Crypto Caesar

This is a simple Python implementation of the Caesar cipher encryption algorithm. It shifts each letter of the plaintext by 3 positions in the alphabet, wrapping around at the end.

Features

• Implements the Caesar cipher with a fixed shift of 3
• Encodes plaintext into ciphertext using Python’s str.maketrans and translate
• Works with lowercase letters (a–z)

How to Run

1. Clone or download the repository.
2. Run the script with a plaintext argument:

python caesar.py "hello"

3. The output will be the encoded text:

khoor

Notes

• Only lowercase letters are handled; uppercase and non-alphabetic characters remain unchanged.
• You can modify the code to support different shift values or add decryption functionality.
• This is a classic example of substitution ciphers and a great intro to cryptography basics.