Digital Signatures Explained: What They Are & Why You Need Them 🔒
Discover the basics of digital signatures, learn how they work, and see real-world examples of what gets signed to keep your data secure.

Practical Networking
7.9K views • Sep 9, 2024

About this video
In this video we take a look at Digital Signatures. We explain what they are, show you examples of what types of things are signed, and discuss how they provide Integrity and Authentication to what is signed. We then compare them to HMACs and MACs, which also provide Integrity & Authentication, but have a slightly different use case.
// CHAPTERS
0:00 - Intro
0:12 - Simple Definition
0:38 - Signatures are created with Private Key & verified with Public Key
1:31 - Anything can be signed
2:04 - Integrity and Authentication
2:39 - Signatures vs MACs / HMACs
4:23 - Signature Algorithms - RSA DSA
// FULL SERIES - Cryptography Essentials //
This video is part of a 16-part series covering the essentials of modern Cryptography. Explained simply, and technically accurate.
The full series is available here:
📋 https://www.youtube.com/playlist?list=PLIFyRwBY_4bQvq5PuJASilkHSVGLZtceZ
( or use the shortcut pracnet.net/ce )
00 Series Introduction
01 Hashing
02 Keys / Secret Keys
03 Symmetric Cryptography
04 Encryption
05 MAC / HMAC
06 Pseudo Random Function
07 Asymmetric Cryptography
08 Asymmetric Encryption (RSA)
09 Signatures
10 RSA Signatures
11 DSA Signatures
12 Key Exchanges
13 RSA Key Exchanges
14 DH Key Exchanges
15 Elliptic Curve Cryptography
// ADDITIONAL RESOURCES //
// SUPPORT PRACTICAL NETWORKING //
If this content benefited you, then here are TOTALLY FREE ways to show your appreciation:
- 👍 Like to help this video reach more viewers
- 💬 Comment to boost the channel's visibility
- 🔔 Subscribe to help me attract sponsors (this is the number they care about)
// CHAPTERS
0:00 - Intro
0:12 - Simple Definition
0:38 - Signatures are created with Private Key & verified with Public Key
1:31 - Anything can be signed
2:04 - Integrity and Authentication
2:39 - Signatures vs MACs / HMACs
4:23 - Signature Algorithms - RSA DSA
// FULL SERIES - Cryptography Essentials //
This video is part of a 16-part series covering the essentials of modern Cryptography. Explained simply, and technically accurate.
The full series is available here:
📋 https://www.youtube.com/playlist?list=PLIFyRwBY_4bQvq5PuJASilkHSVGLZtceZ
( or use the shortcut pracnet.net/ce )
00 Series Introduction
01 Hashing
02 Keys / Secret Keys
03 Symmetric Cryptography
04 Encryption
05 MAC / HMAC
06 Pseudo Random Function
07 Asymmetric Cryptography
08 Asymmetric Encryption (RSA)
09 Signatures
10 RSA Signatures
11 DSA Signatures
12 Key Exchanges
13 RSA Key Exchanges
14 DH Key Exchanges
15 Elliptic Curve Cryptography
// ADDITIONAL RESOURCES //
// SUPPORT PRACTICAL NETWORKING //
If this content benefited you, then here are TOTALLY FREE ways to show your appreciation:
- 👍 Like to help this video reach more viewers
- 💬 Comment to boost the channel's visibility
- 🔔 Subscribe to help me attract sponsors (this is the number they care about)
Video Information
Views
7.9K
Likes
365
Duration
5:15
Published
Sep 9, 2024
User Reviews
4.6
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