def simpleDecode(openPath, zeroTerm=True, file=None): """decode data from an text file using homoglyphs Args: openPath (string): path to the stego-text file to decode zeroTerm (boolean, optional): stop decoding on \x00 (NUL). Defaults to True. file (<file>, optional): file pointer. Defaults to None. Returns: bytes: data from the text file """ with open(openPath, encoding="utf-8") as openData: fileData = openData.read() position = 0 data = [] for _char in fileData: byte = 0 shift = 0 while shift < 8: byte, shift = decodeGlyph(fileData, position, byte, shift) position += 1 if byte == 0 and zeroTerm: break data.append(byte) result = bytes(data) return toFile(result, file) if file else result
def decode(openPath, mapSeed, password="", zeroTerm=True, file=None): """decode data from an text file using homoglyphs Args: openPath (string): path to the stego-text file to decode mapSeed (string): seed to generate the lsb map password (str, optional): password to encrypt the data with. Defaults to "". zeroTerm (boolean, optional): stop decoding on \x00 (NUL). Defaults to True. file (<file>, optional): file pointer. Defaults to None. Returns: bytes: data from the text file """ with open(openPath, encoding="utf-8") as openData: fileData = openData.read() position = 0 data = [] decodeMap = getMap(fileData, mapSeed) for _char in fileData: byte = 0 shift = 0 while shift < 8: if decodeMap[position] > 0: byte, shift = decodeGlyph(fileData, position, byte, shift) position += 1 if byte == 0 and zeroTerm: break data.append(byte) result = otp(bytes(data), password, False) return toFile(result, file) if file else result
def decode(self, mapSeed, password="", zeroTerm=True, file=None):
"""decode data from an array using lsb steganography
Args:
mapSeed (string): seed to generate the lsb map
password (str, optional): password to encrypt the data with. Defaults to "".
zeroTerm (boolean, optional): stop decoding on \x00 (NUL). Defaults to True.
file (<file>, optional): file pointer. Defaults to None.
Returns:
bytes: data from the image
"""
lsbMap = getMap(self.array, mapSeed)
data = []
while self.pointer in range(self.arrayLen):
byte = 0
shift = 0
while shift < 8:
if lsbMap[self.pointer] > 0:
bit = self.getLsb() # Little endian
byte += bit << shift
shift += 1
else:
self.pointer += 1 # Increment pointer anyway
if byte == 0 and zeroTerm:
break
data.append(byte)
result = otp(bytes(data), password, False)
return toFile(result, file) if file else result
def decodeFile(openPath, password="", filePointer=None):
""" decode data as a file """
# Look for "/*.[* not .xml]" or "/application.xml"
with ZipFile(openPath, "r", compression=ZIP_DEFLATED) as zipFile:
files = []
for file in zipFile.namelist():
if not file.endswith(
(".xml", "mimetype")) or file.endswith("application.xml"):
files.append(file)
with zipFile.open(files[0], "r") as dataFile:
data = otp(dataFile.read(), password, False)
return toFile(data, filePointer) if filePointer else data
def simpleDecode(self, zeroTerm=True, file=None):
""" decode a flat array with no encryption
Args:
zeroTerm (boolean, optional): stop decoding on \x00 (NUL). Defaults to True.
file (<file>, optional): file pointer. Defaults to None.
"""
data = []
for _char in range(self.arrayLen // 8):
char, zero = self.getLsb8()
if zero and zeroTerm:
break
data.append(char)
result = bytes(data)
return toFile(result, file) if file else result
def decode(openPath, password="", file=None):
"""decode data from a file by extracting data after end of file
Args:
openPath (string): path to the stego-file to decode
password (str, optional): password to encrypt the data with. Defaults to "".
file (<file>, optional): file pointer. Defaults to None.
Returns:
bytes: data from the image
"""
""" decode an image with data """
data, fileExt = openFile(openPath)
readData = data[data.find(endKeys[fileExt]) + len(endKeys[fileExt]):]
result = otp(readData, password, False)
return toFile(result, file) if file else result
def decodeFile(openPath, password="", filePointer=None):
"""decode data from a microsoft office file by extracting the file
Args:
openPath (string): path to the stego-document to decode
password (str, optional): password to encrypt the data with. Defaults to "".
filePointer (<file>, optional): pointer to the file. Defaults to None.
Returns:
bytes: data from the image
"""
# Look for "/docProps/*.[* not .xml]" or "/docProps/application.xml"
with ZipFile(openPath, "r", compression=ZIP_DEFLATED) as zipFile:
files = []
for file in zipFile.namelist():
if file.startswith("docProps") and (not file.endswith(
(".xml", ".rels")) or file.endswith("application.xml")):
files.append(file)
with zipFile.open(files[0], "r") as dataFile:
data = otp(dataFile.read(), password, False)
return toFile(data, filePointer) if filePointer else data
def simpleDecode(openPath, zeroTerm=True, file=None, safe=True):
"""decode data from a text file using zero width chars
Args:
openPath (string): path to the stego-text file to decode
zeroTerm (boolean, optional): stop decoding on \x00 (NUL). Defaults to True.
file (<file>, optional): file pointer. Defaults to None.
safe (boolean, optional): use a reduced set of chars to show in fewer
editors. Defaults to True.
Returns:
bytes: data from the text file
"""
with open(openPath, "rb") as openData:
fileData = openData.read()
position = 0
data = []
for _char in fileData:
position, byte = decodeCharZero(fileData, position, safe)
if byte == 0 and zeroTerm:
break
data.append(byte)
result = bytes(data)
return toFile(result, file) if file else result
def decode(openPath,
mapSeed,
password="",
zeroTerm=True,
file=None,
safe=True):
"""decode data from a text file using zero width chars
Args:
openPath (string): path to the stego-text file to decode
mapSeed (string): seed to generate the lsb map
password (str, optional): password to encrypt the data with. Defaults to "".
zeroTerm (boolean, optional): stop decoding on \x00 (NUL). Defaults to True.
file (<file>, optional): file pointer. Defaults to None.
safe (boolean, optional): use a reduced set of chars to show in fewer
editors. Defaults to True.
Returns:
bytes: data from the text file
"""
with open(openPath, "rb") as openData:
fileData = openData.read()
position = 0
data = []
zwcMap = getMap(fileData, mapSeed)
for _char in fileData:
if zwcMap[position] > 0:
position, byte = decodeCharZero(fileData, position, safe)
if byte == 0 and zeroTerm:
break
data.append(byte)
else:
position += getUtf8Size(fileData,
position)[0] # increment by char size
result = otp(bytes(data), password, False)
return toFile(result, file) if file else result