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·1 min read·By Sandesh Dhakal·CryptographyBlockchainSecurityComputer Science
Understanding Cryptography and Blockchain
A practical guide to cryptography concepts like hashing, encryption, and how they power blockchain systems.
Welcome to this multi-part series on cryptography and blockchain.
This guide focuses on the core ideas behind secure digital systems. You will learn how data stays protected, how trust is built without central authority, and how modern systems verify information.
We start with hashing, then move toward more advanced topics like digital signatures and blockchain structure.
In this series, you will learn:
- how hashing works and why it is one way
- how encryption protects sensitive data
- how digital signatures verify identity
- how blockchain links data using hashes
- how proof of work maintains network security
Each part builds on the previous one, with simple explanations and practical examples.
Use the sidebar to navigate through each topic and follow the series step by step.