Re: why compression doesn't perfectly even out entropy

Is it possible to find a percentage of the key space to eliminate that will optimize security assuming that the attacker will try the easy stuff first (and is it possible to quantify "easy stuff")?

If you eliminate all repeating byte sequences, such as 00 00 or 7F 7F, you will reduce your possible entropy by .07058% (7.99435 bits per byte), and eliminate the (astronomically remote) possibility of Hamlet or some other English text popping out of your RNG/PRNG. As long as your key is long enough to withstand this slight entropy reduction, you are still OK.