def __init__(
self, cipher_mode=None, initialization_vector=None, key=None, **kwargs):
"""Initializes the decrypter object.
Args:
cipher_mode (Optional[str]): cipher mode.
initialization_vector (Optional[bytes]): initialization vector.
key (Optional[bytes]): key.
kwargs (dict): keyword arguments depending on the decrypter.
Raises:
ValueError: when key is not set, block cipher mode is not supported,
or initialization_vector is required and not set.
"""
if not key:
raise ValueError(u'Missing key.')
cipher_mode = self.ENCRYPTION_MODES.get(cipher_mode, None)
if cipher_mode is None:
raise ValueError(u'Unsupported cipher mode: {0!s}'.format(cipher_mode))
if cipher_mode != Blowfish.MODE_ECB and not initialization_vector:
# Pycrypto does not create a meaningful error when initialization vector
# is missing. Therefore, we report it ourselves.
raise ValueError(u'Missing initialization vector.')
super(BlowfishDecrypter, self).__init__()
if cipher_mode == Blowfish.MODE_ECB:
self._blowfish_cipher = Blowfish.new(key, mode=cipher_mode)
else:
self._blowfish_cipher = Blowfish.new(
key, IV=initialization_vector, mode=cipher_mode)
def __init__(self, key=None, mode=None, initialization_vector=None, **kwargs):
"""Initializes the decrypter object.
Args:
key: optional binary string containing the key.
mode: optional mode of operation.
initialization_vector: optional initialization vector.
kwargs: a dictionary of keyword arguments depending on the decrypter.
Raises:
ValueError: when key is not set, block cipher mode is not supported,
or initialization_vector is required and not set.
"""
if not key:
raise ValueError(u'Missing key.')
if mode not in self.ENCRYPTION_MODES:
raise ValueError(u'Unsupported mode of operation: {0!s}'.format(mode))
mode = self.ENCRYPTION_MODES[mode]
if mode != Blowfish.MODE_ECB and not initialization_vector:
# Pycrypto does not create a meaningful error when initialization vector
# is missing. Therefore, we report it ourselves.
raise ValueError(u'Missing initialization vector.')
super(BlowfishDecrypter, self).__init__()
if mode == Blowfish.MODE_ECB:
self._blowfish_cipher = Blowfish.new(key, mode=mode)
else:
self._blowfish_cipher = Blowfish.new(
key, mode=mode, IV=initialization_vector)
def decrypt(password) :
c1 = Blowfish.new('5F B0 45 A2 94 17 D9 16 C6 C6 A2 FF 06 41 82 B7'.replace(' ','').decode('hex'), Blowfish.MODE_CBC, '\x00'*8)
c2 = Blowfish.new('24 A6 3D DE 5B D3 B3 82 9C 7E 06 F4 08 16 AA 07'.replace(' ','').decode('hex'), Blowfish.MODE_CBC, '\x00'*8)
padded = c1.decrypt(c2.decrypt(password.decode('hex'))[4:-4])
p = ''
while padded[:2] != '\x00\x00' :
p += padded[:2]
padded = padded[2:]
return p.decode('UTF-16')
def __init__(self, game):
if game == MH4G_NA or game == MH4G_EU:
self._cipher = Blowfish.new(b'AgK2DYheaCjyHGPB')
elif game == MH4G_JP:
self._cipher = Blowfish.new(b'AgK2DYheaCjyHGP8')
elif game == MH4G_KR:
self._cipher = Blowfish.new(b'AgK2DYheaOjyHGP8')
else:
raise ValueError('Ivalid game selected.')
def __init__(self, game):
if game == MH4G_NA or game == MH4G_EU:
self._cipher = Blowfish.new(b"AgK2DYheaCjyHGPB")
elif game == MH4G_JP:
self._cipher = Blowfish.new(b"AgK2DYheaCjyHGP8")
elif game == MH4G_KR:
self._cipher = Blowfish.new(b"AgK2DYheaOjyHGP8")
elif game == MH4G_TW:
self._cipher = Blowfish.new(b"Capcom123 ")
else:
raise ValueError("Ivalid game selected.")
def bf(self, text, key, iv=None):
"""Produce a 192bit Encrypted Subject. The first 64 bits are the
Initialization vector used in the Blowfish CFB Mode. The Subject text
is MD5 hashed and then encrypted using an MD5 hash of the Key."""
texthash = md5(text).digest()
keyhash = md5(key).digest()
if iv is None:
iv = urandom(8)
crypt1 = Blowfish.new(keyhash,
Blowfish.MODE_OFB, iv).encrypt(texthash)[:8]
crypt2 = Blowfish.new(keyhash,
Blowfish.MODE_OFB, crypt1).encrypt(texthash[8:])
return (iv + crypt1 + crypt2).encode('hex')
def decryptLicense(system_id, license_str):
license_key = None
try:
tmpKey = license_str.decode("hex")
tmpSystemKey = getBlowfishKey(system_id.encode("hex"))
tmpClientKey = getBlowfishKey(CLIENT_KEY.encode("hex"))
tmpCipher = Blowfish.new(tmpClientKey, Blowfish.MODE_CBC, DEFAULT_IV)
tmpKey = tmpCipher.decrypt(tmpKey)
tmpCipher = Blowfish.new(tmpSystemKey, Blowfish.MODE_CBC, DEFAULT_IV)
tmpKey = tmpCipher.decrypt(tmpKey)
tmpLength = ord(tmpKey[len(tmpKey)-1])
tmpKey = tmpKey[:len(tmpKey)-tmpLength]
license_key = tmpKey.decode("hex")
except Exception, msg:
print msg
def EncryptWithSessionKey(session_key, inp, session_key_type=SessionKeyType()):
"""
Encrypt input string with Session Key.
