Steganography Image Decoder Jpeg

The image comes preinstalled with many popular (see list below) and several screening scripts you can use check simple things (for instance, run check_jpg. For now, PNG provides cross browser steganography compatibility because it employs lossless compression. Easiest Steganography Tool for Windows. A distinctive function of the application is that it is Steganography software which encodes the image and encrypts the photograph file along with the password safety. The color- respectivly sample-frequencies are not changed thus making the embedding resistant against first-order statistical tests. It doesn't even have the same root ("stega" vs. It's free to sign up and bid on jobs. In Simple words "Steganography" is a technique to hide messages or information within other non-secret text or data. Some common Image Steganography Technique in Spatial and Transform Domain [146] has been discussed below. Output file will act like ordinary image file and one cannot tell that the image was modified just by looking into it. My mini project is on least significant bit steganography my mini project is on least significant bit steganography this is the art of hiding data within a cover image or audio in the least significant bit a type of security through obscurity in which you hide the message that nobody but the recipient and the sender is aware of its existence this operates in the principle that the human eye. jpg” secret color image are 4. 1 Associate Professors,Computer Science Engineering, Panimalar Engineering College Chennai,Tamil Nadu,India. 999 JPEG q=80. What is steganography ? It is a technique of hiding file or messages inside another file. STEGANOGRAPHY : Any file like. When you submit, you will be asked to save the resulting payload file to disk. Steganography means "covered writing" in Greek; it is the science of writing hidden messages so that no one besides the sender and intended recipient suspects there is a message — security through obscurity. The cover object can be an image, audio, text or other file formats. The encoder, seen in Figure 4, takes an image with steganography as its input. Images are a good medium for hiding data. About Departments; Computer Science and & Engineering. In Section 5 a conclusion is reached. During reading the papers, I have one question. It's a C#. However, when I tried it on jpg after extraction I get wrong data. As you know steganography is a technique to hide data inside image, audio or video. Download Image Steganography(JPEG) for free. Hide a message in the image (. It is just a good source of very large strings. An individual would get files embedded into a snapshot which is equipped with any sort of snapshot layout like JPG, GIF and animated GIF, PNG, BMP and many more. that of generating night time images from day time images, for training a semantic segmentation task. Steganalysis: Your X-Ray Vision through Hidden Data. An overview of the different kinds of steganography is given at a later stage. I am providing a list of free Steganography tools for Windows 10. Unfortunately, sending large amounts of raw audio and image data can arouse suspicion, and the pseudo-English encoding schemes are not sophisticated enough to fool a human observer. Introduction: Steghide is a steganography program that is able to hide data in various kinds of image- and audio-files. if the key is 231321, the first pixel of the image "imagedetexte. 3: output an RGB image. Image Steganography: Image Steganography Digital image Architecture: Images are composed of dots called pixels. The supported formats include JPG, JPEG. Included are black&white, color, paletted, with alpha channel, with transparency formats. Keywords – Annotation, Steganography, Image steganography, medical image steganography. Download ImgStegano. The study on JPEG steganography and steganalysis is a hotspot in the field of. The most popular cover object is image to perform steganography. First, I use the very simple uncompressed flat 24-bits BMP image format as an example, because it's very easy to work with. Free to use. Image Steganography is the technique of hiding the data within the image in such a way that prevents the unintended user from the detection of the hidden messages or data. For achieving this we will use a method that is known as "Steganography". For now, PNG provides cross browser steganography compatibility because it employs lossless compression. JPEG (JPG), TIFF, PNG, BMP image formats are supported. The most familiar technique employed in the steganography is LSB in BMP images bitmap images are not optimized in size like JPEG so there is chance of having higher redundant pixels and in turn we have least significant bits making this process more reliable for steganography. Webmasters almost never uses BMP files that large, especially for an image promoting a movie, where JPEG easily saves an other of magnitude on bandwidth usage. The most common and popular method of modern day Steganography is to make use of LSB technique. About HTML Preprocessors. Generally, the hidden messages appear to be (or be part of) something else: images, articles, shopping lists, or some other cover text. Just paste your base64 and it will automatically get converted to an image. Do you know about implementation that could survive recompression? - user1563721 Jan 1 '14 at 9:53. Highly Secure Images Steganography Techniques Based