Applied Cryptography in .NET and Azure Key Vault: A Practical Guide to Encryption in .NET and .NET Core

© Stephen Haunts 2019

Stephen HauntsApplied Cryptography in .NET and Azure Key Vaulthttps://doi.org/10.1007/978-1-4842-4375-6_6

6. Symmetric Encryption

Stephen Haunts¹ 

(1)

Belper, Derbyshire, UK

 

So far, we have covered integrity by looking at hashing, and authentication by looking at hashed message authentication codes. In this chapter, we explore confidentiality by looking at symmetric encryption .

First, we look at the history of the Data Encryption Standard (DES) and its immediate successor, Triple DES. While DES and Triple DES are not recommended for use in new applications, it is still necessary to discuss them because you may need to integrate with legacy systems that still rely on them. Once we cover DES and Triple DES, we take a look at their ...