Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [steganography]

Steganography is the art and science of writing hidden messages in such a way that no one, apart from the sender and intended recipient, suspects the existence of the message. While cryptography protects the contents of a communication, steganography aims to prevent others from learning that a communication even occurred.

0
votes
1answer
35 views

How to steganographically embed data in cropped/resized images?

The problem: An artist posts an image of their work online with a creative commons attribution licence (on site A), someone reposts the image with attribution on another site (site B), the internet ...
2
votes
2answers
71 views

Is steganography valid only for digital images or also for printed images?

If I embed some information in an image using steganography and then I print that image, will I be able to retrieve information from the printed image or not?
1
vote
2answers
78 views

How can I retrieve data embedded in an image with steganography?

I want to know is there any way to retrieve data embedded in a steganalised image by just scanning the image with mobile scanner? Just like qr code scanning
0
votes
0answers
35 views

Can I use steganography to detect data loss that occurs due to gradual degradation in quality in sequential printing of black and white noise texture?

I want to detect original print and a reproduced print. So if I embed some information in this kind of noise texture, after reproducing the original print there might be some loss in information due ...
2
votes
1answer
808 views

Can one hide a text in an image and then hide that image in another image? [closed]

Using a steganographic algorithm like least significant bit, can one hide a text in an image and then hide that image in another image?
1
vote
0answers
70 views

Ciphertext indistinguishability under a noisy channel w/ error correction

The objective is to broadcast information over a noisy digital channel (corruption rate of say, 10-20 %, where bits flip). Assume the broadcasting software is public and there is no possibility of ...
1
vote
1answer
113 views

Key-Exchange in Steganography

I know there are key-exchange methods in Cryptography. But in case of Secret-key Steganography, what actually stego-key means and how can we use the key and once used how we exchange that with the ...
1
vote
0answers
27 views

What are ZK and Fusion algorithms in image steganography

in the literature I have found some algorithms mentioned as ZK and Fusion in image steganography. But I couldn't find any detailed information about these algorithms. Could someone please help to ...
2
votes
0answers
104 views

How should we assess the quality of steganography?

I am asking this question instead of extending the discussion of another question (Perfect Steganography). I did try starting a chat room (https://chat.stackexchange.com/rooms/87636/perfect-...
3
votes
0answers
102 views

Old French Cipher w/ Text Hidden In Drawing

I'm trying to find a cipher challenge I saw a few years back, it was an old drawing (I think 1800's or earlier) with clouds and stars on it and French text was hidden in the image. Does anyone happen ...
2
votes
1answer
1k views

Extracting the hidden text off an image embedded with steganography

Is it possible for me to extract the hidden text off a stego-image without using the same application that the hidden text was hidden with. I used 5 applications that do steganography such as, ...
16
votes
4answers
5k views

Why doesn't steganography increase the size of an uncompressed image?

So I have this question. I downloaded a .BMP off google due to .BMPs being not compressed. Just a 1024x768 .BMP image which its size os of 2.25Mb. I put the image in a steganography application.. ...
0
votes
3answers
145 views

Hide secrets in an article composed with Machine Learning?

Say that Alice wants to communicate with Bob, but she does not want any direct contact with him. Instead, Alice will put the secret in public, such as a discussion board, and Bob will come there to ...
2
votes
1answer
114 views

Understanding fail-stop subliminal channels

It has long been known that randomness can be used to create subliminal channels (see Simmons' "Prisoner's problem" in 1983) and that preventing such subliminal channels is hard. For the case at ...
7
votes
2answers
441 views

Perfect Steganography

History contain many example of old steganography. We also have digital steganography. Is there any kind of “Perfect Steganography”, in a sense that only the designer can extract the concealed ...
0
votes
2answers
356 views

What is the role of steganography in network security?

Quick definition: Hiding secret messages inside what seem to be harmless messages is nothing new. The word steganography itself originated in Greece and means “covered writing”. During important ...
0
votes
4answers
882 views

In English, are there any words which encrypt to other words under the Caesar Cipher?

