Simple AES ECB Encryption/Decryption

aes.py

from Crypto.Cipher import AES
from Crypto.Util.Padding import pad, unpad
from base64 import b64encode, b64decode

def encrypt_text(plaintext, key):
    key = bytes(key, 'ascii') + b'\x00' * (16-len(key))
    cipher = AES.new(key, AES.MODE_ECB)
    ciphertext = cipher.encrypt(pad(plaintext.encode(), AES.block_size))
    return ciphertext

def decrypt_text(ciphertext, key):
    key = bytes(key, 'ascii') + b'\x00' * (16-len(key))
    cipher = AES.new(key, AES.MODE_ECB)
    decrypted_data = unpad(cipher.decrypt(ciphertext), AES.block_size)
    return decrypted_data.decode()

if __name__ == "__main__":
    plaintext = "Hello, this is a secret message!"
    key = "Hardcoded"

    ciphertext = encrypt_text(plaintext, key)
    print("Ciphertext (Base64):", b64encode(ciphertext).decode())

    decrypted_text = decrypt_text(ciphertext, key)
    print("Decrypted Text:", decrypted_text)