1// +build windows
2
3package machineid
4
5import (
6	"golang.org/x/sys/windows/registry"
7)
8
9// machineID returns the key MachineGuid in registry `HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography`.
10// If there is an error running the commad an empty string is returned.
11func machineID() (string, error) {
12	k, err := registry.OpenKey(registry.LOCAL_MACHINE, `SOFTWARE\Microsoft\Cryptography`, registry.QUERY_VALUE|registry.WOW64_64KEY)
13	if err != nil {
14		return "", err
15	}
16	defer k.Close()
17
18	s, _, err := k.GetStringValue("MachineGuid")
19	if err != nil {
20		return "", err
21	}
22	return s, nil
23}
24