That looks like a really bad idea. GUIDs and UUIDs are supposed to be globally or universally unique. You should not try to "generate" matching identifiers, ever. Ask for an identifier once and immediately associate it globally, permanently, indelibly, invariably, undeniably, universally, with the entity in question. If another party/player/machine/database needs to know the identifier of that entity, it should ask the entity or registrar of entities, it should not just "generate" something that "should" match it.

A GUID or UUID is typically generated a priori without any knowledge of the entity to which it will be associated. That's so you can have a huge supply of identical entities and they all get unique individual identifiers. Tokens could somehow match, and then these hash-up identifiers would match. If you already have a "token" (your word) which is unique for the object, then you don't need a GUID/UUID hashing of it: use that token as your identifier.

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[ e d @ h a l l e y . c c ]

In reply to Re^2: Function to create a GUID by halley
in thread Function to create a GUID by Anonymous Monk

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