# Vigenere Cipher Environment

This environment contains a tool that encrypts/decrypts text using the Vigenere cipher. The tool is implemented in `vigenere_cipher.py`.

## Usage

To encrypt text, run:

```bash
python vigenere_cipher.py "text" "key"
```

To decrypt text, run:

```bash
python vigenere_cipher.py "encrypted" "key" --decrypt
```

## Example

```bash
python vigenere_cipher.py "Hello, World!" "abcd"
# Hfnoo, Zosng!
```

```bash
python vigenere_cipher.py "Hfnoo, Zosng!" "abcd" --decrypt
# Hello, World!
```
