> Only if predictable have the same bits number as random. If not all bits of 
> random XOR-ed (i.e. half of random), it becomes weaker.

Sigh. Exactly. The other half is _not_random_; I am not talking about it.

> BTW, if they have the same bits number,
> there is no reason to XOR random with predictable, random is not become 
> more random.

If you doubt your randomness, XORing two quantities can improve it, if
there is coincidence of random/non-random bits.

M
--
Mark Murray
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