Go for Steg a nice software also if closed source! You want a software easier to use but that don’t let you know what’s doing exactly ? $ outguess -k "my_passwd" -r myoutput.jpg mysecret.txt You can retrieve data from an image in the following way: Total bits changed: 590 (change 540 + bias 50) It keeps track of the bits that have been modified previously and locks them. By altering the seed, outguess tries to find a sequence of bits that minimizes the number of changes in the data that have to be made.Īdditionally, Outguess allows for the hiding of two distinct messages in the data, thus providing plausible deniablity. It is embedded in the data along with the rest of the message.
A seed can be used to modify the behavior of the iterator. Outguess uses a generic iterator object to select which bits in the data should be modified. Currently only the PPM, PNM, and JPEG image formats are supported, although outguess could use any kind of data, as long as a handler were provided. The program relies on data specific handlers that will extract redundant bits and write them back after modification. The nature of the data source is irrelevant to the core of OutGuess. OutGuess is a universal steganographic tool that allows the insertion of hidden information into the redundant bits of data sources. Try to get information about embedded data? (y/n) Outguess Try to get information about embedded data? (y /n ) # steghide info myimage.jpg "myimage.jpg": After I’ve installed Steghide I can open a terminal and just type: In this example I have files called myimage.jpg and mysecret.txt in my home folder.
Outguess orginial install#
The last release of this software it’s 10 years old, so it’s not exactly somethign new, but teh good news is that you should find it in the repositoy of any distribution, so install it with your package manager such as yum, apt or emerge.īefore starting make sure you have a suitable image for hiding information in it, and the information that you want to hide in a. support for JPEG, BMP, WAV and AU files.embedding of a checksum to verify the integrity of the extracted data.The color- respectivly sample-frequencies are not changed thus making the embedding resistant against statistical tests. Steghide is a steganography program that is able to hide data in various kinds of image- and audio-files. Generally, messages will appear to be something else: images, articles, shopping lists, or some other covertext and, classically, the hidden message may be in invisible ink between the visible lines of a private letter.Īnd now that we have saw the definition of this word, let’s take a look at three open source programs for Linux that you can use to play with this concept: Steghide and Outguess and one closed source Steg The first recorded use of the term was in 1499 by Johannes Trithemius in his Steganographia, a treatise on cryptography and steganography disguised as a book on magic. The word steganography is of Greek origin and means “concealed writing” from the Greek words steganos (στεγανός) meaning “covered or protected”, and graphei (γραφή) meaning “writing”. 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, a form of security through obscurity.
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