def _decode(dataset, model_type, epochs, experiment_id, attack_name,
experiment_time):
pictures_path = default_path.format(experiment_id, attack_name,
experiment_time)
model, x_train, x_test, y_train, y_test = load_model(dataset=dataset,
model_type=model_type,
epochs=epochs)
score = []
lsb_score = []
stat_score = []
ensemble_score = []
for file in os.listdir(pictures_path):
if file.endswith(".{}".format(extension)):
path = "{}/{}".format(pictures_path, file)
img = img_to_array(load_img(path)) / palette
img_class = np.argmax(model.predict(np.array([img]), verbose=0))
index = file.index("_truth") - 1
real_class = int(file[index:index + 1])
score.append(real_class == img_class)
steg_msg = lsb.reveal(path)
lsb_score.append(0 if lsb_score == None else 1)
bitrate_R = attacks.spa(path, 0)
bitrate_G = attacks.spa(path, 1)
bitrate_B = attacks.spa(path, 2)
threshold = 0.05
if bitrate_R < threshold and bitrate_G < threshold and bitrate_B < threshold:
stat_score.append(0)
else:
stat_score.append(1)
#logger.info("img {} decoded as {} stegano {}".format(file,img_class,steg_msg))
logger.info("decoding score {}".format(np.mean(np.array(score))))
real_path = "{}/ref".format(pictures_path)
for file in os.listdir(pictures_path):
if file.endswith(".{}".format(extension)):
path = "{}/{}".format(pictures_path, file)
e4s_score = _detect_e4s_srm(
file_path=path,
model_file="e4s_srm_bossbase_lsbm0.10_gs.model")
ensemble_score.append(e4s_score)
steg_msg = lsb.reveal(path)
lsb_score.append(1 if lsb_score == None else 0)
spa_score = _detect_spa(path)
stat_score.append(spa_score)
lsb_score_mean = np.mean(np.array(lsb_score))
stat_score_mean = np.mean(np.array(stat_score))
logger.info("lsb detection score {}, stats detection score {}".format(
lsb_score_mean, stat_score_mean))
def perform(original_image_path, changed_image_path):
original_image = Image.open(original_image_path)
changed_image = Image.open(changed_image_path)
w, h = original_image.size
tile_size = 64
hash_length = 64
threshold = hash_length * 0.15
column, row = count_tiles_size(w, h, tile_size)
# Slice image to 64x64 blocks
original_tiles = image_slicer.slice(original_image_path,
number_tiles=column * row,
col=column,
row=row,
save=False)
changed_tiles = image_slicer.slice(changed_image_path,
number_tiles=column * row,
col=column,
row=row,
save=False)
# Итеративно проходим по каждому блоку изображения
for original_tile, changed_tile in zip(original_tiles, changed_tiles):
# Получаем хеш блока
original_hash = imagehash.phash_simple(original_tile.image)
changed_hash = imagehash.phash_simple(changed_tile.image)
# Прям хеш методом наименее значащего бита
original_tile.image = lsb.hide(original_tile.image, str(original_hash))
changed_tile.image = lsb.hide(changed_tile.image, str(changed_hash))
# Забираем хеш из изображения
decoded_original_hash = lsb.reveal(original_tile.image.copy())
decoded_changed_hash = lsb.reveal(changed_tile.image.copy())
# Вычисляем расстояние Хемминга и сравниваем его с пороговой границей
if hamming_distance(decoded_original_hash,
decoded_changed_hash) > threshold:
# Закрашиваем измененные области
# The current version supports all possible conversions between “L”, “RGB” and “CMYK.” The matrix argument only supports “L” and “RGB”.
rgb2xyz = (0.412453, 0.357580, 0.180423, 0, 0.212671, 0.215160,
0.072169, 0, 0.019334, 0.919193, 0.950227, 0)
changed_tile.image = changed_tile.image.convert("RGB", rgb2xyz)
result_image = image_slicer.join(changed_tiles, w, h)
file_name = original_image_path.split(".")[-2]
result_image_path = original_image_path.replace(file_name,
file_name + "_result")
result_image.save(result_image_path)
original_image.show()
changed_image.show()
result_image.show()
def recuperar_de_imgs(self, fromdir, usar_metadatos):
#parts = os.listdir(fromdir)
#todir = parts[0].split('_part_')[0] + '_parts'
todir = fromdir + '_parts'
# Creamos un directorio (si no existe).
if not os.path.exists(todir):
os.mkdir(todir)
else:
for fname in os.listdir(todir):
# Si el directorio existe y tiene contenido, dejamos el directorio y eliminamos el contenido del directorio.
os.remove(os.path.join(todir, fname))
parts = os.listdir(fromdir)
parts.sort()
for index, part in enumerate(parts):
# De la primera imagen extraemos: la extensión y el contenido.
if 'part_001' in part:
if usar_metadatos == True: # Si la opción seleccionada en la interfaz es la de Metadatos.
