Encryption Basics: How encryption, hashing and keys protect your data. It is a 53-page illustrated PDF from the oJAYo team, written in plain language and up to date for 2026.
Encryption scrambles data so only people with the right key can read it. It protects your online banking, messages, passwords, cloud files and almost everything else on the internet, usually without you noticing.
This book explains encryption and related cryptography for beginners: symmetric and asymmetric encryption, hashing, password storage, digital signatures, certificates, TLS, key management and the coming move to post-quantum cryptography. It uses plain language and small, tested Python examples, and it covers current practice as of late 2026.
Why buy Encryption Basics?
- Created by the oJAYo team of security experts: written by practitioners, then technically reviewed and edited.
- Turns a big security topic into clear, practical steps you can use at work right away.
- 38 short, focused chapters you can read in one sitting each, so steady progress fits around a busy week.
- Plain-language explanations with diagrams, so you understand the why as well as the how.
- Up to date for 2026, covering today’s threats, tools and frameworks.
- Defensive and practical: checklists and real-world examples instead of jargon.
- Ready-to-use checklists you can take straight into your next project or review.
- Instant PDF download that works on any laptop, tablet or phone, yours to keep.
What you will learn
- What encryption is
- Goals of cryptography
- Keys
- A short history
- Symmetric encryption
- Asymmetric encryption
- Hybrid encryption
- Randomness
- Encoding, encryption and hashing
- Authenticated encryption
- Hashing
- Password storage
- Message authentication codes
- Digital signatures
Who this book is for
- Beginners in IT and security.
- Developers who use cryptography libraries.
- Managers making decisions about data protection.
What is inside
- Format: PDF, instant download
- Length: 53 pages
- Chapters: 38
- Diagrams and screens: 16
- Created by: the oJAYo expert team (written, technically reviewed and edited)
- Publisher: oJAYo.com
- Published: 2026
- Series number: No. 130
Frequently asked questions
What does Encryption Basics cover?
Topics include “Goals of cryptography”, “Keys”, “A short history”, “Symmetric encryption” and “Asymmetric encryption”, across 38 chapters with 16 diagrams and illustrated screens.
Who should read Encryption Basics?
Beginners in IT and security. Developers who use cryptography libraries. Managers making decisions about data protection.
Is it suitable for beginners?
Yes. No prior experience is assumed: each chapter explains the idea first and then shows how it works in practice.
What format is the book, and how do I get it?
It is a 53-page PDF. After checkout you get an instant download link, and you can read it on any device.
Is the content up to date?
Yes. It was written, reviewed and published in 2026 by the oJAYo team at oJAYo.com and reflects current versions, tools and practices.
Product, protocol and company names mentioned in this book are trademarks of their respective owners.
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