We're sorry but this app doesn't work properly without JavaScript enabled. Please enable it to continue.

Learn Cryptography

Learn how encryption, password security, and ciphers work at a lower level than most developers are used to.

Continue in Guest Mode


Lane is a back-end engineer and the lead instructor of Boot.dev. He has taught over one million students worldwide, on Boot.dev, FreeCodeCamp, YouTube and the Backend Banter podcast. Lane worked as a backend engineer writing Go, Python and TypeScript, then moved into engineering management and a couple of years later left to build Boot.dev full-time.









Learn Cryptography

Ever wondered how your data stays safe online? This deep-dive in the Go programming language will teach you all about encryption, password security, ciphers, and more. After you master the fundamentals, you'll learn how each cryptographic primitive is used in real-world applications.

16 Hours

of interactive content

127 Addicting

lessons and quizzes

Earn a certificate

of completion

A key part of

the back-end track

Avoid tutorial hell

by writing a ton of code

Learn online

to not interrupt life

Chapter List

Symmetric Encryption
Learn the basics of cryptography: encrypting and decrypting a secret message with a key
To be able to work with encrypted data, you need to understand how information is encoded in different formats
Brute Force
Learn about the most primitive, but most important kind of crypto attack
Caesar Cipher
Learn about the fundamentals of ciphers, starting with Julius Caesar's famous cipher
Study the importance of the XOR operation in cryptography and how it can be used to create the perfect cipher
Stream Ciphers
Stream ciphers can be used to encrypt data as it flows through a system
Block Ciphers
Block ciphers are commonly used to encrypt large amounts of data at rest, like entire hard drives
DES is an older block cipher that's important to understand to appreciate modern block ciphers
AES is a secure, modern block cipher that's used in many production applications
Asymmetric Encryption
Asymmetric encryption is used in HTTPS, digital signatues, and really anywhere two parties need to securely communicate
RSA is one of the most popular asymmetric encryption algorithms
Hash Functions
Hashing has many applications in cryptography, including password security and message integrity
Digital Signatures
Digital signatures are a way to prove that a message was sent by a particular party
Key derivation functions are how we derive keys from passwords or from other keys securely

Boot.dev Membership FAQ

How long will it take to learn enough to be hired?

It's completely up to you. The time it will take you to be "job ready" will depend on how much you already know, how often you study, and how long you study for. That said, the backend career path takes many people about 12 months.

Should I include Boot.dev projects in my resume and portfolio?

Absolutely! If you built it, use it. You'll build several personal projects while completing our curriculum, and our final course about finding jobs will show you how to construct a job-ready portfolio.

What is Boot.dev? A bootcamp? An online school?

We're not a $10,000 bootcamp.

We're not a $50,000 university degree.

We are a self-paced, gamified online learning platform for back-end web development. You can learn with us for the price of a gym membership.

What will I get as a member?

You can demo the first few chapters of each course with full interactivity, but after that you'll be in "guest mode" or "read only" mode. In guest mode you won't be able to complete lessons, take quizzes, or do the interactive parts of the courses.

As a paid member you get access to everything.

What makes Boot.dev different?

You can read all about our methodology here. In a nutshell, we're laser focused on teaching backend-development, which is somewhat of a rarity in online learning. We're also focused on solving what we believe is the hardest problem with online learning: boredom.

If you prefer coding rather than watching, and your struggle with online learning is staying motivated and engaged, we think you'll like learning with us.

Can I cancel my membership?

We absolutely hate dark patterns, so we've made it easy to cancel your subscription any time. You can cancel your membership any time from your settings and you won't be billed again.

Do you offer refunds?

If for any reason you feel you aren't getting enough value out of the platform, we don't want your money. We have a simple return policy. Just contact us within 30 days of your purchase you're entitled to a full refund.

Do you offer discounts for purchasing power parity?

Yes! We believe in being as fair as possible to learners around the world, and that means pricing that reflects respective earning power.

If you're seeing pricing in anything other than USD, then you're already seeing discounted pricing for your country. If you're not seeing discounted pricing, but you are from a country with lower purchasing power, please let us know and we'll get you a discount.

Can my employer pay for my membership?

Absolutely! We have team plans that let your manager pay for your membership and those of your team, while managing billing all in one place. To get started just check out the teams page. You'll need to be logged in.

Can I buy a Boot.dev membership for someone else?

For sure, just check out the gifts page. You'll be able to purchase a redeemable code that you can give to a friend.

How do I redeem my gifted membership code?

Enter your code on the redemption page to activate your membership.

My card is getting declined, what can I do?

This is almost always because your bank is rejecting international transactions (we are based in the United States and use Stripe for payments). You should be able to contact the customer service department of your credit card company or your Bank and get the transactions approved or your card unlocked.