Fwupd.build_machine_id
Description: Reference for Fwupd.build_machine_id

### Function

# Fwupdbuild_machine_id

#### Declaration [src]

    gchar*
    fwupd_build_machine_id (
      const gchar* salt,
      GError** error
    )

#### Description [src]

Gets a salted hash of the /etc/machine-id contents. This can be used to identify a specific machine. It is not possible to recover the original machine-id from the machine-hash.

Available since: | 1.0.4

#### Parameters

`salt` | `const gchar*`
| Optional salt.
| The argument can be `NULL`.
| The data is owned by the caller of the function.
| The value is a NUL terminated UTF-8 string.
`error` | `GError **`
| The return location for a `GError*`, or `NULL`.

#### Return value

Returns: | `gchar*`
| The SHA256 machine hash, or `NULL` if the ID is not present.
| The caller of the function takes ownership of the data, and is responsible for freeing it.
| The value is a NUL terminated UTF-8 string.