https://github.com/clats97/caesarcipher

A simple Caesar cipher script that can encrypt plaintext by selecting a shift. The reverse is done to decrypt. Very simple to use.
https://github.com/clats97/caesarcipher

caesar-cipher caesar-cipher-algorithm cipher cipher-algorithms encryption encryption-algorithms encryption-decryption trending trending-repositories

Last synced: 3 days ago
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A simple Caesar cipher script that can encrypt plaintext by selecting a shift. The reverse is done to decrypt. Very simple to use.

• Host: GitHub
• URL: https://github.com/clats97/caesarcipher
• Owner: Clats97
• License: apache-2.0
• Created: 2025-04-06T00:32:54.000Z (3 months ago)
• Default Branch: main
• Last Pushed: 2025-04-11T08:13:11.000Z (3 months ago)
• Last Synced: 2025-06-02T21:46:40.574Z (25 days ago)
• Topics: caesar-cipher, caesar-cipher-algorithm, cipher, cipher-algorithms, encryption, encryption-algorithms, encryption-decryption, trending, trending-repositories
• Language: Python
• Homepage:
• Size: 15.6 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# CaesarCipher

A simple Caesar cipher script that can encrypt plaintext by selecting a shift. The reverse is done to decrypt. Very simple to use.

# Caesar Cipher Script

## Features

- **Colorful ASCII Art Banner:**  

  Displays a red ASCII art logo, the title "C A E S A R   C I P H E R" in blue, version information in red, and credits in black.

  

- **Encryption & Decryption Options:**  

  - **Encrypt:** Shift the letters of your input text by a specified value.

  - **Decrypt:** Reverse the encryption by applying the inverse shift.

  

- **Uppercase Output:**  

  All output (encrypted or decrypted) is converted to uppercase.

- **User-Friendly Navigation:**  

  After each operation, the user can press Enter to return to the home screen. Pressing Enter at the home screen exits the script.

## Requirements

- **Python 3.x**  

  Ensure Python 3 is installed on your system. You can verify your Python version by running:

 

  python3 --version

  

- **ANSI-Compatible Terminal:**  

  The script uses ANSI escape codes to display colored text. Make sure your terminal supports these codes.  

## Installation

1. **Clone or Download the Repository:**  

   Save the script file in a directory of your choice.

2. **Verify Python Installation:**  

   Confirm that Python 3 is installed on your system.

## Usage

1. Git clone or download the repository. 

2. Run the script.

3. Follow the on screen prompts to use it.

  

4. **Follow the On-Screen Prompts:**

   - **Option 1 (Encrypt):** Enter a shift value and the text you want to encrypt.

   - **Option 2 (Decrypt):** Enter a shift value and the text you want to decrypt.

   - **Exit:** Press Enter on the home screen to exit the script.

## Code Structure

- **print_banner():**  

  Displays the ASCII art banner along with colored title, version, and credit information.

- **caesar_encrypt(text, shift):**  

  Encrypts the provided text by shifting each alphabetical character by the specified amount, and returns the result in uppercase.

- **caesar_decrypt(text, shift):**  

  Decrypts the text by applying the negative of the provided shift value. This function uses the `caesar_encrypt` function internally.

- **main():**  

  Contains the main loop that manages user interactions and the menu options.

## License

Distributed under the Apache 2.0 License. 

## Feedback & Contributions

If you have suggestions, feedback, or improvements, please open an issue or submit a pull request.

**Author**

Joshua M Clatney (Clats97)

Ethical Pentesting Enthusiast

Copyright 2025 Joshua M Clatney (Clats97)

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