README.md

Cryptography Algorithms Implementation 🔐

🔑 Cryptography Algorithms Implementation 🚀

Internship Project for Codec Technologies
Learn, implement, and test core cryptography algorithms in Python! ⚡
Covers AES, RSA, and Hashing (MD5, SHA-256, SHA-512) with examples & tests.
_{Tech Stack: Python, PyCryptodome, Pytest}

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🧠 Introduction

Developed as part of my internship with Codec Technologies, this project provides hands-on implementations of cryptography algorithms.
It demonstrates encryption, decryption, and hashing with a simple Python structure. Includes ready-to-use examples, unit tests, and clean documentation.

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📦 Features

• 🔒 AES (Symmetric Encryption) – Encrypt & decrypt using a secret key
• 🔑 RSA (Asymmetric Encryption) – Public/private key pair encryption & digital signature
• 🧾 Hashing – Generate secure hashes (MD5, SHA-256, SHA-512)
• 🧪 Unit Tests – Verify correctness of algorithms
• 📂 Examples Included – Easy-to-run demo scripts
• 📝 Well-Structured Project – Clean and modular codebase

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🛠️ Technologies Used

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🚀 How to Run the Project?

✅ Prerequisites:

• Python 3.8+
• Virtual environment (recommended)

🛠️ Setup:

# Clone and setup
git clone https://github.com/CodeWithTanim/Cryptography-Algorithms-Implementation.git
cd Cryptography-Algorithms-Implementation

# Install dependencies
pip install -r requirements.txt

# Run example scripts
python -m examples.demo_aes
python -m examples.demo_rsa
python -m examples.demo_hashing

🗂️ Project Structure

Cryptography-Algorithms-Implementation/
│
├── src/
│   ├── symmetric/
│   │   └── aes_encryption.py       ← AES implementation
│   ├── asymmetric/
│   │   └── rsa_encryption.py       ← RSA implementation
│   └── hashing/
│       └── hashing_algorithms.py   ← Hashing functions
│
├── examples/
│   ├── demo_aes.py                 ← AES demo script
│   ├── demo_rsa.py                 ← RSA demo script
│   └── demo_hashing.py             ← Hashing demo script
│
├── tests/                          ← Unit tests
├── requirements.txt                ← Dependencies
└── README.md

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🌟 Key Learnings (Internship)

• Understood symmetric vs asymmetric cryptography

• Implemented AES and RSA in Python

• Worked with hashing algorithms for secure storage

• Learned modular coding with src/ and tests/ structure

• Improved debugging and testing skills with Pytest

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✍️ Developer

MD SAMIUR RAHMAN TANIM Intern at Codec Technologies
🔗 GitHub | LinkedIn

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📜 Acknowledgments

• Thanks to Codec Technologies for the internship opportunity

• PyCryptodome developers for cryptography library

• Python & open-source community for amazing resources

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🤝 Contribute

Pull requests are welcome! If you find bugs, improvements, or want to add more algorithms (like DES, Blowfish, ECC), feel free to fork and submit a PR.

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📡 Connect With Me: