steganography | Android Steganography Library

 by   stealthcopter Java Version: Current License: Apache-2.0

kandi X-RAY | steganography Summary

kandi X-RAY | steganography Summary

steganography is a Java library. steganography has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has high support. You can download it from GitHub.

Android Steganography Library

            kandi-support Support

              steganography has a highly active ecosystem.
              It has 24 star(s) with 17 fork(s). There are 3 watchers for this library.
              It had no major release in the last 6 months.
              steganography has no issues reported. There are 1 open pull requests and 0 closed requests.
              It has a positive sentiment in the developer community.
              The latest version of steganography is current.

            kandi-Quality Quality

              steganography has 0 bugs and 0 code smells.

            kandi-Security Security

              steganography has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              steganography code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              steganography is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              steganography releases are not available. You will need to build from source code and install.
              Build file is available. You can build the component from source.
              steganography saves you 239 person hours of effort in developing the same functionality from scratch.
              It has 583 lines of code, 48 functions and 24 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed steganography and discovered the below as its top functions. This is intended to give you an instant insight into steganography implemented functionality, and help decide if they suit your requirements.
            • Initializes this instance
            • Create a bitmap with a specific size
            • Helper method to encode the message
            • Run the test
            • Creates a new Steg with the given bitmap
            • Sets the input bitmap
            • Decode binary data
            • Decode the bitmap to a byte array
            • Convert bytes to long
            • Decode a bitmap
            • Decompress a byte array
            • Compresses the given string using GZIP
            • Override this method to handle the action bar selection
            Get all kandi verified functions for this library.

            steganography Key Features

            No Key Features are available at this moment for steganography.

            steganography Examples and Code Snippets

            No Code Snippets are available at this moment for steganography.

            Community Discussions


            JS image pixels change
            Asked 2022-Jan-04 at 08:20

            I have a problem. I am currently working on an project that changes image pixels. I am doing it as a web app using javascript. The problem is that when I change them using getImageData and then downloads the picture with toDataURL and link download it works. But when I then upload the image and read data with getInamgeData some of the pixels change. Where can be the problem and how can I fix it.



            Answered 2022-Jan-04 at 08:20

            I managed to fix it. The problem was that the pixels changed only when the forth value changed- the alpha channel. I suppose it is caused by gamma correction of the web browser.



            Python3 Steganography / stepic / ValueError: Unsupported pixel format: image must be RGB, RGBA, or CMYK
            Asked 2021-Aug-31 at 04:38

            I'm fairly new to python, and I'm trying out Steganography. I'm using the libraries Stepic and Image to try to encrypt user input messages onto any image. My script will do just fine until the very last step, the encryption onto the image. My error is, "ValueError: Unsupported pixel format: image must be RGB, RGBA, or CMYK" I can't think of anything to try so I've come here. Here is my code:



            Answered 2021-Aug-31 at 04:38

            Try converting the image to any supported format before you pass it to stepic.encode(). An example code would be:



            Can AWS S3 detect uploads of malicious .exe files?
            Asked 2021-Jun-01 at 13:05

            Can AWS S3 detect uploads of malicious .exe files?

            What if we have an app that has an upload file function and files are uploaded to s3. What if attacker renames .exe file to .jpg file or insert a hidden file inside an image file (Steganography).

            Is S3 capable of detecting this? or can this be done via bucket policy? if not, whats the solution you can recommend.



            Answered 2021-Jun-01 at 13:05

            By default, Amazon S3 does not detect malicious files. However, there are 3rd party solutions for this. For example:


            In addition, there are other security best practices too:

            Security Best Practices for Amazon S3



            Looping over the threshold area does not change pixel values
            Asked 2021-Apr-30 at 12:13

            I am currently working on a design of steganography system that detects a certain area in an image using several techniques (K-means, Canny edge detection) using Python and OpenCV library. I am facing a huge problem updating the image pixel values to contain my secret data in the least significant bit.

            I started with finding the threshold after several calculations.

            thresh = cv.adaptiveThreshold(imgray,100,cv.ADAPTIVE_THRESH_GAUSSIAN_C, cv.THRESH_BINARY_INV,11,2)

            And to test the area I did the following:



            Answered 2021-Apr-30 at 12:13

            Your issue is that advanced indexing returns copies of arrays, so by doing image[thresh==0][i][j] all the time you modify freshly created copies which are then discarded.