on LSB, X-Box Mapping and Huffman Encoding. Easiest Steganography Tool is an Easy-to-use Steganography software that is free and portable Features: Hide a message in the image. A Steganography Model based on Discrete Cosine Transform and Huffman Coding (IJSRD/Vol. Easiest Steganography Tool Free Download - Hide the data into the PNG image. When using an image that I created in Paint, I have no issues with distorting. The most common form of steganography for digital images is embedding a binary message in the least significant bit (LSB) of the pixels. Download Image Steganography(JPEG) for free. Included are black&white, color, paletted, with alpha channel, with transparency formats. You just need to use the least significant bits of the least significant components of the compressed data. Krishnamoortyhy, 1 Dr. Base64 image encoder decoder Base64 image decoder encoder online - this online tool lets you convert base64 string to image and vice-versa. There are no ads, popups or nonsense, just an awesome base64 image decoder. LSBSteg module is based on OpenCV to hide data in images. What steganography does is it allows you to do is hide files within other files. jar which showed me that there was some interesting text at the top of the image:. 13: 'Easiest Steganography Tool' is an Easy-to-use Steganography software that is free and portableFeatures:1. An Optimization of Text and Image Steganography using LSB Technique Sonal Kamal Kumar Ranga M. There are no ads, popups or nonsense, just an awesome base64 image decoder. Moreover, steganographic systems. Unfortunately, sending large amounts of raw audio and image data can arouse suspicion, and the pseudo-English encoding schemes are not sophisticated enough to fool a human observer. Decode image data from gif, jpeg, png, tiff or bmp. To extract the hidden data the following command is used. LSB audio steganography¶ Principle¶ Similar to the LSB steganography in image steganography, there is also a corresponding LSB steganography in the. It use steganography and cryptography techniques to hide information inside uncompressed and compressed images. Steganalysis: Your X-Ray Vision through Hidden Data. Steganography is a form of obfuscation that is quite different from cryptography, which is the practice of writing coded or encrypted messages. This page is an archive of helpful tools and resources one might use in the course of solving puzzles typically found in ARGs, including encipher/deciphering, audio encoding, and steganography. Hide image in another image4. The basics of image steganography, factors for evaluating an image steganography are covered in the paper. Best Tools to Perform Steganography [Updated 2019] Posted in General Security, Hacking, Incident Response on May 17, 2019 Encoded image will have the secret message inside the image. - Ability to find wiped/deleted images from disc image file. Definition Steganography is the art of hidding a message in another common message. We present Android software to encode and decode stego-images with OutGuess using a secure key, and detect whether a digital image is a stego-image encoded with OutGuess. Large edge detected image is preferred for secure Steganography. 4 should be able to handle PNG and JPG files. During reading the papers, I have one question. Abstract—Steganography is a form of security technique that using ambiguity to hide a secret message within an ordinary message between senders and receivers. Convert Base64 to PNG online using a free decoding tool that allows you to decode Base64 as PNG image and preview it directly in the browser. Base 64 Encoder / Decoder. StegExpose is a steganalysis tool specialized in detecting steganography in lossless images such as PNG and BMP (LSB - least significant bit type). Digital Watermarking. Writing on Wet Paper Jessica Fridrich, Miroslav Goljan, Petr Lisoněk, David Soukal Abstract — In this paper, we show that the communication channel known as writing in memory with defective cells [1][2] is a relevant information-theoretical model for a specific case of passive warden steganography when the sender embeds a secret. , JPEG, GIF, etc. The Cover image is the image that should ‘cover’ the secret image. Each pixel is represented as 3 bytes : one for Red, one for Green and one for Blue. The class LSB contain an encoder and a decoder. From its humble origins that involved physically hiding communications and using invisible inks, it has now moved into the digital realm, allowing people to slip critical information into seemingly mundane files. Now, steganography is the altering of bits in either an image, sound document, or even another document, to hide a message. image after crop-and-replacement and JPEG lossy compression watermarked SARI image authentication authentication & recovery Invisible Watermark Example: Self Authentication-and-Recovery Images (SARI) What is Watermarking ? – Multimedia as a Communication Channel Information W Encoder Decoder W § Analog Communication --§ Encoder/ Decoder:. Cox Department of Electronic and Electrical Engineering, University College London, United Kingdom ABSTRACT Correlated steganography considers the case in which the cover Work is chosen to be correlated with the covert message that is to be hidden. Base64 image encoder decoder Base64 image decoder encoder online - this online tool lets you convert base64 string to image and vice-versa. make the following