:param session_key: randomly generated session key
:param inp: input string to encrypt
"""
if session_key_type == 'DES3':
SessionKey = DES3.new(session_key)
from lib import misc
data = misc.RoundupString(inp, 24)
ret = SessionKey.encrypt(data)
del data
elif session_key_type == 'AES':
# TODO: AES is not tested yet
SessionKey = AES.new(session_key)
from lib import misc
data = misc.RoundupString(inp, 24)
ret = SessionKey.encrypt(data)
del data
elif session_key_type == 'Blowfish':
# TODO: BlowFish is not done yet!
SessionKey = Blowfish.new(session_key)
ret = ''
return ret
def __call__(self, queue):
print "Running WorkerProcessor thread..."
self.logrotate_interval = int(getattr(settings, "LOGSTREAM_LOGROTATE_INTERVAL", 60))
self.secure_mode = bool(getattr(settings, "LOGSTREAM_SECURE_MODE", False))
self.queue = queue
self.storage = storage.Storage(interval=self.logrotate_interval)
self.cipher = Blowfish.new(settings.SECRET_KEY)
while True:
qobj = self.queue.get(block=True)
if not self._analyze_object(qobj):
continue
is_encrypted = bool(qobj.pop("encrypt", False))
valid = False
if is_encrypted:
valid, qobj = self._decrypt(qobj)
if not valid:
continue
# skip all unencrtypted logs on secure
# mode is activated
if self.secure_mode and not valid:
continue
self._process_object(qobj)
def runTest(self):
# Encrypt/Decrypt data and test output parameter
cipher = Blowfish.new(b'4'*16, Blowfish.MODE_ECB)
pt = b'5' * 16
ct = cipher.encrypt(pt)
output = bytearray(16)
res = cipher.encrypt(pt, output=output)
self.assertEqual(ct, output)
self.assertEqual(res, None)
res = cipher.decrypt(ct, output=output)
self.assertEqual(pt, output)
self.assertEqual(res, None)
import sys
if sys.version[:3] != '2.6':
output = memoryview(bytearray(16))
cipher.encrypt(pt, output=output)
self.assertEqual(ct, output)
cipher.decrypt(ct, output=output)
self.assertEqual(pt, output)
self.assertRaises(TypeError, cipher.encrypt, pt, output=b'0'*16)
self.assertRaises(TypeError, cipher.decrypt, ct, output=b'0'*16)
shorter_output = bytearray(7)
self.assertRaises(ValueError, cipher.encrypt, pt, output=shorter_output)
self.assertRaises(ValueError, cipher.decrypt, ct, output=shorter_output)
def decode(cDataStr, token, n):
if (len(cDataStr) < 32):
return False
crc = cDataStr[0:32]
cData = b64decode(cDataStr[32:])
hasher = MD5.new()
hasher.update(token)
key = hasher.hexdigest()
cipher = Blowfish.new(key)
try:
dataStr = cipher.decrypt(cData)
except:
return False
checkCrc = MD5.new()
checkCrc.update(cData)
if (crc != checkCrc.hexdigest()):
return False
data = dataStr.split('|')
if (len(data) != 6):
return False
tLen = len(data[5])
pLen = ord(data[5][tLen-1])
nStr = data[5][0:tLen-pLen]
if (nStr != str(n)):
return False
return [data[0], data[1], data[2], data[3], data[4]]
def encrypt(source, key):
assert 4 <= len(key) <= 56
iv = Random.new().read(BLOCK)
cipher = Blowfish.new(key, MODE, iv)
source_length = len(source)
padding = get_padding(source_length)
return iv + cipher.encrypt(source + padding)
def encrypt(key, path="message.txt", saveCT="ciphertext.enc"):
b = random.randrange(2, (key.p)-1)
u = modexp(key.g, b, key.p)
v = modexp(key.h, b, key.p)
uv = str(u)+str(v)
k = SHA224.new(uv.encode('utf-8')).hexdigest().encode('utf-8') #symmetric key for compute the ciphertext with AES
print("K: "+str(k))
# Open file plaintext to cipher
plaintext = open(path,"rb").read()
#plaintext = encode(plaintext, key.iNumBits)
bs = Blowfish.block_size
iv = Random.new().read(bs)
cipher = Blowfish.new(k, Blowfish.MODE_CBC, iv)
plen = bs - divmod(len(plaintext),bs)[1]
padding = [plen]*plen
padding = struct.pack('b'*plen,*padding)
ciphertext = iv + cipher.encrypt(plaintext+padding)
# Save ciphertext to file:
print("CT-LEN:"+str(len(ciphertext)))
with open(saveCT, 'wb') as output:
dill.dump(u, output)
dill.dump(ciphertext, output)
return plaintext, ciphertext
def _loop(self):
self.cipher = Blowfish.new(settings.SECRET_KEY)
while True:
data = self._queue.get(True)
if self.cipher_enabled:
data = self._encrypt(data)
self.socket.send_pyobj(data)
