🛡️ Information Security Lab

This repository holds lab exercises for Information Security, mostly written in Python.

📝 About

This project is a collection of lab exercises to implement security concepts like cryptography, network tools and other basics.

• Ex1 - Classical Ciphers
  Implements classical algorithms like Caesar, Vigenère, Playfair, and Hill cipher.

• Ex2 - RSA (Asymmetric Crypto)
  Educational implementation of RSA for key generation, encryption, and decryption.

• Ex3 - Hashing & Symmetric Crypto
  Demonstrates SHA-256 hashing and symmetric encryption using AES and DES.

• Ex4 - Elliptic Curve Cryptography (ECC)
  ECC encryption and ECIES-like examples using ecies and tinyec.

• Ex5 - Primality Testing
  Trial division and Miller–Rabin algorithms for primality checks.

• Ex6 - Diffie–Hellman Key Exchange
  Simulates DH key exchange to compute public keys and shared secrets.

• Ex7 - Digital Signatures
  RSA-based signing and verification using the cryptography library.

• Ex8 – Configure S/MIME
  Configure S/MIME for E-Mail Communication.

• Ex9 – Password Guessing and Cracking
  Attempts passwords systematically or recovers them from hashes/encrypted data.

• Ex10 – Authentication, Authorization & Access Control
  Implements authentication, authorization, and role‑based access control mechanisms in applications.

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🚀 Get Started

Requirements

• Python 3.x

Setup & Run

1. Clone the project:

   git clone https://github.com/GodOfZap/IS.git

2. Move into the folder:

   cd IS

3. Install dependencies:

   pip install -r requirements.txt

4. Run a script:

   Go to the specific lab folder and run the file using the appropriate Python command (it may be python or python3):

   python script_name.py
   # OR
   python3 script_name.py

   (If a script needs extra packages, look for a requirements.txt file in that folder and install them first: pip install -r requirements.txt.)

🤝 Contribute

New contributions are welcomed. Fix a bug, add a new lab or improve the docs. Just fork the repo and submit a Pull Request.

Please see the CONTRIBUTING.md file for guidelines on setting up your development environment, submitting pull requests.

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✨ Contributors

📄 License

This project is under the GPL 3.0 License. See the LICENSE file for details.

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