DMI UUID and AMT Intel Serial ID

Lance Atencio (Intel)
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July 7, 2009 5:07 PM PDT
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#3 Reply to #2
Quoting - Arles Rodriguez


There are the three first parts of serial appears in inverse order.

Example: intel amt web: bc19a334-5218-16ec-other_parts_of_serial_number
              dmi output:     34a319bc-1852-ec16-other_parts_of_serial_number

In effect they're appears like byte swapping, little endian bigendian maybe?

I read that some manufacturers take the three first part of this uuid and change byte order (littleendian), but this is reported on DMI 2.6, but my DMI version is 2.4.

By now, I will use the "Max Power" (The Simpsons method) and make some dark operations! 

Thanks by yours response.
 


Yep, that looks like the bug.

Here is some code that Randy has written to deal with this:
// data is a array if 16 bytes (AMT returned GUID)
byte[] data;

//re-arrage the first 7 bytes returned from AMT
byte t = data[3];
data[3] = data[0];
data[0] = t;
t = data[2];
data[2] = data[1];
data[1] = t;
t = data[5];
data[5] = data[4];
data[4] = t;
t = data[7];
data[7] = data[6];
data[6] = t;

// now you have a correctly formatted GUID
Guid guid = new Guid(data);

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