def decrypt(key, ct_path="ciphertext.enc", savePT="plaintext.dec"):
with open(ct_path, 'rb') as input:
u = dill.load(input)
ciphertext = dill.load(input)
v = modexp(u, key.x, key.p)
uv = str(u)+str(v)
k = SHA224.new(uv.encode('utf-8')).hexdigest().encode('utf-8') #symmetric key for compute the ciphertext with AES
print("K: "+str(k))
bs = Blowfish.block_size
iv = ciphertext[:bs]
# Remove IV
ciphertext = ciphertext[bs:]
print("CT-LEN:"+str(len(ciphertext)))
cipher = Blowfish.new(k, Blowfish.MODE_CBC, iv)
plaintext = cipher.decrypt(ciphertext)
# Remove padding
last_byte = plaintext[-1]
plaintext = plaintext[:- (last_byte if type(last_byte) is int else ord(last_byte))]
# Write to file the plaintext decrypted
#plaintext = plaintext.decode(plaintext, key.iNumBits)
io.open(savePT,"wb").write(plaintext)
return plaintext
def encrypt(key, infile, outfile):
"""Takes key and input file object and output file object"""
iv = Random.new().read(Blowfish.block_size)
if verbose:
print "iv: ", bytes_to_hexstr(iv)
outfile.write(iv) # Write iv to outfile
# calc max size to see if last chunk need padding (and number of padding bytes)
file_size = os.fstat(infile.fileno()).st_size
pad_len = 8-(file_size%8)
if pad_len == 8:
if verbose:
print "wow no padding needed"
outfile.write(chr(0))
else:
if verbose:
print "Padding: {}".format(pad_len)
outfile.write(chr(pad_len))
cipher = Blowfish.new(key, Blowfish.MODE_OFB, iv)
while True:
plain_data = infile.read(CHUNK_SIZE)
if not plain_data:
break # Nothing more to read
if len(plain_data) != 4096 and pad_len != 8:
# last package so pad it
padding = Random.new().read(pad_len)
outfile.write(cipher.encrypt(plain_data + padding))
else:
outfile.write(cipher.encrypt(plain_data))
def _decrypt_code(code):
"""Decrypt code encrypted by _encrypt_code"""
# In some blowfish implementations, > 56 char keys can cause problems
secret_key = settings.SECRET_KEY[:56]
encryption_object = Blowfish.new(secret_key)
# strip padding from decrypted credit card number
return encryption_object.decrypt(base64.b64decode(code)).rstrip('X')
def _getcipher_real(self, key, algo):
"""
do the real job of decrypting using functions
form PyCrypto
"""
if (algo == "AES"):
key = self._padkey(key, [16, 24, 32])
cipher = cAES.new(key, cAES.MODE_ECB)
elif (algo == 'ARC2'):
cipher = cARC2.new(key, cARC2.MODE_ECB)
elif (algo == 'ARC4'):
raise CryptoUnsupportedException("ARC4 is currently unsupported")
elif (algo == 'Blowfish'):
cipher = cBlowfish.new(key, cBlowfish.MODE_ECB)
elif (algo == 'CAST'):
cipher = cCAST.new(key, cCAST.MODE_ECB)
elif (algo == 'DES'):
self._padkey(key, [8])
cipher = cDES.new(key, cDES.MODE_ECB)
elif (algo == 'DES3'):
key = self._padkey(key, [16, 24])
cipher = cDES3.new(key, cDES3.MODE_ECB)
elif (algo == 'XOR'):
raise CryptoUnsupportedException("XOR is currently unsupported")
else:
raise CryptoException("Invalid algorithm specified")
return cipher
def get_meta(callsign, key, iv, video_url):
url = "callsign/%s/meta.json" % (callsign)
try:
bs = Blowfish.block_size
cipher = Blowfish.new(key, Blowfish.MODE_CBC, iv)
plen = bs - divmod(len(url),bs)[1]
padding = [plen]*plen
padding = pack('b'*plen, *padding)
msg = cipher.encrypt(url + padding)
except Exception as e:
sys.stderr.write("Could not mangle url %s; got: %s" % (url, e))
return -1
url = video_url + msg.encode('hex_codec')
cmd = 'curl "%s"' % (url)
p = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell = True)
ret = p.wait()
stdoutdata, stderrdata = p.communicate()
if ret:
sys.stderr.write("Error: could not get duration for channel %s; got error %s\n" % (callsign, stderrdata))
try:
meta = json.loads(stdoutdata)
return int(meta["duration"])
except Exception:
sys.stderr.write("Error: could not get duration for channel %s; meta json output: %s\n" % (callsign, stdoutdata))
return -1
def __init__(self, game):
if game in (MH4G_JP, MH4G_NA, MH4G_EU, MH4G_KR, MH4G_TW):
self._cipher = Blowfish.new(b'blowfish key iorajegqmrna4itjeangmb agmwgtobjteowhv9mope')
elif game == MH4_JP:
self._cipher = None
else:
raise ValueError('Invalid game selected.')
