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Sorry for the late answer, but I just joined. Graham has some good information, but it requires a bit of expansion and one correction. Entropy is a measure of randomness, not character set. Regardless of passwords or passphrases, length is more important than complexity. Complexity becomes more important if you are limited to a short password (20 or less ...


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Let's explore some possibilities: Cognitive output forms 1. Numbers Humans are bad at picking numbers. There is an obvious bias towards odd numbers since they are more exotic. There are polls like this one: Is 17 the “most random” number? To somewhat mitigate the bias, you could let the person say a long stream of digits (0-9), but the bias will still ...


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It's plausible that entropy could somehow be generated from brain processes, but doing it directly (e.g., "think of a random number") is, in my opinion, pretty easy to discount. In a random sequence of bits, the value of any given bit is independent of all other bits in the sequence. However, if you ask a person to generate a random sequence of bits, ...



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