def METHOD_NAME(message):
    """
    AES-encrypt and base64-encode `message`.
    Uses Django SECRET_KEY as AES key.
    >>> settings.SECRET_KEY = 'xyzzy'
    >>> b64_aes_encrypt('Around you is a forest.')
    'Vh2Tmlnr5+out2PQDefkudZ2frfze5onsAlUGTLv3Oc='
    """
    if isinstance(settings.SECRET_KEY, bytes):
        secret_key_bytes = settings.SECRET_KEY
    else:
        secret_key_bytes = settings.SECRET_KEY.encode('ascii')
    aes_key = simple_pad(secret_key_bytes, AES_BLOCK_SIZE)[:AES_KEY_MAX_LEN]
    # We never need to unpad the key, so simple_pad() is fine (and
    # allows us to decrypt old values).
    aes = AES.new(aes_key, AES.MODE_ECB)
    message_bytes = message if isinstance(message, bytes) else message.encode('utf8')
    plaintext_bytes = crypto_pad(message_bytes, AES_BLOCK_SIZE, style='iso7816')
    ciphertext_bytes = aes.encrypt(plaintext_bytes)
    b64ciphertext_bytes = b64encode(ciphertext_bytes)
    return b64ciphertext_bytes.decode('ascii')