Simple dictionary in C

Table of Contents

• About the Project
• Getting started
  • Requirements
  • Usage
• Statistics Module (optional)
• TODO
• Learn More
• License

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About the project

This is an implementation and usage example of a dictionary in C.
It supports:

• Hashing
• Collisions (keys must be different)
• String-like keys
• Some utility functions as shown in src/main.c

This works both on Windows, Linux and MacOS

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Getting started

Requirements

• Git for cloning the repo. Choose the correct installation for your OS.
• Windows
  • Visual Studio: Install Visual Studio with Desktop development with C++ selected
  • GCC for windows (if don't have one already)
    • Download and unzip the correct file for your platform (probably msvcrt-x86_64)
    • Add the bin directory in the unzipped folder to the PATH environment variable. Here is a tutorial on how to add items to PATH
  • Python 3.10.5: Any Python version above 3.8 works but make sure you check the box add to path on the last screen of the installation
• Linux (update the installation for your distro if different):
  • Build essentials (should be installed by default) and python3 dependencies

    apt update; apt install build-essential python3 python3-venv -y

Usage

Every time you see a code block, you should run it in a:

• Terminal: if you are on Linux / MacOS
• Developer: PowerShell for VS: if you're on Windows (this is installed with Visual Studio, search for it)

1. Clone the repo and go into it:

   git clone https://github.com/darkarp/c-dictionary
   cd c-dictionary
   

2. Create python virtual environment and activate it

   • Windows:

     py -m venv venv
     .\venv\Scripts\activate

   • Linux / MacOS:

     python3 -m venv venv
     source venv/bin/activate

3. Generate Makefile

   python makefile_gen.py

4. Running the makefile

   • Windows
     • If cleanup is required: nmake clean
     • Then run this: nmake all
   • Linux / MacOS
     • If cleanup is required: make clean
     • Then run this: make all
     • For a comprehensive help screen: make help

5. Running the example main.exe

   • Windows: .\bin\main.exe
   • Linux / MacOS: ./bin/main

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Statistics Module (optional)

This project comes with a python statistics script, located in: statistics/collisions.py. This is an educational script which computes the ratio of collisions for this dictionary for a particular predefined size of the dict.

It makes use of a C library for python. If you wish to run the statistics/collisions.py, the procedure is as follows:

1. Install the C module:

python statistics/setup.py install

2. Run statistics/collisions.py

python statistics/collisions.py

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TODO

• Better documentation
• Utility functions
• Better stability check
• Multiple hash support
• File & membuffer I/O for saving/loading (pickle)
• Testing

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Learn More

For access to a community full of aspiring computer security experts, ranging from the complete beginner to the seasoned veteran, join our:

• Discord Server: WhiteHat Hacking discord
• Website: Whitehat Hacking Website

If you wish to contact me, you can do so via: mario@whitehathacking.tech

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License

AGPL-3.0