Steganography | Simple PHP implementation of Steganography | Messaging library

 by   kzykhys PHP Version: Current License: MIT

kandi X-RAY | Steganography Summary

kandi X-RAY | Steganography Summary

Steganography is a PHP library typically used in Messaging applications. Steganography has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

[SensioLabsInsight] Simple PHP implementation of Steganography (Hiding a hidden message within an image).
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            kandi-support Support

              Steganography has a low active ecosystem.
              It has 81 star(s) with 26 fork(s). There are 6 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 2 open issues and 0 have been closed. There are 1 open pull requests and 0 closed requests.
              It has a neutral 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 MIT 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.
              Installation instructions, examples and code snippets are available.
              Steganography saves you 251 person hours of effort in developing the same functionality from scratch.
              It has 611 lines of code, 82 functions and 17 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.
            • Initialize the image
            • Select the compressed compression .
            • Get a binary string representation of the current image .
            • Encodes a message .
            • Moves the pointer to the next position .
            • Get the current character .
            • Sets the compressor
            • Attach a Compressor to this group .
            • Get the unique key
            • Returns true if the current position is valid .
            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

            Encode the given data .
            pythondot img1Lines of Code : 59dot img1License : Permissive (MIT License)
            copy iconCopy
            def base64_encode(data: bytes) -> bytes:
                """Encodes data according to RFC4648.
            
                The data is first transformed to binary and appended with binary digits so that its
                length becomes a multiple of 6, then each 6 binary digits will match a   

            Community Discussions

            QUESTION

            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.

            ...

            ANSWER

            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:

            https://aws.amazon.com/marketplace/pp/B089QBV2GC

            In addition, there are other security best practices too:

            Security Best Practices for Amazon S3

            Source https://stackoverflow.com/questions/67788979

            QUESTION

            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:

            ...

            ANSWER

            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

            Source https://stackoverflow.com/questions/67326366

            QUESTION

            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:

            ...

            ANSWER

            Answered 2021-Apr-29 at 09:52

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

            Source https://stackoverflow.com/questions/67314315

            QUESTION

            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:

            ...

            ANSWER

            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.

            Source https://stackoverflow.com/questions/66015067

            QUESTION

            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:

            ...

            ANSWER

            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.

            Source https://stackoverflow.com/questions/65623207

            QUESTION

            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

            ...

            ANSWER

            Answered 2020-Nov-28 at 12:09

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

            Source https://stackoverflow.com/questions/65049168

            QUESTION

            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 4.4.0.44. 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.

            ...

            ANSWER

            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

            Source https://stackoverflow.com/questions/64978571

            QUESTION

            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.

            ...

            ANSWER

            Answered 2020-Nov-11 at 13:40

            How about something like this:

            Source https://stackoverflow.com/questions/64787481

            QUESTION

            Steganography function works fine with text but garbles binary output
            Asked 2020-Aug-03 at 22:02

            I'm trying to embed a file in an image by using the last 2 LSB's of each color in each pixel (last 3 in the case of blue), and whenever I encode/decode, text works fine, but any binary data like ELF files, random data, etc get all mixed up. Here's my steganography and desteganography function:

            ...

            ANSWER

            Answered 2020-Aug-03 at 22:02

            It turned out that I was only reading 7 bits from each char, instead of 8. Once I put replaced 0x60 with 0xe0 and 0x3 with 0x7 in the red component, it worked.

            Source https://stackoverflow.com/questions/63236587

            QUESTION

            What does this bitwise operation perform?
            Asked 2020-Jul-31 at 06:34

            I've been doing some projects on the side recently, and I've been wanting to go into steganography. I looked up a few ways to do it, but one of them I don't really understand.

            ...

            ANSWER

            Answered 2020-Jul-31 at 06:23

            If we take a look at the binary representation of those magic numbers:

            Source https://stackoverflow.com/questions/63186642

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

            Vulnerabilities

            No vulnerabilities reported

            Install Steganography

            Update your composer.json and run composer update.

            Support

            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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            https://github.com/kzykhys/Steganography.git

          • CLI

            gh repo clone kzykhys/Steganography

          • sshUrl

            git@github.com:kzykhys/Steganography.git

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