python encryption / decryption in string form with AES

crypto.py

from base64 import b64encode, b64decode

from Crypto.Cipher import AES
from Crypto.Util.Padding import pad, unpad


class CryptoWrapper:
    def __init__(self, key):
        self.key = (key * 2).encode()

    def encrypt(self, message):
        message = message.encode()
        cipher = AES.new(self.key, AES.MODE_CBC)
        return b64encode(cipher.iv + cipher.encrypt(pad(message, AES.block_size))).decode()

    def decrypt(self, message):
        message = b64decode(message.encode())
        iv = message[:16]
        message = message[16:]
        cipher = AES.new(self.key, AES.MODE_CBC, iv)
        return (unpad(cipher.decrypt(message), AES.block_size)).decode()




crpt = CryptoWrapper("password")
test = "test string"
print("encrypting: " + test)
print("encrypted: " + crpt.encrypt(test))
print("decrypted: " + crpt.decrypt(crpt.encrypt(test)))

This uses pycryptodome (pip install pycryptodome)