change and you can decode the message accurately, because you are using JPG and jpg using lossy mode to. Let’s take the eye picture from the header of this page and encode it into a wav file. "The goal of this research was to demonstrate that JPEG steganography can be performed on social media where it has previously been impossible," Campbell-Moore tells Danger Room. It is not necessary to conceal the message in the original file at all. Use this free tool to turn binary data into text (encode) or text into binary (decode). A short introduction to the JPEG decoding process can be found in chapter 2 and appendix of the report "Design and implementation of a JPEG decoder" by Sander. Steganography is the science and art of hiding data, in which only the sender and receiver knows how to fetch the data. Trying to get the hidden message from hglogosteg. 03/30/2017; 2 minutes to read +5; In this article. The technique adopted is the variation in the LSB planes of the. Most of the existing image steganography methods modify separate image pixels, and random noise appears in the image. government is concerned about the use of Steganography. SG-N systems with blind decoder. Just MO, but steganography puzzles that requires the use of a particular site should not be allowed. Many people want to hide their private files one way or another. Later, decode your sensitive information using the keyword that it was encoded with. Now you have to create a new image by combining the pixels from both images. This example removes the size requirement. Steganography in java using LSB technique for hiding message in PNG image & using AES and SHA 2 algorithm for encryption/decryption of message. Steganography is derived from the Greek for covered writing and essentially means "to hide in plain sight". But according to the proposed method cover image will not be changed at all after implementation of. Mostly images are used to hide the data. How To Hide Secret Text Behind Image Using Steganography. Convert your image files between many different image file formats. Though the forms are many, the focus of the software evaluation in this paper is on the use of images in steganography. LSB steganography embed the secret data in least significant bit of digital image and MSB steganography embed the secret data in most significant bit of digital image. The main idea of such approaches is to embed in a single container (digital image) more than one message. Steganography. The study on JPEG steganography and steganalysis is a hotspot in the field of. By and large, the "Base64 to PNG" converter is similar to Base64 to Image, except that it this one forces the MIME type to be "image/png". Cache is not located at the posted coordinates. Main Page > List of Investigations > ARG Toolbox. In this paper we propose an adaptive data hiding method that divides the host image in suitable and ineligible blocks. Also, other tools might not be able to extract information from encrypted images created by this tool. Cryptography and steganography together provide a higher security level to the secret data. image is reconstructed by a standard decoder, image quality will be only. The Process of Encoding and Decoding of Image Steganography using LSB Algorithm Ravinder Reddy Ch1 Roja Ramani A2 1 Department of Master of Computer Applications, Teegala Krishna Reddy Engineering College, Medbowli, Meerpet, Hyderabad 500 097 [email protected] According to edgespot research, “By examining the above Javascript code, we figured out that the code’s function is to read and decode the “message” hidden in the icon’s stream. As you can see below, is my project based on online Image steganography. In Figure 7, two files on the hard drive are examined and we can see the output from xsteg. So, one can easily use this tool to hide data into a JPG image file. steganography; image; hide; secret; array; encode; decode; least; Simple loader that sets the sRGB png header to perceptual to ensure that browsers decode the image into the exact original pixel values. The embedded codes for css, html and xml are also ready for you. 📗 Without any further delay, let's Get Started. The first one contains essential data which are intended to be securely transferred between different parties, the latter is a. Over the last couple of months, I have been developing an online image Steganography tool designed to combine and enhance the features of other separate tools. One of the most common steganography tricks is to hide a file inside of an image. The most common form of steganography for digital images is embedding a binary message in the least significant bit (LSB) of the pixels. Steganography is a form of obfuscation that is quite different from cryptography, which is the practice of writing coded or encrypted messages. This is a easy-to-use tool you have never seen Free Download (Ver 19. Recently, computerized steganography has become popular. ImageMagick uses an ASCII string known as magick (e. ”; and “More than cryptography, steganography is your secret weapon to communicate freely. JPG and PNG formats. This secret data after being embedded in the carrier image forms a steganography object which also may include a key that defines the encryption and decryption technique. jsteg is a package for hiding data inside jpeg files, a technique known as steganography. txt /b stego. org 3 | Page The DCT issued in JPEG and other compression