def __init__(self, **config):
id_secret = config['id_secret']
self.id_secret = id_secret
self.id_cipher = Blowfish.new(self.id_secret)
per_kind_id_secret_base = config.get('per_kind_id_secret_base', self.id_secret)
self.id_ciphers_for_kind = _cipher_cache(per_kind_id_secret_base)
def decrypt(ciphertext, password, magic = None): "Decrypts a data stream" # decrypt data if len(ciphertext) % 8 != 0: raise base.FormatError key = SHA.new(password).digest() cipher = Blowfish.new(key, Blowfish.MODE_CBC, IV) plaintext = cipher.decrypt(ciphertext) # check magic string if magic != None: if plaintext[:len(magic)] != magic: raise base.PasswordError else: plaintext = plaintext[len(magic):] # remove padding padchar = plaintext[-1] npadchar = ord(padchar) if (npadchar > 0): if plaintext[-npadchar:] != padchar * npadchar: raise base.FormatError plaintext = plaintext[:-npadchar] return plaintext
def encryptLicense(system_id, license_key):
license_str = None
try:
tmpSystemKey = getBlowfishKey(system_id.encode("hex"))
tmpClientKey = getBlowfishKey(CLIENT_KEY.encode("hex"))
tmpLicenseKey = license_key.encode("hex")
tmpLength = BLOCK_SIZE - len(tmpLicenseKey)%BLOCK_SIZE
for i in range(tmpLength):
tmpLicenseKey = tmpLicenseKey + chr(tmpLength)
tmpCipher = Blowfish.new(tmpSystemKey, Blowfish.MODE_CBC, DEFAULT_IV)
tmpStr = tmpCipher.encrypt(tmpLicenseKey)
tmpCipher = Blowfish.new(tmpClientKey, Blowfish.MODE_CBC, DEFAULT_IV)
tmpStr = tmpCipher.encrypt(tmpStr)
license_str = tmpStr.encode("hex")
except Exception, msg:
print msg
def encrypt(self, key, mode, data, IV): if(mode == 1): obj = Blowfish.new(key, Blowfish.MODE_ECB, str(IV)) return obj.encrypt(data) elif(mode == 2): obj = Blowfish.new(key, Blowfish.MODE_CBC, str(IV)) return obj.encrypt(data) elif(mode == 3): obj = Blowfish.new(key, Blowfish.MODE_CFB, str(IV)) return obj.encrypt(data) elif(mode == 4): obj = Blowfish.new(key, Blowfish.MODE_OFB, str(IV)) return obj.encrypt(data)
def encrypt(key, password):
"""
Encrypt the password in Blowfish encryption
The password is saved in the form: ${NUMBER}${PASSWORD}${GARBAGE}
${LENGTH} is the length of the password, used from the decrypt()
function to separate it from the garbage.
If the password is multiple of 8, then no ${GARBAGE} is appended
"""
if not key or type(key) != str:
raise Exception("Please provide a valid secret key")
if not password or type(password) != str:
raise Exception("Please provide a valid password")
obj = Blowfish.new(key)
length = str(len(password))
if len(password) <= 9:
# In case the length of the password is less than 10, then
# add a zero in the front (eg 06), so we can produce a hash that
# is always a multiple of 8
length = '0' + length
new_password = length + password
if len(new_password) % 8 != 0:
# Append random strings to satisfy Blowfish
new_password += random_string(-len(new_password) % 8)
hash_password = base64.b64encode(obj.encrypt(new_password))
return hash_password
def scryptinfo(self):
print "[+] Nb key : 0x%08X (%d)" % (len(self.key), len(self.key))
for k in self.key:
print " Plaintext key : \"%s\"" % k
print " Sha-1 : %s" % hashlib.sha1(k).digest().encode('hex')
print " IV : %s" % Blowfish.new(k, Blowfish.MODE_ECB).encrypt('0000000000000000'.decode('hex')).encode('hex')
print "---"
def __init__(self):
self.factory = EchoClientFactory()
self.factory.handler = self
reactor.connectTCP('localhost', 8000, self.factory)
self.crypt = Blowfish.new('lostfrontier', 1)
self.crypt_blocksize = 8
def generate_expiring_request(lifetime, plaintext):
"""
Generate the parameters needed for an expiring email request with the given payload.
Payload should be comma-delimited, and the consumer should expect to find and verify
a timestamp and nonce appended to the given plaintext.
"""
# Add nonce
rng = Random.new()
nonce = ''.join(choice(string.ascii_uppercase + string.digits) for _ in range(256))
expiry = str(time.time() + lifetime)
plaintext = (plaintext + "," + expiry + "," + nonce).encode('utf-8')
# Pad the plaintext to the next full block with commas, because I can't be arsed to
# write an actually clever parser.
bs = Blowfish.block_size
paddinglen = bs - (len(plaintext) % bs)
plaintext += b',' * paddinglen
# Generate random IV of size one block.
iv = rng.read(bs)
cipher = Blowfish.new(VERIFICATION_SECRET_KEY, Blowfish.MODE_CBC, iv)
ciphertext = cipher.encrypt(plaintext)
# Generate the verification hash.
verification = hashlib.sha256()
verification.update(plaintext + VERIFICATION_HASH_SECRET.encode('utf-8'))
verify_hex = verification.hexdigest()
return base64.urlsafe_b64encode(iv), base64.urlsafe_b64encode(ciphertext), verify_hex
def _init(self,encrkey):
if self.encrkey!=encrkey:
from Crypto.Cipher import Blowfish
from random import randrange
self.randrange=randrange
self.c=Blowfish.new(encrkey)
self.encrkey=encrkey
def decrypt(self, buff):
md = SHA256.new(buff[:-0x100])
verifier = PKCS1_v1_5.new(self._static_pubkey)
if verifier.verify(md, buff[-0x100:]) == False:
raise ValueError('Invalid signature in footer.')