Are there any words in the English language which, when encrypted using the Caesar Cipher with any key, result in another English word? How may one go about determining which Caesar shifts are weakest ...
1
vote
1answer
80 views

Is a singular LUKS volume with different passwords that unlock different filesystems possible?

So it's hard to make sense out of the title. Let me elaborate: In LUKS, you can have multiple passwords that unlock the same volume (due to their "unified key setup" where they have a single master ...
1
vote
1answer
62 views

Extracting secret image from cover image

I want to develop a steganography project with using exploiting modification direction method. I started to try and understand how the method works, but I have some questions about decryption. I hid ...
12
votes
2answers
4k views

Why did Histiaeus tattoo his slave's head?

The story is often told that Histiaeus tattooed a secret message on his slave's head, waited for his hair to grow back, then sent him off to Miletus. Why would he have done this? The story is usually ...
0
votes
1answer
50 views

Does limiting the sales market to U.S. only, releive my application of Export Admin Regs? [closed]

I have a steganography application that uses one-time-pad encryption. Obviously, key lengths can be very long. If I were to limit the sales market on the Microsoft Store to U.S. only, would that be ...
0
votes
1answer
66 views

Pad ciphertext with arbitrary number of bits

I have a symmetric-key encryption scheme. I think the output from this scheme (MAC + IV + CBC ciphertext) should already be practically indistinguishable from random, but I would like to pad the ...
5
votes
2answers
175 views

Steganography in speech by adding extra “filler” syllables [closed]

PREAMBLE About 20 years ago, when reading a novel (set in late 1800) by some classic Russian writer I came across very curious example of steganography. The two main characters were peasants who got ...
1
vote
1answer
7k views

Uncovering file hidden in .BMP

I've recently been linked by someone to this particular puzzle which seems to point to a hidden file within the image. The clue given to me was "anagram" although I could not make much sense of it. ...
1
vote
3answers
2k views

Steganography - How many bytes of information can you hide in a $1024 \times 768$ photo?

I have a photo with a resolution of $1024 \times 768$ which means $786432$ pixels in total. Let's suppose it's a 24-bit color RGB image (so 1 pixel = 3 bytes = 24 bits) and I want to hide information ...
0
votes
1answer
173 views

Standard format to store text in LSB steganography?

I am trying to understand how text is stored in images in LSB. If we consider a 24 bit image, we have 3 values per pixel (RGB). So we can store 3 bits in a pixel. So how do we store 'A' or any other ...
8
votes
2answers
1k views

Determine whether bit sequence is hash?

I would like to know whether it is possible to determine whether a value of for example 256 bit length is a SHA-256 hash or a random, equally distributed value. Is ...
1
vote
0answers
179 views

Algorithms of steganography [closed]

Recently I'm working on steganography and I want to know that what are the main steganography algorithms and how they work. I'll be happy if you help me. thanks.
0
votes
1answer
478 views

Is my high school cryptography/steganography science fair project practical?

I'm a 12th grade student interested in a science project in cryptography and steganography for my school's science fair. I chose this path of computer science partly because my coding skills are weak (...
0
votes
1answer
3k views

WAV file steganography

I'm trying to find hidden message in wav file. It's song not some noisy sound. My question is where should I look for message in data RIFF, FMT or DATA chunk. Should i convert file to binary or ...
0
votes
3answers
493 views

Is there a way to cleanse a picture of information from steghide?

Recently I learned of the steghide application (a command-line tool allowing the use of steganography, the art of hiding information inside other information, used in practice with JGP and WAV files ...
-2
votes
1answer
270 views

Is there any tool for text steganography? [closed]

i wanna ask anyone that know is there any tool or software to hide text in text it self, that we usually call it as text steganography?
-1
votes
1answer
153 views

Performance checking of Image Steganography Technique

I am working with image Steganography LSB technique (Lossless Compression) as the performance of it is measured in PSNR value. Higher PSNR value greater the performance. But what is the standered ...
5
votes
1answer
460 views

Binary format of encrypted PGP private key?

