Git Product home page Git Product logo

steganography-png-decoder's Introduction

Stand With Ukraine

steganography-png-decoder's People

Contributors

marioallves avatar s373r avatar vuoriliikaluoma avatar

Stargazers

avatar avatar avatar avatar avatar avatar avatar avatar avatar avatar avatar avatar avatar avatar avatar avatar

Watchers

avatar avatar avatar

Forkers

m1doriya marioallves klezvirus 5l1v3r1 arvindvjkumar killaforlifelol sushantsharma13981 cchudant

steganography-png-decoder's Issues

Add decoding for "zTXt" chunks

Stored information takes advantage of compression. Decompression is needed before print.

4.2.3.2. zTXt Compressed textual data
+--------------------+-------------------------------+
| Keyword:           | 1-79 bytes (character string) |
| Null separator     | 1 byte                        |
| Compression method | 1 byte                        |
| Compressed text    | n bytes                       |
+--------------------+-------------------------------+
(c) http://www.libpng.org/pub/png/spec/1.2/PNG-Chunks.html

Add beautiful print for "iTXt" chunk subfields

At the moment the script just replaces "Null separator" (\x00) to space (' ').

But the chunk has more interesting information:

+--------------------+------------------------------------+
| Keyword            | 1-79 bytes (character string)      |
| Null separator     | 1 byte                             |
| Compression flag   | 1 byte                             |
| Compression method | 1 byte                             |
| Language tag       | 0 or more bytes (character string) |
| Null separator     | 1 byte                             |
| Translated keyword | 0 or more bytes                    |
| Null separator     | 1 byte                             |
| Text               | 0 or more bytes                    |
+--------------------+------------------------------------+

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. 📊📈🎉

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google ❤️ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.