extension = recuperar_informacion(self, fromdir + '/' + part, 'extension')
content = recuperar_informacion(self, fromdir + '/' + part, 'contenido')
else: # Si la opción seleccionada en la interfaz es la de LSB.
if get_tipo(self, fromdir + '/' + part) == '.jpg' or get_tipo(self, fromdir + '/' +part) == '.jpeg': # Si la imagen es JPG, muestra error.
self.listWidget.addItem("Error!! El método LSB sólo permite imágenes PNG.")
return
else:
extension = lsb.reveal(fromdir + '/' + part).split("#####")[1]
content = lsb.reveal(fromdir + '/' + part).split("#####")[2]
# De las demás imágenes extraemos solo el contenido.
else:
if usar_metadatos == True:
content = recuperar_informacion(self, fromdir + '/' + part, 'contenido')
else:
if get_tipo(self, fromdir + '/' + part) == '.jpg' or get_tipo(self, fromdir + '/' + part) == '.jpeg':
self.listWidget.addItem("Error!! El método LSB sólo permite imágenes PNG.")
return
else:
content = lsb.reveal(fromdir + '/' + part).split("#####")[0]
nombre_fich = part[:part.rfind('.')] + '.enc'
filename = os.path.join(todir, nombre_fich)
escribirFichero(self, filename, content) # Una vez que hemos extraído todo el contenido de las imágenes, lo escribimos en el fichero de destino.
return (todir, extension)
def obtener_firma(self, img_name, metadatos):
if metadatos:
firma = Metadatos.obtener_firma_img(self, img_name) # Extrae la firma de la primera imagen empleando Metadatos.
else:
firma = lsb.reveal(img_name).split("#####")[0] # Extrae la firma de la primera imagen empleando LSB.
return firma
def AcceptInvite(ContactName, InputFile, OutputFile):
contents = lsb.reveal(InputFile)
try: # check that the data rertived from the file is valid
print(contents)
PublicKeyID, PublicKey, Max, IDpassword = json.loads(
contents) #take variables out of JSON
PublicKeyID, PublicKey, Max = int(PublicKeyID), int(PublicKey), int(
Max)
# Convert variables to integers to check they are integers
if PublicKey > Max: #ensure PublicKey is smaller than Max
raise ValueError
if PublicKeyID > 9223372036854775807: #ensure PublicKeyID is small enough for database
raise ValueError
if Max > (2**2048): #ensure max small enough to be real
raise ValueError
if PublicKey < 10000: #small values for PublicKey damage security
raise ValueError
except (ValueError, json.decoder.JSONDecodeError):
print("Invalid invite file"
) #if not JSON: JSONDecodeError; if wrong JSON: ValueError
return ()
ContactID = AddContact(PublicKeyID, PublicKey, Max, IDpassword,
ContactName)
for RerturnedData in CreateKeypair(ContactID): # Create Keypair to send
if type(RerturnedData) is str:
yield (RerturnedData)
else:
MyPublicKeyID, MyPublicKey, MyMax = RerturnedData
MessageContents = json.dumps(
["Invite Accepted", MyPublicKeyID, MyPublicKey, MyMax])
print("AI-1")
SM = SendMessage(OutputFile, MessageContents, IDpassword, PublicKey, Max,
ContactID, PublicKeyID)
for ReturnedData in SM:
yield (ReturnedData)
def dec(filename):
decrypt_message = lsb.reveal(filename)
decryptmess = decrypt_message
dec = Toplevel(root)
dec.geometry("400x200")
dec.config(bg="maroon")
dec.title("decode")
path = StringVar()
yam = StringVar()
yam = decryptmess
lab1 = Label(dec, text="welcome!!!", bg='maroon',
fg='white').place(relx=0.4, rely=0.05)
lab2 = Label(dec,
text='VIEW THE SECRETE MESSAGE!!!!!',
bg="maroon",
fg="white").place(relx=0.3, rely=0.2)
lab3 = Label(dec, text=yam, bg='maroon', fg='white', bd=5).place(relx=0.2,
rely=0.4)
lab4 = Label(dec, text="visit 2020 NEPAL", bg="maroon",
fg="white").place(relx=0.3, rely=0.6)
def SteganographyDecrypt():
print(