methods. Compare this method to simply sending someone an encrypted piece of text. The technique is known as steganography -- the art of hiding information in plain. Three basic categories of Text Steganography 3. CUDA JPEG codec developed by Fastvideo is a blend of strict compliance with standards and shocking encoding and decoding speed comparing with the fastest existing commercial solutions. Moreover, PGD randomly selects starting points around the original images, which makes the embedding non-deterministic (i. The hidden secrets are called real and false messages, respectively. It is supposed to serve people’s needs for the freedom of communication even in those countries which break human rights by forcing some kind of Internet censorship or even denying to use cryptography by law. The rest of the paper is organized as follows. It allows for the storing of text or image data within an existing image without the image of the original being affected (it is a little bit but you’d be doing well to notice). No Name of Image Steganography Tool. zip has the following entries. Unfortunately, sending large amounts of raw audio and image data can arouse suspicion, and the pseudo-English encoding schemes are not sophisticated enough to fool a human observer. if the key is 231321, the first pixel of the image "imagedetexte. Sometimes the pattern is. Wie das bekannte JPEG ist es von der Joint Photographic Experts Group herausgegeben. The Generic Image Decoder is a package for decoding a broad variety of image formats, from any data stream, to any kind of medium. Since the author is my compatriot at NetBSD, I don't like seeing this go unanswered. As a second layer. SilentEye is an easy to use cross platform steganography program that lets you hide sensitive message behind image or in audio file. Generally, the hidden messages appear to be (or be part of) something else: images, articles, shopping lists, or some other cover text. DarkJPEG is a new generation open source steganography web service. Download Steganography Free Java Code Description. Hide text in images using steganography! GitHub Gist: instantly share code, notes, and snippets. Recently, computerized steganography has become popular. Figure 11 shows the output from xsteg, a graphical interface for stegdetect, when used to examine two files on a hard drive—the original carrier and steganography image for the JPEG image shown in. Steganography is a useful tool that allows covert transmission of information over an over the communications channel. In this paper, we present a novel image steganography method which is based on color palette transformation in color space. jpg file? Joe Phillips December 11, 2010. BMP, GIF and JPG supported. The main objective of this paragraph is a detail which is dedicated to the uncompressed image steganography algorithm. Hide A Message Or File In An Image With Free SilentEye Steganography Tool. The Huffman table utilized at encoder and decoder side must be same. It supports hashing and encryption too. In the first step, the reference image is replicated using different image operators (like JPEG compression, average filtering. The code is quite simple to understand; If every first bit has been used, the module starts using the second bit, so the larger the data, the more the image is altered. And if you w. If you save it to your machine and open it up with an image viewer(e. Each pixel is represented as 3 bytes : one for Red, one for Green and one for Blue. characteristics of the cover image such as PSNR and histogram diagrams will be changed. A Steganography Model based on Discrete Cosine Transform and Huffman Coding (IJSRD/Vol. After giving some information on how to do it, we give source code that was developed with the Easy BMP library. ImageMagick uses an ASCII string known as magick (e. Do you know about implementation that could survive recompression? – user1563721 Jan 1 '14 at 9:53. A simple steganography trick that is often used for watermarks instead of outright steganography is the act of hiding nearly invisible text in images. Generally, the hidden messages appear to be (or be part of) something else: images, articles, shopping lists, or some other cover text. Aishwarya 2. - Supports. Mostly images are used to hide the data. how i hide things in images – just append bytes at the end of the file. Outguess-Rebirth is a portable steganography tool for Windows, allows a user to embed hidden data inside a image JPEG. images, or anything that can be embedded in a bit stream. This is a client-side Javascript tool to steganographically hide images inside the lower "bits" of other images. The technique is called steganography and we have two posts on it - Become a Secret Steganographer: Hide and. If you are decoding a binary file, use the 'DECODE AND DOWNLOAD' button. The QuickCrypto steganography function allows carrier files to be photographs, drawings, images (. He released libbpg (with source) as well as a JS decompressor, and set up a demo. A Chrome extension is also available to decode images directly on web pages. Load base64 – get an image. I am trying to overcome a CTF steganography challenge. Krishnamoortyhy, 1 Dr. OpenPuff is a professional steganography tool:. Pughazendi 2, S. The download file Steganography-master. Description A compilation of a set of images created to test the various color-types of the PNG format. the output image format supported is only BMP, but the developers are working on a JPG plugin as well. How can I decrypt stego image ? bottom sides of each block, because that's how JPEG achieves image compression. The JPG format is often used in digital camera memory cards. You change the extension of image but you can’t find anything there. Add an optional key to encrypt your data even better and click submit to hide it in the image. 