June 1999
Intermediate to advanced
368 pages
8h 21m
English
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11.2. The Crypt Application
We are now going to develop a parallel application on top of our compute server. Our application is an exercise in applied cryptography, which is another way of saying we are going to write an application that breaks encrypted passwords.
11.2.1. Background
A common method of encrypting passwords, particularly in UNIX systems, is the use of a one-way encryption algorithm, which takes the user's password as input and returns the user's encrypted password. For instance, a password of “ secret” may result in the output “ BgU8DFSLhhz6Q.” One-way functions that work well for encryption have the property that, given the encrypted version of a password, it is difficult to compute the inverse of the function to produce the ...
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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.