" _______.___________. _______ _______ ___ .__ __. ______ _______ .______ ___ .______ __ __ ____ ____ "
)
print(
" / | || ____| / _____| / \\ | \\ | | / __ \\ / _____|| _ \\ / \\ | _ \\ | | | | \\ \\ / / "
)
print(
" | (----`---| |----`| |__ | | __ / ^ \\ | \\| | | | | | | | __ | |_) | / ^ \\ | |_) | | |__| | \\ \\/ / "
)
print(
" \\ \\ | | | __| | | |_ | / /_\\ \\ | . ` | | | | | | | |_ | | / / /_\\ \\ | ___/ | __ | \\_ _/ "
)
print(
".----) | | | | |____ | |__| | / _____ \\ | |\\ | | `--' | | |__| | | |\\ \\----./ _____ \\ | | | | | | | | "
)
print(
"|_______/ |__| |_______| \\______| /__/ \\__\\ |__| \\__| \\______/ \\______| | _| `._____/__/ \\__\\ | _| |__| |__| |__| "
)
print(
" \n "
)
print("Move the image to\'De\'")
file = input("Enter Filename with extension:")
rev = lsb.reveal("./Stego/De/" + file)
ldscr()
print("The hidden message is:-\n" + rev)
jh = input()
def FetchKeyData(keyfile): # Fetch key data file from the file.
fs = FileSystemStorage()
fs.save(keyfile.name, keyfile)
path = os.path.join(MEDIA_ROOT, keyfile.name)
data = lsb.reveal(path)
os.remove(path)
return data
def retrieve(self, input_image_file):
"""
Retrieve the encrypted data from the image.
:param input_image_file: Input image file path
:return:
"""
cypher_data = lsb.reveal(input_image_file)
if not cypher_data:
return None
cypher_data = base64.b64decode(cypher_data)
# Retrieve the dynamic initialization vector saved
iv = cypher_data[:AES.block_size]
# Retrieved the cypher data
cypher_data = cypher_data[AES.block_size:]
try:
decryption_suite = AES.new(self.key, AES.MODE_CBC, iv)
decrypted_data = unpad(decryption_suite.decrypt(cypher_data),
self.block_size)
try:
return decrypted_data.decode('utf-8')
except UnicodeDecodeError:
# Binary data - returns as it is
return decrypted_data
except ValueError:
return None
def listen_to_peers(c):
global private_key
while True:
# data received from client
rec_msg = c.recv(1024)
if(not rec_msg):
break
size = int(rec_msg.decode('ISO-8859-1'))
c.sendall("GOT SIZE".encode('ISO-8859-1'))
data = bytearray()
while(len(data) < size):
data += c.recv(40960000)
if not data:
print('Bye')
break
# check for digital signature
image = Image.open(io.BytesIO(data))
img_msg = lsb.reveal(image)
decrypted = private_key.decrypt(img_msg.encode('ISO-8859-1'))
received_msg = decrypted.decode('ISO-8859-1')
received_msg = received_msg.split('#')
sender_name = received_msg[0].strip()
msg_body = str(':'.join(received_msg[1:]))
# print(msg_body, received_msg)
# print(received_msg, sender_name)
print(sender_name, 'says :',msg_body)
def decodeText():
secret_image = request.form['secret_image']
password = request.form['pwd']
image = base64.decodebytes(secret_image.encode())
count = 0
for i in summary:
if i.key.startswith('secret_decoder_images/'):
count = count + 1
secret_file_received = 'secret_decoder_images/img' + str(count) + '.png'
client.put_object(Bucket='pdf-save-repo',
Body=image,
Key=secret_file_received)
object_acl = resource.ObjectAcl('pdf-save-repo', secret_file_received)
object_acl = object_acl.put(ACL='public-read')
response = requests.get(
"https://pdf-save-repo.s3.ap-south-1.amazonaws.com/" +
secret_file_received)
img = Image.open(io.BytesIO(response.content))
message = lsb.reveal(img)
json_data = json.loads(message)
obj = resource.Object("pdf-save-repo", secret_file_received)
obj.delete()
if json_data['pwd'] != password:
return {'message': "Wrong password for the image"}
else:
return {'encoded_data': json_data['encoded_data']}
def get_signature(input_image: str) -> Optional[str]:
"""Obtains the signature of the image at the supplied path.
