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_8

8. Digital Signatures

Stephen Haunts¹ 

(1)

Belper, Derbyshire, UK

 

So far, we have covered three pillars of our four pillars of cryptography. We discussed integrity and how cryptographic primitives, like hashing with SHA-256, can help us solve that problem. We then discussed authentication and I explained hashed message authentication codes, such as HMAC-SHA-256. A HMAC is similar to a standard hashing function, but it differs in that you have to provide a key to the hashing function which means for anyone to calculate the same hash code for a piece of data, they also need to be in possession of that key, this is why it is ...