if self._pubkey is not None:
md = SHA256.new(buff[:-0x200])
verifier = PKCS1_v1_5.new(self._pubkey)
if verifier.verify(md, buff[-0x200:-0x100]) == False:
raise ValueError('Invalid signature in footer.')
buff = buff[:-0x200]
nonce = array.array('I', buff[-4:])
nonce.byteswap()
length = len(buff) - 4
buff = array.array('I', buff[:-4] + b'\x00' * (8 - length % 8))
buff.byteswap()
counter = Counter.new(32, prefix=nonce.tostring(), initial_value=0, little_endian=True)
cipher = Blowfish.new(self._key, Blowfish.MODE_CTR, counter=counter)
buff = array.array('I', cipher.decrypt(buff.tostring()))
buff.byteswap()
buff = buff.tostring()[:length]
md = buff[-20:]
buff = buff[:-20]
if md != hashlib.sha1(buff).digest():
raise ValueError('Invalid SHA1 hash in footer.')
return buff
def decrypt(self):
''' Decrypt a kwallet '''
if not self.key:
raise PasswordMissing('Set the password first')
# Unfortunately, KWallet's Blowfish implementation is a little wrong
# It seems to have the wrong endianness than of native systems,
# this following line fixes that
self.encrypted = util.switch_endianness(self.encrypted)
bf = Blowfish.new(self.key)
decrypted = bf.decrypt(self.encrypted)
# And switch the endianness again
return util.switch_endianness(decrypted)
def extract(self):
raw_resources = filter(lambda x: x.startswith('res/raw'),
self.zipfile.namelist())
iv = "12345678" # this has to be done better
key = self.zipfile.open('res/raw/blfs.key').read()
key = ''.join(['%x' % ord(x) for x in key])[0:50]
cipher = Blowfish.new(key, Blowfish.MODE_CBC, iv)
decode = base64.b64decode(
self.zipfile.open('res/raw/config.cfg').read())
config = cipher.decrypt(decode)
config = config[:config.find('</config>') + 9]
config = ET.fromstring(config)
c2 = config.findall('.//data')[0].get('url_main').split(';')
phone = config.findall('.//data')[0].get('phone_number')
return {'c2': c2, 'phone': phone}
def clean_key(self):
def validation_error():
self.data['key'] = get_key()
raise ValidationError(_('Incorrect key.'))
cobj = Blowfish.new(settings.SECRET_KEY)
text = cobj.decrypt(b64decode(self.cleaned_data['key'])).rstrip('_')
try:
key = float(text)
except:
validation_error()
now = time()
if now - key < 10 or now - key > 60 * 60 * 6: # valid for 6 hours
validation_error()
return
def Decrypt(self, Ciphertext: str):
'''
Decrypt ciphertext and return corresponding plaintext.
Args:
Ciphertext: A hex string that will be decrypted.
Returns:
Plaintext string.
'''
cipher1 = Blowfish.new(self.Key1, Blowfish.MODE_CBC, iv=self.IV)
cipher2 = Blowfish.new(self.Key2, Blowfish.MODE_CBC, iv=self.IV)
ciphered_bytes = bytes.fromhex(Ciphertext)
if len(ciphered_bytes) <= 8:
raise ValueError('Invalid Ciphertext.')
padded_plain_bytes = cipher2.decrypt(
cipher1.decrypt(ciphered_bytes)[4:-4])
i = 0
for i in range(0, len(padded_plain_bytes), 2):
if padded_plain_bytes[i] == 0 and padded_plain_bytes[i + 1] == 0:
break
plain_bytes = padded_plain_bytes[0:i]
try:
return plain_bytes.decode('utf-16-le')
except UnicodeDecodeError:
raise (ValueError('Invalid Ciphertext.'))
def decrypt(source, key, dest, buffer_size=DEFAULT_BUFFER_LENGTH):
"Decrypts the specified file and writes it to dest"
sfh = file(source, 'rb')
dfh = file(dest, 'wb')
decryptor = Encryptor.new(key)
uncompressor = bz2.BZ2Decompressor()
while True:
try:
dfh.write(
uncompressor.decompress(
decryptor.decrypt(sfh.read(buffer_size))))
except EOFError:
break
dfh.close()
sfh.close()
def encrypt(self, field, field_is_password=0):
""" Encrypt FPM encoded field """
hash=MD5.new()
hash.update((self._salt + self._password).encode())
key = hash.digest()
bf = Blowfish.new(key)
# Allow passwords that are longer than 24 characters. Unfortunately
# this will break fpm compatibility somewhat - fpm will not be able to
# handle such long password correctly.
noised = self._addNoise(field.encode('utf-8'), field_is_password and
(len(field) // FPM_PASSWORD_LEN + 1) * FPM_PASSWORD_LEN)
rotated = self._rotate(noised)
encrypted = bf.encrypt(rotated)
hexstr = self._bin_to_hex(encrypted)
return hexstr
def decode_dataset_user(trans, dataset_hash, user_hash):
#decode dataset id as usual
#decode user id using the dataset create time as the key
dataset_id = trans.security.decode_id(dataset_hash)
dataset = trans.sa_session.query(
trans.app.model.HistoryDatasetAssociation).get(dataset_id)
assert dataset, "Bad Dataset id provided to decode_dataset_user"
if user_hash in [None, 'None']:
user = None
else:
cipher = Blowfish.new(str(dataset.create_time))
user_id = cipher.decrypt(user_hash.decode('hex')).lstrip("!")
