Text Encryption (Caesar Cipher)

This project is a simple implementation of the Caesar Cipher in Python. The Caesar Cipher is a basic encryption technique where each letter in the plaintext is shifted by a fixed number of positions in the alphabet.

Features

• Encrypt and decrypt text using the Caesar Cipher method.
• Handles both uppercase and lowercase letters.
• Keeps non-alphabetic characters (spaces, punctuation, numbers) unchanged.

Usage

1. Run the script:

2. Enter the plaintext you want to encrypt/decrypt when prompted.

3. Enter the key (an integer, 1-25) for the letter shift.

4. The program will display:

• The original text
• The encrypted (cipher) text
• The decrypted (original) text

Example

Enter the text: Hello World! Enter the key: 3 Original Text: Hello World! Encrypted Text: Khoor Zruog! Decrypted Text: Hello World!

How it Works

• The program defines a function caesar_cipher(text, key_value, mode) that shifts each alphabetic character by the key value.
• For decryption, the shift is reversed.
• Non-alphabet characters are not changed.
• Uses ASCII values to shift and wrap around the alphabet.

File Structure

• text_encryption.py: Main Python script containing the Caesar Cipher implementation and usage instructions.

License

This project is licensed under the MIT License.

Author

Sankalp Ghasti