:param input_image: the input image path
:return: the signature if the image is signed, else None
"""
return lsb.reveal(input_image)
def reveal_image():
form = SHA512Form()
if request.method == "POST":
if request.files:
if "filesize" in request.cookies:
if not allowed_image_filesize(request.cookies["filesize"]):
flash("Filesize exceeded maximum limit", 'danger')
return redirect(request.url)
image = request.files["image"]
if image.filename == "":
flash("No filename", 'danger')
return redirect(request.url)
if allowed_image(image.filename):
filename = secure_filename(image.filename)
image.save(
os.path.join(app.config["IMAGE_UPLOADS"],
'secret\\' + filename))
clear_message = lsb.reveal(app.config["IMAGE_UPLOADS"] +
'secret\\' + filename)
if clear_message != None:
return render_template("reveal.html",
title="Revel Secret Text",
message=clear_message)
else:
flash('No Secret Messages in this file', 'danger')
return redirect(request.url)
else:
flash("That file extension is not allowed", 'danger')
return redirect(request.url)
return render_template("reveal.html", title="Stegano")
def extract(img, password, offset):
# extract data from an image
y = lsb.reveal(img, encoding="UTF-8", shift=offset)
if y is None:
return "Unable to retrieve any embedded data"
x = unlukefuscate(y)
s1 = x[:44] # salt (first 44)
s2 = x[44:68] # Initialization Vector (next 24)
s3 = x[68:] # Cipher Text / encrypted message (rest of message)
salt = b64decode(s1) # base64 decoded salt
iv = b64decode(s2) # base64 decoded init vector
ct = b64decode(s3) # base64 decoded cipher text
key = PBKDF2(password, salt,
dkLen=32) # Your key that you can encrypt with
try:
cipher = AES.new(key, AES.MODE_CBC, iv)
pt = unpad(cipher.decrypt(ct), AES.block_size)
dec_dat = pt.decode()
sequence = dec_dat.split(":")[-1]
p_seq = sequence.split(",")
trimmed = dec_dat[:-(len(sequence) + 1)]
ret_data = str(p_seq[0]) + " of " + str(p_seq[1]) + "\n" + trimmed
return ret_data
except ValueError:
return "Decryption failed"
def decode():
img = input("Enter the name of secret file(with extension): ")
cipher_text = lsb.reveal(img)
keyword = input("Enter keyword: ")
key = generateKey(cipher_text, keyword)
message = originalText(cipher_text, key)
return str(message)
def start_operation(self):
key_box = self.textbox_key.toPlainText()
image = self.path_textBox.text()
path_save = self.output_textBox.text()
if (key_box != '') and (image != ''):
try:
clear_message = lsb.reveal(image)
clear_message_byte = str.encode(
clear_message) #Convert String to Byte
decrypted_text = PrpCrypt(key_box).decrypt(clear_message_byte)
op = True
if op == True:
file_secure_output = self.output_textBox.text()
open_file = open(file_secure_output, "w")
open_file.writelines(decrypted_text)
open_file.close()
time.sleep(1)
QMessageBox.about(
self, 'Success',
'Process completed!\nYour message is stored in:\n{}'.
format(file_secure_output))
#Clear All The Input Boxes.
self.clear_all()
except:
QMessageBox.about(self, 'Error', 'Wrong Key!')
else:
QMessageBox.about(self, 'Error',
'Wrong Key or Input image not found!')
