Caesar Encipher Decipher Tool

A simple, intuitive web-based Caesar cipher encryption and decryption tool. This tool lets you encrypt and decrypt text using the classic Caesar cipher technique, directly in your browser.

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Features

• Encryption and Decryption: Supports both encryption and decryption modes.
• Shift Customization: Allows you to specify a shift value for the cipher.
• Preserves Formatting: Keeps uppercase and lowercase letters distinct, while leaving non-alphabetic characters unchanged.
• Responsive Design: Works on desktop, tablet, and mobile devices.

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How It Works

1. Encryption:

   • Shifts each letter forward by the given shift value.
   • Example: Hello with a shift of 3 becomes Khoor.

2. Decryption:

   • Reverses the shift by using the negative of the given shift value.
   • Example: Khoor with a shift of 3 becomes Hello.

3. Alphabet Handling:

   • Uppercase and lowercase letters are preserved.
   • Non-alphabetic characters (e.g., spaces, punctuation) remain unchanged.

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Usage

1. Enter Text: Type the text you want to encrypt or decrypt in the text area.
2. Specify Shift Value: Input an integer value for the shift.
3. Select Mode: Choose between "Encrypt" or "Decrypt" by clicking the respective button.
4. View Output: The resulting text will appear below.

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Example

Encryption:

• Input: Hello, World!
• Shift: 3
• Output: Khoor, Zruog!

Decryption:

• Input: Khoor, Zruog!
• Shift: 3
• Output: Hello, World!

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Setup Instructions

This tool is hosted on GitHub Pages here. You can also run it locally:

1. Clone the Repository:

git clone https://github.com/mua2022/CaesarEncipherDecipherTool.git

cd CaesarEncipherDecipherTool

2. Open Locally

• Open index.html in any modern web browser.

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GitHub Pages Hosting

• Enable GitHub Pages in your repository settings to host the tool online.

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Technologies Used

• HTML: For the structure of the tool.
• CSS: For styling and layout.
• JavaScript: For Caesar cipher logic and interactivity.

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Contributing

Contributions are welcome! Feel free to fork the repository and submit pull requests.

License

This project is licensed under the MIT License.

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Contact

For any issues or suggestions, please open an issue in the GitHub repository.