user = trans.sa_session.query(trans.app.model.User).get(int(user_id))
assert user, "A Bad user id was passed to decode_dataset_user"
return dataset, user
def encrypt_key(text, salt_key):
try:
bs = 8
extra_bytes = len(text) % bs
padding_size = bs - extra_bytes
padding = chr(padding_size) * padding_size
padded_text = text + padding
crypt_obj = Blowfish.new(salt_key, Blowfish.MODE_ECB)
cipher = crypt_obj.encrypt(padded_text)
return cipher
except Exception as ERROR:
return "ERROR"
def fish_secure_key_cb(data, option, value):
global fish_secure_key, fish_secure_cipher
fish_secure_key = weechat.config_string(
weechat.config_get("fish.secure.key"))
if fish_secure_key == "":
fish_secure_cipher = None
return weechat.WEECHAT_RC_OK
if fish_secure_key[:6] == "${sec.":
decrypted = weechat.string_eval_expression(fish_secure_key, {}, {}, {})
if decrypted:
fish_secure_cipher = Blowfish(decrypted)
return weechat.WEECHAT_RC_OK
else:
weechat.config_option_set(fish_config_option["key"], "", 0)
weechat.prnt("", "Decrypt sec.conf first\n")
return weechat.WEECHAT_RC_OK
if fish_secure_key != "":
fish_secure_cipher = Blowfish(fish_secure_key)
return weechat.WEECHAT_RC_OK
def decryption(ciphertext):
start = datetime.now()
iv = ciphertext[:bs]
ciphertext = ciphertext[bs:]
cipher = Blowfish.new(key, Blowfish.MODE_CBC, iv)
msg = cipher.decrypt(ciphertext)
last_byte = msg[-1]
msg = msg[:-(last_byte if type(last_byte) is int else ord(last_byte))]
plain_text = msg
end = datetime.now()
total = end - start
total = total.total_seconds()
print("Decryption time:", total)
return plain_text, total
def fish_secure_genkey(buffer):
global fish_secure_cipher, fish_config_option
newKey = blowcrypt_b64encode(urandom(32))
# test to see if sec.conf decrypted
weechat.command(buffer, "/secure set fish test")
decrypted = weechat.string_eval_expression("${sec.data.fish}", {}, {}, {})
if decrypted == "test":
weechat.config_option_set(
fish_config_option["key"], "${sec.data.fish}", 0
)
fish_secure_cipher = Blowfish(newKey)
weechat.command(buffer, "/secure set fish %s" % newKey)
def decrypt_key(cipher, salt_key):
try:
crypt_obj = Blowfish.new(salt_key, Blowfish.MODE_ECB)
decrypted_key = crypt_obj.decrypt(cipher)
# return decrypted_key
# print(decrypted_key)
padding_size = ord(decrypted_key[-1])
text = decrypted_key[:-padding_size]
# print "Decrypt key was made successfully"
return str(text)
except Exception as ERROR:
return "ERROR"
def decrypt(key, hash_pwd):
"""
Decrypt a Blowfish encrypted hash
The password is saved in the form ${LENGTH}${PASSWORD}${GARBAGE}
so the first two chars separate the actual password from the garbage
"""
if not key or type(key) != str:
raise Exception("Please provide a valid secret key")
if not hash_pwd or type(hash_pwd) != str:
raise Exception("Please provide a valid hash")
obj = Blowfish.new(key)
decrypted_pwd_full = obj.decrypt(base64.b64decode(hash_pwd))
# Remove the length and the garbage to get the actual password
password = decrypted_pwd_full[2:int(decrypted_pwd_full[:2]) + 2]
return password
def blowfish(key):
try:
from Crypto.Cipher import Blowfish
except ImportError:
try:
from Cryptodome.Cipher import Blowfish
except ImportError:
try:
import blowfish
except ImportError:
raise Exception('failed to import cryptographic module')
return blowfish.Cipher(key, byte_order='little').encrypt_block
bf = Blowfish.new(key, mode=Blowfish.MODE_ECB)
swapendian = lambda data: struct.pack('<2L', *struct.unpack('>2L', data))
return lambda data: swapendian(bf.encrypt(swapendian(data)))
def makeblowfish(args, key):
""" Create blowfish cipher """
from Crypto.Cipher import Blowfish
ecb = Blowfish.new(key, mode=Blowfish.MODE_ECB)
# XXX hack by Irae for mac os XXX
# convert to little endian
# original_encrypt = ecb.encrypt
# ecb.encrypt = lambda data: bytearray(wordswap(original_encrypt(wordswap(data))))
class T():
def encrypt(self, data):
return bytearray(wordswap(ecb.encrypt(wordswap(data))))
return T()
def changePassword(self, newpwd, progress=None):
if self.__readonly:
return False
# cria o blowfish para a nova senha
newbf = Blowfish.new(newpwd)
c = self.__connection.cursor()
ret = True
try:
rows = c.execute(
"select id, parent, label, value from info").fetchall()
for r in rows:
if progress is not None:
if progress.updateProgressBar(len(rows)):
ret = False
break
(id, parent, label, value) = r
l1 = self.__decrypt(label)
l2 = self.__encrypt(l1, newbf)
if parent == self.__FIELD_PASSWORD:
# o caso da senha deve ser diferente, pois não devo criptografar
# a senha antiga, mas sim a nova!!
v2 = self.__encrypt(newpwd, newbf)
else:
v1 = self.__decrypt(value)
v2 = self.__encrypt(v1, newbf)
c.execute("update info set label = ?, value = ? where id = ?",
(l2, v2, id))
if ret:
self.__connection.commit()
else:
self.__connection.rollback()
except:
# se deu qualquer erro, cancela tudo!
print "Error:", sys.exc_info()
self.__connection.rollback()
ret = False
c.close()
# se alterou com sucesso, fecha o banco e abre de novo
if ret:
self.close()
self.open(newpwd)
return ret
def blowfish_encryption(file, val):
key_str = id_generator()
key = key_str.encode("utf8")
bs = Blowfish.block_size
plaintext = file
cipher = Blowfish.new(key, Blowfish.MODE_CBC)
plen = bs - len(plaintext) % bs
padding = [plen] * plen
padding = pack('b' * plen, *padding)
msg = cipher.iv + cipher.encrypt(plaintext + padding)
if val == 1:
outputFileKey = 'first_blowfish_key-' + datetime.now().strftime(
'%d-%m-%Y_%I-%M-%S_%p') + '.txt'
outputFileObj = open("/home/ubuntu/encryption/MultipleKeys/" +
outputFileKey,
'wb') #wb to make sure bytes are written
outputFileObj.write(key)
outputFileObj.close()
return msg, outputFileKey
elif val == 2:
outputFile = 'final_encrypted_file-' + datetime.now().strftime(
'%d-%m-%Y_%I-%M-%S_%p') + '.txt'
outputFileKey = 'second_blowfish_key-' + datetime.now().strftime(
'%d-%m-%Y_%I-%M-%S_%p') + '.txt'
outputFileObj = open(
"/home/ubuntu/encryption/MultipleEncryption/" + outputFile, 'wb')
outputFileObj.write(msg)
outputFileObj.close()
outputFileObj = open("/home/ubuntu/encryption/MultipleKeys/" +
outputFileKey,
'wb') #wb to make sure bytes are written
outputFileObj.write(key)
outputFileObj.close()
return outputFile, outputFileKey
else:
outputFile = 'blowfish_encryption-' + datetime.now().strftime(
'%d-%m-%Y_%I-%M-%S_%p') + '.txt'
outputFileKey = 'blowfish_key-' + datetime.now().strftime(
'%d-%m-%Y_%I-%M-%S_%p') + '.txt'
outputFileObj = open(
"/home/ubuntu/encryption/EncryptionFiles/" + outputFile, 'wb')
outputFileObj.write(msg)
outputFileObj.close()
outputFileObj = open("/home/ubuntu/encryption/Keys/" + outputFileKey,
'wb') #wb to make sure bytes are written
outputFileObj.write(key)
outputFileObj.close()
return outputFile, outputFileKey
def fish_modifier_in_privmsg_cb(data, modifier, server_name, string):
global fish_keys, fish_cyphers
match = re.match(
r"^(:(.*?)!.*? PRIVMSG (.*?) :)(\x01ACTION )?((\+OK |mcps )?.*?)(\x01)?$",
string)
#match.group(0): message
#match.group(1): msg without payload
#match.group(2): source
#match.group(3): target
#match.group(4): action
#match.group(5): msg
#match.group(6): +OK |mcps
if not match:
return string
if match.group(3) == weechat.info_get("irc_nick", server_name):
dest = match.group(2)
else:
dest = match.group(3)
target = "%s/%s" % (server_name, dest)
targetl = ("%s/%s" % (server_name, dest)).lower()
buffer = weechat.info_get("irc_buffer", "%s,%s" % (server_name, dest))
if not match.group(6):
fish_announce_unencrypted(buffer, target)
return string
if targetl not in fish_keys:
fish_announce_unencrypted(buffer, target)
return string
fish_announce_encrypted(buffer, target)
if targetl not in fish_cyphers:
b = Blowfish(fish_keys[targetl])
fish_cyphers[targetl] = b
else:
b = fish_cyphers[targetl]
clean = blowcrypt_unpack(match.group(5), b)
if not match.group(4):
return "%s%s" % (match.group(1), fish_msg_w_marker(clean))
return "%s%s%s\x01" % (match.group(1), match.group(4),
fish_msg_w_marker(clean))
def encrypt(plaintext, password):
"Encrypts a data stream"
# right-pad data
padlen = 8 - len(plaintext) % 8
if padlen == 0:
padlen = 8
plaintext += chr(padlen) * padlen
# encrypt data
key = SHA.new(password).digest()
cipher = Blowfish.new(key, Blowfish.MODE_CBC, IV)
return cipher.encrypt(plaintext)
def encrypt(buff, key):
nonce = array.array('I', [random.getrandbits(32)])
buff += hashlib.sha1(buff).digest()
length = len(buff)
buff = array.array('I', buff + b'\x00' * (8 - length % 8))
buff.byteswap()
counter = Counter.new(32,
prefix=nonce.tostring(),
initial_value=0,
little_endian=True)
cipher = Blowfish.new(key, Blowfish.MODE_CTR, counter=counter)
buff = array.array('I', cipher.encrypt(buff.tostring()))
buff.byteswap()
buff = buff.tostring()[:length]
nonce.byteswap()
return buff + nonce.tostring()
def decryptString(secret, cipher):
'''只有CM在使用，以后不要再使用'''
obj = Blowfish.new(secret, Blowfish.MODE_ECB)
try:
ciph = b32decode(cipher)
except NameError:
ciph = decodestring(cipher)
except TypeError:
return None
plaintext = obj.decrypt(ciph)
try:
(c1, plain, c2) = plaintext.split(":valid:")
except ValueError:
return None
return plain
def encrypt(self, filePath, path=None, _file=None):
file_data = self.readFileBytes(filePath)
BFcipher = BF.new(self.key)
cipherData = BFcipher.encrypt(self.pad(file_data))
if path:
if _file:
f_name = os.path.join(path,
os.path.basename(filePath) + '.enc')
else:
f_name = path + '.enc'
else:
f_name = filePath + '.enc'
self.writeFileBytes(f_name, cipherData)
def Blowfish_decrypt(s):
bs = Blowfish.block_size # 8 BYTEs
key = bytes.fromhex(Blowfish_KEY)
ciphertext = s
iv = ciphertext[:bs] # first 8 bytes
ciphertext = ciphertext[bs:] # the rest of data
cipher = Blowfish.new(key, Blowfish.MODE_ECB) #blowfish cipher
msg = bytearray(cipher.decrypt(iv)) #decrypt first 8 bytes
last_block = msg #save first decrypted data
for i in range(0, len(ciphertext), 8):
sub_str = cipher.decrypt(ciphertext[i:i + 8]) #decrypt next 8 bytes
last_block = decrypt_xor(
last_block, sub_str) #xor with saved last decrypted 8 bytes
msg.extend(last_block)
return msg
def encrypt(key_file, message_file, ciphertext_file):
"""
Encrypt a file using Blowfish.