def _decode(dataset,
model_type,
epochs,
experiment_id,
attack_name,
experiment_time,
extension=None):
if not extension:
extension = default_extension
pictures_path = default_path.format(experiment_id, attack_name,
experiment_time)
model, x_train, x_test, y_train, y_test = load_model(dataset=dataset,
model_type=model_type,
epochs=epochs)
score = []
for file in os.listdir(pictures_path):
if file.endswith(".{}".format(extension)):
path = "{}/{}".format(pictures_path, file)
image = load_img(path)
if len(image.size) < 3:
image = image.convert("RGB")
if image.width != 32:
image = image.resize((32, 32), Image.BILINEAR)
img = img_to_array(image) / palette
img_class = np.argmax(model.predict(np.array([img]), verbose=0))
index = file.index("_truth") - 1
real_class = int(file[index:index + 1])
steg_msg = lsb.reveal(path)
logger.info("img {} decoded as {} stegano {}".format(
file, img_class, steg_msg))
score.append(real_class == img_class)
logger.info("decoding score {}".format(np.mean(np.array(score))))
def POST(self):
input = web.input(file={})
filename = input['file'].filename
fileds = input['file'].value
if filename.endswith('.jpg') or filename.endswith('.png') or filename.endswith('.jpeg') and filename.count('/') == -1:
os.chdir('static/files')
with open(filename, 'wb') as fout:
shutil.copyfileobj(input['file'].file, fout, 100000)
os.chdir('../../')
# do NOT touch above code
if filename.endswith('.png'):
return '''
<!DOCTYPE html>
<html lang="en">
<head>
<title>Attempted to Decode</title>
<meta charset="utf-8">
</head>
<body>
'''+lsb.reveal("static/files/"+filename)+"<p>Message decoded should be above.</p></body></html>"
if filename.endswith('.jpg') or filename.endswith('.jpeg'):
return '''
<!DOCTYPE html>
<html lang="en">
<head>
<title>Attempted to Decode</title>
<meta charset="utf-8">
</head>
<body>
'''+exifHeader.reveal("static/files/"+filename)+"<p>Message decoded should be above.</p></body></html>"
def stego():
print("hi")
global numBytes, numExfilFiles, numFiles, dT, eD,flg,textAdd,gpath
numF=1
flg=1
downloadImage()
while numF<=numFiles:
print("hey")
textF=open((gpath+"\\"+str(numF)+"combinedExfil.txt"), "r")
numBytestextEx=0
textAdd=""
last=checkLine(gpath+"\\"+str(numF)+"combinedExfil.txt")
for line in textF:
if numBytestextEx+sys.getsizeof(line)<20000:
numBytestextEx+=sys.getsizeof(line)
textAdd+=line
if line==last:
secret = lsb.hide(gpath+"\\diamond_PNG6695.png" , textAdd)
secret.save(gpath+"\\X"+str(numExfilFiles)+"combinedExfil.png")
elif numBytestextEx+sys.getsizeof(line)>=20000:
textAdd=line
secret = lsb.hide(gpath+"\\diamond_PNG6695.png", textAdd)
secret.save(gpath+"\\X"+str(numExfilFiles)+"combinedExfil.png")
print(lsb.reveal(gpath+"\\X"+str(numExfilFiles)+"combinedExfil.png"))
numExfilFiles+=1
if line==last:
secret = lsb.hide(gpath+"\\diamond_PNG6695.png", textAdd)
secret.save(gpath+"\\X"+str(numExfilFiles)+"combinedExfil.png")
numF+=1
def show_msg(img):
clear = lsb.reveal("imgs/new_"+img)
if clear:
with open("archives/messages.csv", "a") as file:
file.write(f"{img},{clear}\n")
return clear
return "Nenhuma Mensagem encontrada"
def generate_images(dir_name, word):
print("generating images for " + current_dir + " " + dir_name + "...")
clear_message = ""
current_index = 0
loop_index = 0
print("generating word: " + word)
for count in range(len(word)):
base_dir = current_dir + dir_name + "/"
if not os.path.exists(base_dir):
os.makedirs(base_dir)
current = word[count]
file = base_dir + str(
loop_index) + "-" + file_keys[current_index] + '.png'
height = random.randint(50, 955)
width = random.randint(250, 955)
img = Image.new('RGB', (width, height))
draw = ImageDraw.Draw(img)
fonts_path = "~/Library/Fonts"
font = ImageFont.truetype(os.path.join(fonts_path, 'slkscr.ttf'), 9)
draw.text((0, random.randint(10, height - 20)),
randomString(random.randint(2, 255)),
(random.randint(50, 255), random.randint(
50, 255), random.randint(50, 255)),
font=font)
img.save(file)
secret = lsb.hide(file, current)
secret.save(file)
clear_message += lsb.reveal(file)
current_index = current_index + 1
if current_index > 6:
current_index = 0
loop_index = loop_index + 1
def retrieve(input_image_file, key):
block_size = 32
cipher_data = lsb.reveal(input_image_file)
if not cipher_data:
return None
cipher_data = base64.b64decode(cipher_data)
# Retrieve the dynamic initialization vector saved
iv = cipher_data[:AES.block_size]
# Retrieved the cipher data
cipher_data = cipher_data[AES.block_size:]
try:
decryption_suite = AES.new(key, AES.MODE_CBC, iv)
decrypted_data = unpad(decryption_suite.decrypt(cipher_data),
block_size)
try:
return decrypted_data.decode('utf-8')
except UnicodeDecodeError:
# Binary data - returns as it is
return decrypted_data
except ValueError:
return None
def test_hide_and_reveal_UTF32LE(self):
messages_to_hide = 'I love 🍕 and 🍫!'
