February 2018
Intermediate to advanced
396 pages
9h 38m
English
Content preview from Advanced Infrastructure Penetration Testing
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Symmetric cryptosystem
The various types of symmetric cryptosystems are as follows:
- Data Encryption Standard (DES): This has been developed by IBM. It started as Lucifer encryption and was later published by the National Institute of Standards and Technology (NIST). This encryption uses a 56-bit key:
The round function is described in the following workflow:
The key generation is done using the following workflow:
The initial and final permutations ...
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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.