:param key_file: path to the file containing key
:param message_file: path to the message file which we want to encrypt
:param ciphertext_file: path where the encrypted file shall be saved.
:return: nothing
"""
block_size = Blowfish.block_size
key = utils.read_file_b(key_file)
message = utils.read_file_s(message_file)
data = utils.message_to_data(message, block_size)
cipher = Blowfish.new(key, Blowfish.MODE_CBC)
ciphertext = cipher.iv + cipher.encrypt(data)
utils.write_to_file_b(ciphertext_file, ciphertext)
def generate_testhash(password, random):
"Generates a testhash based on a password and a random string"
key = SHA(random + "\x00\x00" + password).digest()
cipher = Blowfish.new(key)
for i in range(1000):
random = encrypt_block(cipher, random)
h = SHA()
h.init(0L, 0L, 0L, 0L, 0L)
h.update(random)
h.update("\x00\x00")
testhash = h.digest()
return testhash
def createDB(self, pwd):
connection = sqlite3.connect(self.__databaseFile)
c = connection.cursor()
c.execute("create table V%i (nothing integer primary key)" %
self.__VERSION)
c.execute(
"create table info (id integer primary key, parent integer, type text, pos long, label text, value text, timestamp integer)"
)
self.__blowfish = Blowfish.new(pwd)
c.execute(
"insert into info (parent, value) values (?, ?)",
(self.__FIELD_PASSWORD, self.__encrypt(pwd, self.__blowfish)))
self.__blowfish = None
connection.commit()
c.close()
connection.close()
def main():
#result = "\n"
#for appid in allowedApps:
# result = str( result+"\""+rot13(appid)+"\", // "+appid+"\n" )
#print result
#Blowflish
key = "Copyright 2009 Palm Inc."
filename = "/usr/lib/lib_id.so"
__cipher = Blowfish.new(key, Blowfish.MODE_CBC)
result = __cipher.encrypt(__pad_file(kApps))
writefile("/tmp/apps", result)
print str("File written to " + "/tmp/apps")
print str("Key is \"" + rot13(key) + "\"")
print str("filename is \"" + rot13(filename) + "\" (" + filename + ")")
def decrypt_blowfish_CBC(key, ciphertext):
"""
Decrypts ciphertext encrypted using Blowfish Algorithm. Mode : CBC
Returns : plaintext
"""
bs = Blowfish.block_size
iv = ciphertext[:bs]
ciphertext = ciphertext[bs:]
cipher = Blowfish.new(key, Blowfish.MODE_CBC, iv)
plaintext = cipher.decrypt(ciphertext)
# remove padding
last_byte = plaintext[-1]
plaintext = plaintext[:-(
last_byte if type(last_byte) is int else ord(last_byte))]
return plaintext
def decrypt(key_file, ciphertext_file, output_file):
"""
Decrypt a file using Blowfish.
:param key_file: path to the file containing key
:param ciphertext_file: path to the file which we want to decrypt
:param output_file: path where the decrypted file shall be saved.
:return: nothing
"""
bs = Blowfish.block_size
key = utils.read_file_b(key_file)
ciphertext = utils.read_file_b(ciphertext_file)
iv = ciphertext[:bs]
ciphertext = ciphertext[bs:]
cipher = Blowfish.new(key, Blowfish.MODE_CBC, iv)
plaintext = cipher.decrypt(ciphertext)
utils.write_to_file_s(output_file, plaintext.decode('utf-8'))
def __decrypt_data(self, dirty_data):
previous_block = None # type: str
blowfish = Blowfish.new(BLOWFISH_KEY, Blowfish.MODE_ECB)
decrypted_data = io.BytesIO()
for index, chunk in self.__chunkify_string(dirty_data):
if index == 0:
continue
decrypted_block, = struct.unpack('q', blowfish.decrypt(chunk))
if previous_block:
decrypted_block ^= previous_block
previous_block = decrypted_block
decrypted_data.write(struct.pack('q', decrypted_block))
return decrypted_data.getvalue()
