Re: [Algorithms] GUIDs

[Kent Q. <ken...@co...>]

I don't have the details, but as I recall, the general idea was to
combine the network MAC address of the machine generating the GUID
(which is a 48-bit unique number) with a version of the date and time
down to the millisecond. No two machines with a network card should ever
be able to generate the same GUIDs that way (as long as you don't
generate more than one per millisecond, anyway!).

For machines that don't have a network card, there was some other way of
getting the 48-bit ID, but I forget what it is.

> Matthew Davies wrote:
> 
> Hi,
> 
> Does anyone know the algorithm or have source code describing the way
> CoGuidCreate or UuidCreate generates the GUIDs?  Or perhaps there's a
> cross platform solution to generating globally unique identifiers?
> 

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Kent Quirk                   | CogniToy: Intelligent toys...
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