def get_encryption_aes_key(key, kms_client):
    encryption_context = {"kms_cmk_id": key}
    response = kms_client.generate_data_key(
        KeyId=key, EncryptionContext=encryption_context, KeySpec="AES_256"
    )
    return (
        response["Plaintext"],
        encryption_context,
        base64.b64encode(response["CiphertextBlob"]).decode(),
    )