1 How can we improve JSteg? How did we improve LSB in the Spatial Domain? Solution Choose random coefficients from the entire image. You set these values when you create the JPEG decoder object with. Such audio usually has a more pronounced feature that sounds a bit murmur or harsh. A key is used to decode/decipher/discover the hidden message. Steganography is best done using BMP (Bitmap) images as they use the 8-bit color scheme. , or a ttempts to display a compressed image format, e. That method works well, but is annoyingly restrictive. In section 3 the most popular algorithms for image steganography are discussed and compared in section 4. The digest also can be overlayed onto the image with a steganography algorithm. StegSpy will detect steganography and the program used to hide the message, checking for classical. A steganography software tool allows a user to embed hidden data inside a carrier file, such as an image or video, and later extract that data. I'm not getting any errors but don't know why the message could not be hidden inside an Image file. StegSpy will detect steganography and the program used to hide the message, checking for classical. A short introduction to the JPEG decoding process can be found in chapter 2 and appendix of the report " Design and implementation of a JPEG decoder " by Sander Stuijk. Steganography can be used to conceal almost any type of digital content, including text, image, video or audio content; the data to be hidden can be hidden inside almost any other type of digital. Steganography is the art of covered or hidden writing. Moreover, steganographic systems. An overview of the different kinds of steganography is given at a later stage. It supports various common image and audio formats including BMP, JPG, PNG, GIF, TIF, and WAV. bmp" will be encoded in level 2 (ie "green"), the second pixel is encoded in the plane 3 (ie "blue"), the third in a plan, the fourth in the plane 3, the fifth in the plane. Abstract: We investigate image steganography under re-encoding of images. This paper also analyses the performance of some of the steganography tools. On the outside the JPG image is a normal JPG image; it even opens and is viewable like a JPG. Steganography is the art of hiding things in plain sight: for example, secretly encoding a message in an image by flipping the least-significant bit in each pixel to create a binary string that. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract — In this paper, we present image steganography based on entropy thresholding scheme via digital images that contains redundant information can be used as covers or carrier to hide secrete message. Steganography is the practice of concealing a file, message, image, or video within another file, message, image, or video. Page 1 of 3 - Is it possible for a virus to be embedded in a image? - posted in General Security: This one question which Ive always pondered about can a virus be embedded in a image (jpg,gif,png. The goal of this test image is to test the capabilities of automated tools that search for JPEG images. A simple pseudo-code algorithm to hide a message inside a JPEG image. In a security analysis on spatial domain steganography for JPEG decompressed images has been presented. jpg file? Joe Phillips December 11, 2010. After giving some information on how to do it, we give source code that was developed with the Easy BMP library. Convert your image files between many different image file formats. The text can be hidden by making it nearly invisible (turning down it's opacity to below 5%) or using certain colors and filters on it. Steganography: A Safe Haven for Malware. Just select the source file in which you want to hide the secret message, and then select the file to hide or write the text message to hide. StePEG is an application of Steganography to JPEG images. It can take a given message and hides it inside a given image file so it is not perceptible. With Stegosuite you can easily hide information in image files. by and how to use it. In earlier times it was used using lime and paper. GIF images),Raw images(i. 2 Image Steganography Image Steganography is widely used for message hiding process because this is quite simple and secure way to transfer the information over the communication network on the internet. > Audio Steganography, how does it work? In Abstract: The process of hiding file (audio, text, picture, …. Anti-Steganography: Combating External Threats and Data Loss in Images Anti-Steganography | May 2019 www. What is steganography ? It is a technique of hiding file or messages inside another file. It is quite easy to append arbitrary data to JPEG files [0] and however there is no guarantee that it will survive image processing, so it was necessary to hide it within an ICC profile. Top free jpg decoder downloads. Step 4: Keep both file i. These are but a few of the possible uses of image steganography. Steganography, the art of hiding of information in apparently innocuous objects or images, is a field with a