Short Version of the Question: I would like to remove any predictable information from an encrypted private keys binary representation. Does anyone have a hint where the binary format for encrypted ...
2
votes
2answers
112 views

Practicality of codebook in current-day secret communications

Codebook appears, if I don't err, to be an antiquitated topic rarely touched upon in discussions of modern cryptography. Couldn't codebook nonetheless be of high practical utility and even be ...
3
votes
5answers
790 views

How to disguise ciphertext

If I want to have a secret conversation, then I can encrypt it (with OTR etc). However, since big brother watches all communication, sending encrypted data will likely raise flags. Does anyone know of ...
1
vote
0answers
201 views

Data integrity using steganographic methods

I am looking for a lightweight and fast (almost real time) data integrity checker for a very time critical application. Is it possible to provide data integrity using a steganographic method, lets say ...
3
votes
2answers
237 views

Are there any practical methods of steganography?

There isn't a whole lot of information on steganography in the modern age, from what I can tell. A google search for steganography usually brings up a list of very impractical methods (e.g. tattooing ...
1
vote
1answer
864 views

Why does image size increase after steganography?

I am working on a steganography technique. Sometimes I need to send my steganographed images online to my friends but in the process the image gets compressed destroying all the data. I found ways to ...
0
votes
1answer
284 views

Steganographic embedding of an RSA-encrypted message into an image

The goal is to combine the RSA encryption system with the LSB steganography system in a BMP image. Since every pixel of the image is an integer between 0 and 255, if we choose $p$ and $q$ such that $N ...
1
vote
2answers
703 views

Is there an algorithm to hide text in another text, while preserving the meaning of the latter?

Is there a way to hide a text message $A$ inside another text $B$ using a cryptographic cipher/algorithm, while preserving the sense/meaning of $B$ and without anybody being able to notice there is a ...
1
vote
0answers
116 views

Is it possible to combine cryptography with steganography [closed]

Definitions: M - original message, Me - encrypted message M, S - watermark message, Ms - message M with steganography watermark S, e - encryption private key, d - decryption key (it is private too), s ...
1
vote
1answer
149 views

The example of Wikipedia on steganography doesn't work

I was reading some stuff on steganography. There is an example on the wikipedia page : However, I tried many software to get the hidden image, but no one worked. Is there anything wrong about that? ...
2
votes
2answers
625 views

Is it worth hiding an AES encrypted text string in a PNG image for better security?

I need advice as to whether it is worth the extra "security" and processing of an AES encrypted text string to be hidden in a PNG image as opposed to an AES encrypted text string to be saved in a read-...
7
votes
2answers
639 views

Maximum steganographic embedding rate not detectable by steganalysis?

When using advanced steganographic methods (like F5) what is the approximate maximum embedding rate when advanced Steganalysis (like a machine learning approach) can no longer reliably detect it? I ...
2
votes
0answers
191 views

Detecting steganography by analysing non-significant data entropy?

I am not thinking only steganography in images, I think it is also possible to encode data for example into the length of spaces of a clear html text. I suspect, the steganography changes (elevates) ...
3
votes
1answer
405 views

Which is the most secure steganography technique? [closed]

Just like we have AES in crypotography, which is the most secure technique in Steganography? I am looking for a technique in which the standard image characteristic modifications it does go undetected(...
1
vote
1answer
503 views

Turning data into seemingly random noise

I am currently working on a python script that does image steganography, altering the least significant bit on each channel of the image. Now imagine encrypting a file with a bunch of null bytes, or ...
2
votes
1answer
158 views

Defining format-preserving encryption for natural language

Assume we have plaintext in natural language. Can we use format-preserving encryption in such a way that the produced ciphertext cannot be distinguished from natural language?
0
votes
1answer
1k views

Steganography Decryption From Completely Black Image

I am trying to decrypt a completely black gif that I know has been encrypted by some sort of steganography. I've tried subtracting the bytes of the images with each other, and so far I have gotten a ...