Challenge Yourself. Be Awesome.

See All Skills

Skill

Cryptography

Engineering

Cryptographers make systems that scramble and unscramble secret information. In the Information Age, we're essential to maintaining privacy and security.

10 Challenges

Easy
How To!
Send a message in morse code
Cryptography
Easy
Share secret messages with a scytale
Cryptography
Medium
Encrypt with a substitution cipher
Cryptography
Medium
Make a transposition cipher
Cryptography
Medium
Send an encrypted message
Cryptography
Medium
Create a keyword cipher
Cryptography
Medium
Decode a playfair cipher
Cryptography
Medium
Create a cipher device
Cryptography
Medium
Decode a message in base64
Cryptography
Hard
Encrypt using openssl
Cryptography

Our Mission

Any kid, anywhere, can learn any skill.

Contact Us
DIY for School
Buy Skill Badges

Courses

PhotographyStrange ScienceDrawing BootcampInvent Your Own MachinesBuild Anything With LEGOMinecraftSecrets of DrawingSee More

Support

Terms of ServicePrivacy PolicyCommunity GuidelinesFAQ