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0:00

Интро

0:15

Что такое стеганография

1:15

Установка необходимых библиотек

1:40

Запись сообщения в png изображение

2:34

Чтение сообщения из png изображения

3:24

Запись сообщения в jpg изображение

4:06

Чтение сообщения из jpg изображения

4:34

Запись текста в изображение с использованием ключа

6:30

Расшифровка текста из изображения с использованием ключа

#8. Паттерн "Моносостояние" | Объектно-ориентированное программирование Python

#8. Паттерн "Моносостояние" | Объектно-ориентированное программирование Python

Channel: selfedu

Как понять, что происходит в коде? Отладка python кода на pythontutor.com

Как понять, что происходит в коде? Отладка python кода на pythontutor.com

Channel: egoroff_channel

python

python программирование

python для начинающих

python обучение

python 3

python programming

пайтон

уроки пайтон

pythontoday

python2day

python tutorial

шифрование

шифрование сообщений

стеганография

зашифровываем сообщение

steganography

stegano

безопасность

компьютерная безопасность

криптография

анонимность

уроки python

информационная безопасность

шифрование python

cryptography

стеганография python

программирование

кодинг

text steganography

steganocryptopy

00:00:07

friends, hello everyone, you are on the channel, let's go

00:00:09

there and today we will talk about

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steganography and write our own

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program for hiding text in

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images. In the age of high technology,

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information seems to be of the greatest

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value, so it is not surprising that

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recently many

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tools have been created to protect it.

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Steganography is a way of transmitting or

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storing information Taking into account that the

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very fact of such a transfer of ideas was kept secret,

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I was inspired to review the series

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Mr. Robot, the main character with enviable

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consistency hid data both in

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images and in other media files.

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If you hide the password in notes

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or write it down on a piece of paper, hiding it in a

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safe, an attacker can directly

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guess where to look for them in the case of

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steganography, he has no clues

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where to look for hidden, and also

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encrypted data,

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just as there are actually no hints that

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something is hidden somewhere,

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because everything is in front of his eyes, it won’t even occur to him

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what’s in the folder with your graduation

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photos in one of the 300 photos with

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your secrets described ok I think we have more or less

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figured out the theories, let's write a

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simple program that will

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record and, as a result, hide the

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text in the image; getting acquainted with

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steganography, I decided to start with ready-made

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libraries; install the

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stiga library we need on

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[music]

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we need to import the LSD module LSD is a

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method of steganography in which the

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low-order bits of one of the GB colors are changed, the

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pixels are full of encoding the text, let's

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first work with the png image,

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create a secret variable, contact the

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LSD module and call its Hide method,

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which will take several

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parameters, the first is the path to our

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image and the second parameter is a

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secret message or text that we

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want to record and make invisible to

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prying eyes,

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then we call the safe method in which

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we pass the name of the new image as a parameter,

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run our code and see what is next to the

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source file appeared just created by us

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in which a message is written,

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open the image and see that they are

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completely identical, great, let's

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write a very simple code for reading,

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turn to the module cola knocked down and call

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its method roared in front of it the path to

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our image with a twist,

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print the result and see our

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hidden text is excellent when working with the stiga library

00:02:57

and the lsb module, I encountered an

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encoding problem, or rather with the

00:03:01

perception of the Cyrillic alphabet,

00:03:02

this module flatly refused

00:03:04

to work with it, it got to the point that I had already

00:03:06

started writing my own

00:03:07

module, although maybe I’m messing up somewhere if

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you You will be able to recognize the Cyrillic alphabet,

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be sure to write in the comments I will be

00:03:14

grateful There is no problem when

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working with the GPJ format and modules and

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xiv header, perhaps it’s worth delving

00:03:21

into its code in more detail and you will be able to solve the problem

00:03:22

with the encoding, but not today I’ll import the

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module,

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create a variable, access the module

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and we call its Hide method, it is similar to the

