//go:build windows

package originclient

import "golang.org/x/sys/windows/registry"

// machineID reads MachineGuid from the registry, which is generated at
// Windows install time and stable across reboots.
func machineID() (string, error) {
	key, err := registry.OpenKey(registry.LOCAL_MACHINE, `SOFTWARE\Microsoft\Cryptography`, registry.QUERY_VALUE|registry.WOW64_64KEY)
	if err != nil {
		return "", err
	}
	defer key.Close()

	value, _, err := key.GetStringValue("MachineGuid")
	if err != nil {
		return "", err
	}
	return value, nil
}