rich heritage, and an area of rapid current development. There are multiple programs uses to decode Digital Image Steganography. image is reconstructed by a standard decoder, image quality will be only. 3 Confidential Encrypted Data Hiding and Steganography is an embedding technique to hide the data in the form of an image or text. Net based Image Steganography project to support JPEG steganography. - Ability to decode the embedded message from an image, if there is one. HTML preprocessors can make writing HTML more powerful or convenient. That method stores bits of information in the least significant bits of selected pixels scattered around the image. Steg Easy cross platform steganography is a cross-platform and portable software, written in C++. SilentEye is above all, it makes steganography a breeze. Steganography: A Safe Haven for Malware. Image steganography is divided into spatial and transform domain. After giving some information on how to do it, we give source code that was developed with the Easy BMP library. , JPEG, GIF, etc. Free online base64 to image converter. 1, can be summarized in five main steps: 1. How it works How to defeat it. Writing on Wet Paper Jessica Fridrich, Miroslav Goljan, Petr Lisoněk, David Soukal Abstract — In this paper, we show that the communication channel known as writing in memory with defective cells [1][2] is a relevant information-theoretical model for a specific case of passive warden steganography when the sender embeds a secret. It is not necessary to conceal the message in the original file at all. Privacy notice: By enabling the option above, your. jpg) and then decode this file, the hidden. capacity is independent of the Gaussian noise known to the encoder but not to the decoder, in the wet paper scenario, quite similarly the channel capacity does not depend on the recipient’s knowledge of the selection channel. The following examples show how to decode and encode a JPEG image using the specific JpegBitmapDecoder and JpegBitmapEncoder objects. work, we implement a JPEG steganography scheme that perfectly restores the DCT coefficient distribution while hiding several thou-sand bits into images (e. It can hide messages or even other files within image files, and can also decode hidden messages/files back. 📗 Without any further delay, let's Get Started. Also, the "append a bunch of junk at the end of a JPEG file" isn't really steganography, I don't think. Download this example. 1 JPEG‐based image steganography. You can also encrypt your information in MP3, AVI, WAV, etc. Section 2 reviews the related work and section 3 presents the proposed algorithm. Output file will act like ordinary image file and one cannot tell that the image was modified just by looking into it. In Image Steganography, the message is encrypted with an image by changing the pixel bits. It supports various common image and audio formats including BMP, JPG, PNG, GIF, TIF, and WAV. There are now a lot of softwares now available in the market for Steganography. Cache is not located at the posted coordinates. Alright, let’s introduce you to the concept known as Steganography, using which anyone can hide his/her secret or confidential information in audio, image or video files easily. These possibilities are found by careful studying the JPEG JPEG encoders, or the steganography algorithm itself. About JPG steganography. This is called asymmetric-key cryptography, because the keys are different to encode and decode the data, algorithms like RSA uses public key cryptography. Just paste your base64 and it will automatically get converted to an image. Since the author is my compatriot at NetBSD, I don't like seeing this go unanswered. It's a C#. Writer, m image. Free online base64 to image converter. Add an optional key to encrypt your data even better and click submit to hide it in the image. So this isn't about steganography, nor about compressing image files in general, but about a specific way to encrypt JPEG files that preserves certain characteristics of JPEGs even when encrypted. However, if you want to play amateur spy decoder, Niels Provos’ Stegdetect is one automated tool for detecting images with steganography embedded messages. In steganography the payload is the data covertly communicated and the carrier is the signal, stream, or data file that hides the payload. jpg file that has coordinates for a geocache hidden nearby. jpg without a password. images, or anything that can be embedded in a bit stream. Also, the "append a bunch of junk at the end of a JPEG file" isn't really steganography, I don't think. To embed a file into a jpeg image, use a command like the following. Compare this method to simply sending someone an encrypted piece of text. • Each pixel of the eight-bit binary number LSB is substituted with one bit of the hidden message. He released libbpg (with source) as well as a JS decompressor, and set up a demo. A steganographic scheme for JPEG compressed image with high capacity and with good quality of the stego-image was presented. bmp or other image file format. In section 3 the most popular algorithms for image steganography are discussed and compared in section 4. We have created fast JPEG codec on NVIDIA CUDA technology. Steganography: Hiding Data Within Data Gary C. A simple steganography trick that is often used for watermarks instead of outright steganography is the act of hiding nearly invisible text in images.