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 ...

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6answers
2k views

Any efficient text-based steganographic schemes?

While there are sophisticated and efficient steganographic schemes with images as cover available, I am yet ignorant of the existence of any fairly efficient and secure schemes with texts as cover. ...
6
votes
2answers
285 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 ...
5
votes
3answers
317 views

Digital identification using steganography, can it be broken?

Digital identification using steganography, can it be broken? I have read a few articles saying that using an I.D. embedded in video, audio, etc can help track down the origin of a copyright ...
5
votes
0answers
103 views

Is F5 still a viable steganography algorithm? [closed]

I am currently developing a steganography application and have been studying the F5 algorithm by Westfeld. I keep on seeing from various literature and open source projects (e.g. from GitHub) that it ...
4
votes
1answer
505 views

Making my steganography code more hard to detect and crack

I'm doing a college project about digital image steganography on MATLAB. So far i've been able to get the help i needed from cool guys on stackoverflow but i now need to make my algorithm more hard to ...
3
votes
3answers
749 views

Is there a cryptographic method to add noise to a plaintext instead of actually encrypting it?

I'm looking for a cryptographic technique that instead of permuting a cleartext, would add noise to the cleartext to obfuscate the true text among a bunch of garbage. For example, a list of 10 ...
3
votes
1answer
168 views

What makes LSBit steganography detectable? And what would help in concealing it?

In a project of mine I took a 24-bit bitmap image and I performed LSBit steganography over it (saved a black and white image inside each of the planes R, G, B) using pixel shuffling and xor ...
3
votes
2answers
76 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 ...
3
votes
1answer
177 views

Detecting steganography in the stream of short messages

I have stream of millions of short n-bit (n<30) messages generated by some random number generator. The source of random number generator is not available to me. I suspect there are messages used ...
2
votes
3answers
159 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 ...
2
votes
1answer
55 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 ...
2
votes
1answer
110 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?
2
votes
0answers
66 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) ...
1
vote
1answer
100 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 ...
1
vote
1answer
73 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 ...
1
vote
2answers
115 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 ...
1
vote
1answer
114 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 ...
1
vote
2answers
200 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
1answer
122 views

How to hide bit frequency of the inter-packet delays covert channel?

I encode a hidden message as different delays between packets of another data stream. My implementation now is that for each bit, if the bit is 0, a inter-packet ...
1
vote
0answers
66 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 ...
1
vote
0answers
55 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
0answers
228 views

Recover a secret message in a .wav file [closed]

First, I apologize for my english, I'll do my best. On my computer, I got a .wav audio file that hides a secret message. I want to recover that message. But I'm stuck and I need your help :). My ...
1
vote
0answers
100 views

Rating a steganographic system using Blum Blum Shub to locate hidden bits

Currently I'm building a toy steganography system based in a web browser. Besides all the obvious issues with building a system requiring extreme privacy into a browser (this is a toy!), I was curious ...
0
votes
1answer
229 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 ...
0
votes
1answer
114 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 ...
0
votes
1answer
59 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 ...
0
votes
1answer
68 views

What approach is used here? [closed]

Here is an image hidding some information. I need to discover, what is the hidden text. I tried to interpret this as 27 letter alphabet(with space) in columns, tried this with Ceasar cipher. No ...
0
votes
1answer
134 views

Testing a steganalysis technique on realistic data [closed]

I'm developing a new image steganalysis technique, and I'd like to test how effective it is in practice. How could I do this? Are there such things as standard "test vectors" for steganalysis?
0
votes
2answers
690 views

How secure is it to use password as AES key?

I am developing a steganography app where user encrypt any file into an audio file. The user can enter a password to protect the hidden data. The same password is converted as a 256 bit key and the ...
0
votes
1answer
72 views

How to establish if a string contains a message

If you have a string S, then the string can be composed of four things: cleartext 'random' data encrypted data compressed or otherwise non-encrypted, but modified, cleartext If you want to see if ...
-1
votes
1answer
242 views

Obtaining a key that's using ice algorithm

I have a text file that has been processed by the SNOW steganography tool that uses ICE encryption. However, I do not know the key that would enable me to decrypt and retrieve the message hidden. ...
-4
votes
2answers
5k views

Algorithm/Technique for Steganography [closed]

What is the most used Algorithm/Technique in Steganography? I made some research about the algorithm/technique and I think Least Significat Bit(LSB) is the most used algorithm, is there any more ...