geeman@best.com wrote:
(P)RNG's just aren't that likely to produce a key of 010101010..... nor 001100110011... etc etc
Right. A good CSPRNG is ulikely to produce the pattern 010101010101. It's also unlikely to produce the pattern 0011001100110011. Oh, and it's also unlikely to produce 01100100101001011. In fact, a good 32-bit CSPRNG has only a 1/2^32 chance of producing any particular bit pattern. Of course, another way of saying that is that it's just as likely to get an "obvious" bit pattern as it is to get any other one. You can't just throw away part of the keyspace based on such bogus reasoning. (There may be other reasons to throw away part of the keyspace, of course.) ______c_________________________________________________________________ Mike M Nally * IBM % Tivoli * Austin TX * How quickly we forget that mailto:m5@tivoli.com mailto:m101@io.com * "deer processing" and "data http://www.io.com/~m101/ * processing" are different!