Kr

A simple file encryption/decryption program using Monocypher.

Cybersecurity & Ethical HackingCUnlicense

Abstract

Kr is an open-source Cybersecurity & Ethical Hacking project. A simple file encryption/decryption program using Monocypher. When using keyfiles, kr can help you generate either random or deterministic keyfiles (based on a passphrase and a uid). See Keyfiles Management below. It is built using C. The complete source code is publicly available on GitHub under the The Unlicense, making it a useful reference for students building a Cybersecurity & Ethical Hacking mini project or final-year project.

1. Introduction

When using keyfiles, kr can help you generate either random or deterministic keyfiles (based on a passphrase and a uid). See Keyfiles Management below.

2. Objective

A simple file encryption/decryption program using Monocypher.

This project demonstrates how C can be applied to a real-world Cybersecurity & Ethical Hacking problem.

4. Technology Stack

C

5. System Requirements

General requirements for this technology stack — check the README for exact versions.

  • Arduino IDE / PlatformIO or a C compiler (gcc)
  • Target board where applicable
  • Git (to clone the repository)

6. Installation & Setup

git clone https://github.com/ewd340/kr.git
cd kr
$ make install

Full setup instructions are in the project README.

7. Future Enhancements

Suggested extensions you can add to make this your own project.

  • Add logging and alert notifications (email / Telegram)
  • Write a threat model document for the tool
  • Package it with Docker for safe lab testing

8. Viva / Review Questions

Common questions examiners ask for projects in this domain.

  1. Which threat or attack does this project defend against?
  2. What detection or protection technique is used and what are its limits?
  3. How are false positives and false negatives handled?
  4. Which cryptographic algorithms or security standards are involved?
  5. What legal and ethical rules apply when testing a tool like this?

9. Source Code & License

This project is developed by ewd340 and published on GitHub under the The Unlicense. Please follow the license terms and credit the original author when you use or modify this code.

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