November 2022
Beginner
400 pages
15h 6m
English
book
Ethical Hacking: Techniques, Tools, and Countermeasures, 4th Edition
by Michael G. Solomon, Sean-Philip Oriyano
Content preview from Ethical Hacking: Techniques, Tools, and Countermeasures, 4th Edition
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Symmetric Encryption
Symmetric encryption gets its name from the fact that algorithms of this type use the same key to encrypt and decrypt data. When encrypting a given piece of data, there are two main approaches any algorithm can use: stream processing or block processing. Stream ciphers (algorithms that carry out stream processing) operate one bit at a time by applying a pseudorandom key to the plaintext. In a block cipher, data is first divided into fixed lengths, or blocks (often 64 bits). Then, all the bits in a block are transformed by the cipher to produce the ciphertext. The output size of each of these ciphers is the same as the input size, which means they can be used for real-time applications, such as voice and video encryption. ...
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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.