yansongda / pay

            throw new InvalidConfigException('Missing Alipay Config -- [private_key]');

        }

        if (Str::endsWith($privateKey, '.pem')) {

            $privateKey = openssl_pkey_get_private($privateKey);

        } else {

            $privateKey = "-----BEGIN RSA PRIVATE KEY-----\n".

                wordwrap($privateKey, 64, "\n", true).

                "\n-----END RSA PRIVATE KEY-----";

        }

        openssl_sign(self::getSignContent($params), $sign, $privateKey, OPENSSL_ALGO_SHA256);

            throw new InvalidConfigException('Missing Alipay Config -- [ali_public_key]');

        }

        if (Str::endsWith($publicKey, '.pem')) {

            $publicKey = openssl_pkey_get_public($publicKey);

        } else {

            $publicKey = "-----BEGIN PUBLIC KEY-----\n".

                wordwrap($publicKey, 64, "\n", true).

                "\n-----END PUBLIC KEY-----";

        }

        $sign = $sign ?? $data['sign'];