COURSE

Cryptography

Welcome to Hakatemia's cryptography course!

In this course, we will go through the basics of cryptography, the most important encryption algorithms, and their modern applications. The course is beginner-friendly and practical.

The goal is that after the course you will know what cryptography is, what it is used for, and how to choose the right encryption techniques and settings for different purposes.

DIFFICULTYBEGINNER

ESTIMATED TIME6h 50min

COURSE MODULES

0X1INTRODUCTION TO CRYPTOGRAPHY

What is cryptography? Basic concepts and uses

0X2HISTORICAL ENCRYPTION TECHNIQUES

Caesar Cipher: The Ancient Code That Changed Communication

The Enigma Machine: How WWII Codebreakers Unlocked the Greatest Mystery of the War

0X3DIVERSION FUNCTIONS

Checksums

What are hash functions and what are they used for?

Cracking Hashes: How Does It Work?

LAB

MD5 hash - a broken classic

PBKDF2, BCrypt, SCrypt and Argon2

SHA2 vs SHA3 vs PBKDF2 vs bcrypt vs SCrypt vs Argon2: Which to choose for password storage?

0X4MAC ALGORITHMS

What is MAC and why is it needed?

Different MAC algorithms

0X5RANDOM NUMBERS

Random numbers in cryptography

0X6SYMMETRIC CRYPTOGRAPHY

What is symmetric cryptography?

Block Ciphers

DES, 3DES and AES

Stream Ciphers

Initialization vector (IV) and its vulnerabilities in cryptography

0X7ASYMMETRIC CRYPTOGRAPHY

What is asymmetric cryptography?

Digital signatures

Key exchange algorithms

0X8ENCODING METHODS (ENCODING METHODS)

Encoding methods

0X9SSL/TLS AND PKI

TLS (Transport Layer Security): The foundation of Internet security

Certificates: Building blocks of digital trust

Public Key Infrastructure (PKI): The Foundation of Digital Trust

TLS Building Blocks: Cipher Suites

SSL/TLS threats

LAB

0XAKEY MANAGEMENT

What is key management and why is it important?

Key management in cloud services: AWS, GCP and Azure

On-Premise Key Management with HashiCorp Vault

CertBot and automatic renewal of certificates

HSM modules

TPM modules

0XBUSEFUL CRYPTO TOOLS

Auditing SSL/TLS settings with Qualys' SSL Labs scanner

Auditing SSH settings with Nmap

LAB

CyberChef - A browser-based cryptographic Swiss army knife

0XCCRYPTO - FINAL EXERCISE

Cryptography - Learned Practice

LAB

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