secret = lsb.hide("./tests/sample-files/Lenna.png",
messages_to_hide, 'UTF-32LE')
secret.save("./image.png")
clear_message = lsb.reveal("./image.png", 'UTF-32LE')
self.assertEqual(messages_to_hide, clear_message)
def basla(k1, k2):
baslangic = datetime.now()
aesCozme(str(k1) + '.png')
aesCozme(str(k2) + '.png')
birlestirme(k1, k2)
clear_message = lsb.reveal('ÇözülmüşResimRGB.png')
print('resime gizlenmiş olan veri : ', clear_message)
print('RGB çözme bitti --- çözme Süresi : ', (datetime.now() - baslangic))
def decode_pic():
hiddenMessage = lsb.reveal("output.png")
if hiddenMessage == None:
l = Label(decodeTab, text="No hidden message found")
l.pack()
else:
l = Label(decodeTab, text=hiddenMessage, font=myFont)
l.pack()
def test_hide_and_reveal(self):
messages_to_hide = ['a', 'foo', 'Hello World!', ':Python:']
for message in messages_to_hide:
secret = lsb.hide("./tests/sample-files/Lenna.png", message)
secret.save("./image.png")
clear_message = lsb.reveal("./image.png")
self.assertEqual(message, clear_message)
def main():
print HTML_HEADER
print HEAD
data = cgi.FieldStorage()
fileds = data['file']
if fileds.filename.endswith('.jpg') or fileds.filename.endswith('.png') or fileds.filename.endswith('.jpeg') or fileds.filename.endswith('.tiff') and fileds.filename.count('/') == -1:
os.chdir('files')
with open(fileds.filename, 'wb') as fout:
shutil.copyfileobj(fileds.file, fout, 100000)
os.chdir('../')
# do NOT touch above code
if fileds.filename.endswith('.png'):
print lsb.reveal("files/"+fileds.filename)
if fileds.filename.endswith('.jpg') or fileds.filename.endswith('.jpeg'):
print exifHeader.reveal("files/"+fileds.filename)
print "<p>Attempted to decode.</p>"
print END
def test_hide_and_reveal_UTF32LE(self):
messages_to_hide = 'I love 🍕 and 🍫!'
secret = lsb.hide("./tests/sample-files/Lenna.png",
messages_to_hide, encoding='UTF-32LE')
secret.save("./image.png")
clear_message = lsb.reveal("./image.png", encoding='UTF-32LE')
self.assertEqual(messages_to_hide, clear_message)
def test_hide_and_reveal(self):
messages_to_hide = ['a', 'foo', 'Hello World!', ':Python:']
for message in messages_to_hide:
secret = lsb.hide("./tests/sample-files/Lenna.png", message)
secret.save("./image.png")
clear_message = lsb.reveal("./image.png")
self.assertEqual(message, clear_message)
def main_function(original_image_filename, deformed_image_filename):
original_image = Image.open(original_image_filename)
deformed_image = Image.open(deformed_image_filename)
# расчет количества блоков
n = 64
width, height = original_image.size
col = math.ceil(width / n)
row = math.ceil(height / n)
# пороговая величина
threshold = n * 0.15
# разбитие изображений на блоки
orig_img_tiles = image_slicer.slice(original_image_filename,
col=col,
row=row,
save=False)
deform_img_tiles = image_slicer.slice(deformed_image_filename,
col=col,
row=row,
save=False)
for orig_block, deform_block in zip(orig_img_tiles, deform_img_tiles):
# getting block hash
orig_hash = myimagehash.phash_simple(orig_block.image)
deform_hash = myimagehash.phash_simple(deform_block.image)
# hide a message(hash) in images with the LSB
orig_block.image = lsb.hide(orig_block.image, str(orig_hash))
deform_block.image = lsb.hide(deform_block.image, str(deform_hash))
# Find a message(hash) in images with the LSB
decoded_orig_hash = lsb.reveal(orig_block.image.copy())
decoded_deform_hash = lsb.reveal(deform_block.image.copy())
if hamming_distance(decoded_orig_hash,
decoded_deform_hash) > threshold:
deform_block.image = deform_block.image.convert("L")
result_image = image_slicer.join(deform_img_tiles, width, height)
result_image.save("./images/result.png")
original_image.show()
deformed_image.show()
result_image.show()
def test_with_text_file(self):
text_file_to_hide = "./tests/sample-files/lorem_ipsum.txt"
with open(text_file_to_hide) as f:
message = f.read()
secret = lsb.hide("./tests/sample-files/Lenna.png", message)
secret.save("./image.png")
clear_message = lsb.reveal("./image.png")
self.assertEqual(message, clear_message)
def stego_out(picture):
hidden_ct = lsb.reveal(picture)
#Parse here
dt = eval(hidden_ct)
message = dt['msg']
nonce = dt['nc']
mac = dt['mc']
return message, nonce, mac
def decodeImage(self):
try:
message = lsb.reveal(self.path.text)
self.labelDecode.text = message
message = "Msg: Successfully decoded message."
