🔐 Cryptographic Algorithms

A collection of classical and modern cryptographic algorithms implemented in C# for educational and practical purposes. This project covers symmetric and asymmetric encryption and classical ciphers.

🧩 Project Structure

Each algorithm is organized into its own folder or file for modularity and ease of testing:

✅ Modern Algorithms

• AES – Advanced Encryption Standard (symmetric)

• DES – Data Encryption Standard (symmetric)

• RC4 – Stream cipher

• RSA – Rivest–Shamir–Adleman (asymmetric)

• DiffieHellman – Key exchange protocol

• ElGamal – Asymmetric encryption

🏛️ Classical Ciphers

Found in the MainAlgorithms/ folder:

• Ceaser.cs – Caesar Cipher

• Columnar.cs – Columnar Transposition

• HillCipher.cs – Hill Cipher

• Monoalphabetic.cs – Monoalphabetic Substitution

• PlayFair.cs – Playfair Cipher

• RailFence.cs – Rail Fence Cipher

• AutokeyVigenere.cs – Autokey Vigenère Cipher

• RepeatingKeyVigenere.cs – Repeating Key Vigenère Cipher

• 🛠️ How to Run

1. Clone the repository:

   bash git clone https://github.com/OmarHassan-99/Cryptographic-Algorithms.git

2. Open the project in Visual Studio or any C#-compatible IDE.

3. Build and then you can test individual algorithms via test explorer.