Crytpography Overview

Understanding the Need for and Uses of Cryptography

Gregory M. Kapfhammer

September 9, 2024

Crytpography Overview Understanding the Need for and Uses of Cryptography Gregory M. Kapfhammer September 9, 2024

Crytpography Overview
Getting Started in Computer Security
What is a technology practice that you need to rethink from the perspective of computer security? Why? Next?
What is cryptography?
Important Insight: cryptography is one of the key building blocks of computer security!
Key Reminder: it is deceptively difficult to deploy cryptographic algorithms correctly!
Admonition: avoid the temptation to “roll your own” cryptography algorithms! Problems!
When do you use cryptography?
Cryptography Terms
Trapdoor Functions
Cryptographic Hash Functions
Symmetric Encryption
Asymmetric Encryption
Steam and Block Ciphers
Combining Cryptography Algorithms
Case Study: Let’s Encrypt
Cool, Let’s Encrypt is open source and free and supported by Netlify!
Applications of Cryptography
Security Synapses
Revisiting Symmetric Encryption
Revisiting Symmetric Decryption
Recap on Symmetric Encryption
Revisiting Content Hashing
Exploring Asymmetric Encryption
Exploring Asymmetric Decryption
Recap on Asymmetric Encryption
Wrapping Up on Encryption

Getting Started in Computer Security