def import_data(self, input, password):
"Imports data into an entrystore"
# check and pad password
if password is None:
raise base.PasswordError
# check the data
self.check(input)
dataversion = self.__parse_header(input[:12])
# handle only version 2 data files
if dataversion != 2:
raise base.VersionError
# Fetch the used 64 bit salt
salt = input[12:20]
iv = input[20:36]
key = PBKDF2(password, salt, iterations=12000).read(32)
# decrypt the data
input = input[36:]
if len(input) % 16 != 0:
raise base.FormatError
cipher = AES.new(key, AES.MODE_CBC, iv)
input = cipher.decrypt(input)
hash256 = input[0:32]
data = input[32:]
if hash256 != hashlib.sha256(data).digest():
raise base.PasswordError
# decompress data
padlen = ord(data[-1])
for i in data[-padlen:]:
if ord(i) != padlen:
raise base.FormatError
data = zlib.decompress(data[0:-padlen])
# check and import data
if data.strip()[:5] != "<?xml":
raise base.FormatError
entrystore = RevelationXML.import_data(self, data)
return entrystore
def import_data(self, input, password): "Imports data into an entrystore" # check and pad password if password is None: raise base.PasswordError # check the data self.check(input) dataversion = self.__parse_header(input[:12]) # handle only version 2 data files if dataversion != 2: raise base.VersionError # Fetch the used 64 bit salt salt = input[12:20] iv = input[20:36] key = PBKDF2(password, salt, iterations=12000).read(32) # decrypt the data input = input[36:] if len(input) % 16 != 0: raise base.FormatError cipher = AES.new(key, AES.MODE_CBC, iv) input = cipher.decrypt(input) hash256 = input[0:32] data = input[32:] if hash256 != hashlib.sha256(data).digest(): raise base.PasswordError # decompress data padlen = ord(data[-1]) for i in data[-padlen:]: if ord(i) != padlen: raise base.FormatError data = zlib.decompress(data[0:-padlen]) # check and import data if data.strip()[:5] != "<?xml": raise base.FormatError entrystore = RevelationXML.import_data(self, data) return entrystore
def import_data(self, input, password):
"Imports data into an entrystore"
# check password
if password is None:
raise base.PasswordError
# create a LuksFile
buffer = StringIO.StringIO(input)
luksfile = luks.LuksFile()
try:
luksfile.load_from_file(buffer)
except:
luksfile.close()
buffer.close()
raise base.FormatError
slot = luksfile.open_any_key(password)
if slot == None:
luksfile.close()
buffer.close()
raise base.PasswordError
data = luksfile.decrypt_data(0, luksfile.data_length())
# remove the pad, and decompress
padlen = struct.unpack("<I", data[-4:])[0]
data = zlib.decompress(data[0:-padlen])
if data.strip()[:5] != "<?xml":
raise base.FormatError
entrystore = RevelationXML.import_data(self, data)
return entrystore
def import_data(self, input, password):
"Imports data into an entrystore"
# check password
if password is None:
raise base.PasswordError
# create a LuksFile
buffer = StringIO.StringIO(input)
luksfile = luks.LuksFile()
try:
luksfile.load_from_file(buffer)
except:
luksfile.close()
buffer.close()
raise base.FormatError
slot = luksfile.open_any_key(password)
if slot == None:
luksfile.close()
buffer.close()
raise base.PasswordError
data = luksfile.decrypt_data(0, luksfile.data_length())
# remove the pad, and decompress
padlen = struct.unpack("<I", data[-4:])[0]
data = zlib.decompress(data[0:-padlen])
if data.strip()[:5] != "<?xml":
raise base.FormatError
entrystore = RevelationXML.import_data(self, data)
return entrystore
