The old crypto literature has lots of ways of combining RNGs to make better ones (for some values of "better"). You're generally better off just designing one with known properties.
I was thinking of it as a way of protecting against design flaws. Similarly, I think -- and Ed Snowden recently said the same thing -- that for max security one should wrap things in a sequence of different kinds of cryptography.
And by the way, not all parts have to be individually robust.
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The old crypto literature has lots of ways of combining RNGs to make better ones (for some values of "better"). You're generally better off just designing one with known properties.
I was thinking of it as a way of protecting against design flaws. Similarly, I think -- and Ed Snowden recently said the same thing -- that for max security one should wrap things in a sequence of different kinds of cryptography.
And by the way, not all parts have to be individually robust.