April 2005
Intermediate to advanced
312 pages
9h 16m
English
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Entropy Is a Terrible Thing to Waste
Because it is next to impossible to accurately predict the amount of entropy collected from a user in a short run, in order to prevent the predictable PRNG output problem discussed previously, all implementations include the shortcut or internal PRNG state in the process of generating new output. The previous output becomes a part of the equation used to calculate the next PRNG value.
In this design, once a sufficient amount of entropy is initially gathered in the system, the most recent data used to replenish the entropy pool does not need to be fully random at all times in order to ensure basic security.
Yet, there is another problem. If the implementation runs for a prolonged period of time on old, inherited ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.