I need a unique image identifier. Does anyone have any
The identifier must be unique so that if someone copies an
image to another machine I get a new id. It must also be unique by
instance, so that if two images or the same image is launched multiple times I
should get unique identifiers. The id should be local and non
transferable plus it should never persist, since I would like to use this id to
prevent movement between images of objects like in spoon, magma, glorp,
squeakELib, croquet, or any other distributed objects scheme.
The id will be used first in my SSL implementation.
My first thought was to use Network Card NIC address + image
PID. Are these values available through squeak? Are they available across
every platform? (if they are an you know how to retrieve them please let
me know) What I don’t like about these numbers is that they are
public numbers. What would really be cool is if the VM assigned a UUID
every time it started stored in a non accessible object so that we could only
get a string back instead of a full object that someone might be tempted to
move from image to image.
Thank you everyone for your help and ideas. All
suggestions are very much welcomed! Feel free to contact me off list too.