, None, Dict,
List]]) -> "ScryptKdf":
ret = ScryptKdf.sensitive()
base_keys = set(ret.serialize().keys())
if not base_keys.issubset(props.keys()):
raise ValueError(
f"The properties dict is missing required keys {base_keys - props.keys()}"
)
if props["algorithm"] != "scrypt":
raise ValueError(
f"The algorithm field must be 'scrypt'. Was '{props['algorithm']}'"
)
ret.log2_n = props["log2_n"]
ret.r = props["r"]
ret.p = props["p"]
ret.salt = b64.decode(props["salt"])
return ret
def decode(self, byties):
if not isinstance(byties, bytes):
return byties
pattern = re.compile(
"=\?(?P<enc>.*?)\?(?P<qb>[BbQq])\?(?P<text>.*?)\?=")
try:
string = byties.decode('utf-8')
except UnicodeError:
return str(byties)[2:-1]
found = re.finditer(pattern, string)
for part in found:
try:
enc, qb, text = part.group("enc"), part.group("qb").lower(), \
part.group("text")
if qb == "q":
new_part = quopri.decodestring(text).decode(enc,
errors="ignore")
elif qb == "b":
new_part = b64.decode(text).decode(enc, errors="ignore")
string = string.replace(part.group(), new_part)
except:
return str(byties)[2:-1]
return string
def __parse_aes256gcm(
name: str, params: List[Tuple[str, Optional[str]]]) -> Aes256GcmCipher:
ret = Aes256GcmCipher()
if name not in {
"aes256", "aes256gcm", "aes-256", "aes-256-gcm", "aes256-gcm"
}:
raise ValueError(f"Given name '{name}' is not aes-256-gcm")
for key, value in params:
if key in {"iv", "nonce"}:
if value is None:
value = ''
ret.nonce = b64.decode(value)
if key in {"iv-len", "nonce-len"}:
if value is None:
log.warning(f"No value given for key '{key}'.")
iint = int(value)
ret.nonce = rand_unique_bytes(iint)
else:
log.warning(f"Unrecognized key '{key}' in params string.")
return ret
def b_decode(string): # base64
return b64.decode(string.encode())
#!/usr/bin/python3 # ToraNova ([email protected]) # cryptopals set 1 challenge 7 # THIS IS A SCRIPT import os from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes from cryptography.hazmat.backends import default_backend # mylibs import b64 # opens the file with open('files/aes-7.txt', 'r') as f: buf = f.read() buf = buf.replace('\n', '') buf = b64.decode(buf) key = 'YELLOW SUBMARINE'.encode('utf8') print(key) # initialize AES cipher in ECB mode cipher = Cipher(algorithms.AES(key), modes.ECB(), backend=default_backend()) de = cipher.decryptor() msg = de.update(buf) + de.finalize() print(msg.decode('utf8'))
