October 2016
Beginner to intermediate
650 pages
14h 43m
English
book
Python: Penetration Testing for Developers
by Christopher Duffy, Mohit, Cameron Buchanan, Terry Ip, Andrew Mabbitt, Benjamin May, Dave Mound
Content preview from Python: Penetration Testing for Developers
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Predicting a linear congruential generator
LCGs are used in web applications to create quick and easy pseudo-random numbers. They are by nature broken and can be easily made to be predictable with enough data. The algorithm for an LCG is:
Here, X is the current value, a is a fixed multiplier, c is a fixed increment, and m is a fixed modulus. If any data is leaked, such as the multiplier, modulus, and increment in this example, it is possible to calculate the seed and thus the next values.
Getting ready
The situation here is where an application is generating random 2-digit numbers and returning them to you. You have the multiplier, modulus, and increment. ...
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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.