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Why do Unix passwords use the system time and PID for the salt value?

I don't understand why the PID and time is used. I guess the time is to help randomize the salt, and I suppose the PID does as well? Isn't there a chance a lot of o开发者_开发百科ther uses could have the same PID?


You can't have two processes with the same Process ID at the same time.

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