self.decodeMessage.text = message
except:
message = "Msg: Something went wrong - This image may not have an encoded message."
self.decodeMessage.text = message
def deimg():
if secimg.get() == "png":
messag = lsb.reveal(fileopen)
if secimg.get() == "jpeg":
messag = aaa.reveal(fileopen)
Label2 = Label(text=messag)
Label2.place(relx=0.7, rely=0.7, height=21, width=204)
def test_with_text_file(self):
text_file_to_hide = "./tests/sample-files/lorem_ipsum.txt"
with open(text_file_to_hide) as f:
message = f.read()
secret = lsb.hide("./tests/sample-files/Lenna.png", message)
secret.save("./image.png")
clear_message = lsb.reveal("./image.png")
self.assertEqual(message, clear_message)
def test_with_transparent_png(self):
messages_to_hide = ['🍕', 'a', 'foo', 'Hello World!', ':Python:']
for message in messages_to_hide:
secret = lsb.hide("./tests/sample-files/transparent.png",
message, 'UTF-32LE')
secret.save("./image.png")
clear_message = lsb.reveal("./image.png", 'UTF-32LE')
self.assertEqual(message, clear_message)
def test_with_transparent_png(self):
messages_to_hide = ['🍕', 'a', 'foo', 'Hello World!', ':Python:']
for message in messages_to_hide:
secret = lsb.hide("./tests/sample-files/transparent.png",
message, encoding='UTF-32LE')
secret.save("./image.png")
clear_message = lsb.reveal("./image.png", encoding='UTF-32LE')
self.assertEqual(message, clear_message)
def test_with_bytes(self):
messages_to_hide = ["a", "foo", "Hello World!", ":Python:"]
for message in messages_to_hide:
message = "Hello World"
outputBytes = io.BytesIO()
bytes_image = lsb.hide(open("./tests/sample-files/20160505T130442.jpg", 'rb'), message)
bytes_image.save(outputBytes, "PNG")
outputBytes.seek(0)
clear_message = lsb.reveal(outputBytes)
self.assertEqual(message, clear_message)
def test_with_binary_file(self):
binary_file_to_hide = "./tests/sample-files/free-software-song.ogg"
with open(binary_file_to_hide, "rb") as bin_file:
encoded_string = base64.b64encode(bin_file.read())
message = encoded_string.decode()
secret = lsb.hide("./tests/sample-files/Montenach.png", message)
secret.save("./image.png")
clear_message = lsb.reveal("./image.png")
clear_message += '==='
clear_message = base64.b64decode(clear_message)
with open('file1', 'wb') as f:
f.write(clear_message)
with open('file1', 'rb') as bin_file:
encoded_string = base64.b64encode(bin_file.read())
message1 = encoded_string.decode()
self.assertEqual(message, message1)
try:
os.unlink('./file1')
except:
pass
from stegano import lsb
secret = lsb.hide("./test.png", "This is a test This is a testThis is a testThis is a testThis is a testThis is a test"
"This is a testThis is a testThis is a testThis is a testThis is a testThis is a test"
"This is a testThis is a testThis is a testThis is a testThis is a testThis is a test")
secret.save("./Lenna-secret.png")
print(lsb.reveal("./Lenna-secret.png"))
def png_decode(mfile_name): return lsb.reveal(mfile_name)