            Let's start with some fake data



            Extract image hidden after EOF
            Asked 2021-Apr-29 at 10:13

            For a little lesson in steganography, I am appending an image to another image file like so:



            Answered 2021-Apr-29 at 09:52

            Ok got it, this is how to show the hidden image:



            Will the rand() function ALWAYS produce the same result with the same seed?
            Asked 2021-Feb-02 at 19:12

            I am trying to implement a set of encode and decode steganography functions in C, where i use rand() to randomly scatter my data along an array.

            I use rand to calculate a random index like so:



            Answered 2021-Feb-02 at 18:04

            No. For reproducibility using rand (which is not exactly specified and inherently uses global state) is terrible for multiple reasons:

            1. you might use a different compiler/system, which may use a different RNG,

            2. you might use the same compiler, but updated to a new version, which uses a different RNG,

            3. you might use the same compiler, same version, but with an updated libc, that uses a different RNG,

            4. you use the same compiler and library version, but have any other non-deterministic call order of the RNG, including but not limited to:

              a) some other source of randomness,

              b) user input,

              c) reordering of concurrency from run-to-run, or

              d) any of the above in any of the libraries that you use.



            Python: Problems of steganography in process of saving(cv2.imwrite) and reading(cv2.imread) using openCV
            Asked 2021-Jan-08 at 05:37

            I have a steganography code that hiding image inside another image.

            I inject a watermark into the my image through this code.

            The principle is very simple.

            I used the source_image and watermark_images for insert the watermark.

            This will randomly distribute the watermark_images.

            First, scatter x and y of the watermark image using random seeds.

            And then, convert source_image to frequency area using Fast Fourier Transform.

            Finally, combine the watermark_layer with the frequency area of the source_image.

            This encoding process works perfectly well. However, there is a problem in the process of decoding.

            Decoding code is collects pixels scattered by random seeds in one place on the same principle.

            This is Result of decoing:

            this problem, if i try to encoded image to save(cv2.imwrite) and recalled(cv2.imread), the decoding doesn't work.

            If I use the encoded object as it is, there is no problem. Is the pixel damaged during the saving and recall process?

            this is my full code:



            Answered 2021-Jan-08 at 04:43

            Carlos Melus have a good point.

            Your code is not suitable for processing jpg images.

            if you use png format, it will work out well.



            Magick++ Image.GetPixels return nullptr after many succesful iterations
            Asked 2020-Nov-28 at 12:09

            I'm trying to make steganography with C++ using Magick++. Here is my code for now



            Answered 2020-Nov-28 at 12:09

            You're probably encountering undefined behaviour as you're not using getPixels correctly. Please see the documentation



            Image Steganography with python opencv, reconstructing the embedded image is very noisy
            Asked 2020-Nov-24 at 15:39

            I am hiding an image inside another image (Image Steganography) by using python 3.6.8 with opencv I am on windows 10 machine.

            The algorithm I am using is as follows: I have defined a mask with zeros at the last two lowest significant bits. Then I use this mask and "bitwise and" it to make the last two bits of every pixel in the base image to zero. There are two images, one is base image which accommodates the second image (hidden image). I have made sure the size of the hidden image is at most 1/4 of the base image. I have also changed both images in gray-scale to deal with only one channel.

            I have successfully embedded the image as well as extracting it, but the extracted image is very noisy, which is surprising for me as the content of the image has not changed.



            Answered 2020-Nov-24 at 15:21

            The contents of const_byte_list are equivalent to those in all_pixels_hidden_img, which are the secret image pixels in binary string form. Your error comes shortly after, with



            Calculate total number of pixel in an image
            Asked 2020-Nov-11 at 14:15

            How do I calculate the total number of pixel of an image before uploading it to the server? I'm using steganography with PHP and sometimes the number of pixel of a selected image isn't enough to contain the message to hide. I'm looking for a way in javascript or PHP to know the number of pixels in an image to avoid problems when image is processed.



            Answered 2020-Nov-11 at 13:40

            How about something like this:


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install steganography

            You can download it from GitHub.
            You can use steganography like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the steganography component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer For Gradle installation, please refer .


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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