© 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 
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 ...

Get Applied Cryptography in .NET and Azure Key Vault: A Practical Guide to Encryption in .NET and .NET Core now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.