Unless you enumerate all of the permutations of the set, I don't know how this could possibly work.
That's exactly what I'm doing; there is no need to limit yourself to individually selected numbers. If you treat each shuffled set as a random selection from the set of all possible shuffles, then you have a perfectly good random number, equivalent to a randomly selected integer from 1 to N!. If you do M shuffles, you can select random numbers from a set of size N! ^ M. It doesn't take a very large N and/or M to reach the cardinality needed from cryptographic applications.

In reply to Re^8: How to generate different random numbers? by Pragma
in thread How to generate distinct random numbers? by johnnywang

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