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method of the ls module, with the difference being that as the

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second parameter we pass the path to

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the image in which the message will be hidden,

00:03:45

and as the third parameter the message itself

00:03:51

[music]

00:03:58

we run the script, ready to

00:04:06

print the message, we

00:04:08

will also use the roar method by passing it to

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it path to the image

00:04:20

[music]

00:04:30

run the code, everything works fine,

00:04:33

let's then write a code that,

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in addition to writing text into the image, will

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also generate a key to decipher the

00:04:40

message without which it becomes very

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difficult and maybe impossible,

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because among the 300 of your photos from

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the entrance you also need to find a photo with your beloved

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mathematically, install the libraries will

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and stiga on crypto pie

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[music]

00:05:01

[music]

00:05:10

[music]

00:05:12

import the module we need,

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first of all, let's generate a key

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by calling the generics method of the

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steganography module in the parameters, pass the path

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where we want to save the file with the key,

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run our code and see that a

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file has appeared in the directory and it

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contains a key generated by the module inside,

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create an instance of the

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steganography class, call the encrypt method and

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pass the path to our key as a parameter,

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then our image and the path to the file

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that will contain the messages

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[music]

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call the safe method and pass the path to it

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to the image in which

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the text will be hidden we are ready to run the code and

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see that a new file has appeared let's

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try to decrypt the message

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[music]

00:06:35

we turn to the decrypt method and as the

00:06:39

first parameter we indicate the path to the

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key and the second is the path to our image

00:06:50

we will print the result everything works fine

00:06:56

we used very simple

00:06:58

libraries, to be honest, I do

00:07:00

n’t really like their functionality, although in principle it

00:07:01

does the job, the topic is

00:07:03

new to me, as far as I understand, the main

00:07:05

drawback is the visibility of dead pixels in

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the image in case of hiding a large

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number of characters,

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however, this drawback is perfectly

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coped with by high

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image resolution, for example in a 4 by 4 resolution

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thousands of pixels you can write text 3

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times more than war and peace I wanted to

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try to write my own module for

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encrypting and recording information both in an

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image and, for example, video audio

00:07:27

or even in ordinary messages, yes this is also

00:07:30

possible, although I am a fan of the terminal, we

00:07:32

can also attach the web or a

00:07:33

graphical software interface if

00:07:36

you are interested in continuing the project,

00:07:37

be sure to like it because for me

00:07:39

this is the best reward all the code will be

00:07:41

available on GitHub and in the telegram channel

00:07:43

you will find links in the description of your friends

00:07:45

thank you very much for watching and

00:07:47

supporting the channel if the video was

00:07:49

useful to you and interesting you want more

00:07:51

projects and practice in python and other

00:07:53

languages subscribe to the channel like it

00:07:55

share your thoughts in the comments

00:07:56

be healthy bye everyone

Description:

В данном видео разберемся, что такое стеганография и научимся скрывать и шифровать текст в изображениях png и jpg формата с использованием библиотек stegano и steganocryptopy. 🔥 Доступ в приват | Поддержать проект: https://boosty.to/pythontoday https://www.patreon.com/pythontoday https://yoomoney.ru/to/410019570956160 🔥 Стать спонсором канала: https://www.youtube.com/channel/UCrWWcscvUWaqdQJLQQGO6BA/join Таймкоды: 00:00 - Интро 00:15 - Что такое стеганография 01:15 - Установка необходимых библиотек 01:40 - Запись сообщения в png изображение 02:34 - Чтение сообщения из png изображения 03:24 - Запись сообщения в jpg изображение 04:06 - Чтение сообщения из jpg изображения 04:34 - Запись текста в изображение с использованием ключа 06:30 - Расшифровка текста из изображения с использованием ключа *****Ссылки***** Код проекта на github: https://github.com/pythontoday/steganography И в telegram канале: https://t.me/python2day *****Соц.сети***** Telegram: https://t.me/python2day

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