Cryptography V2

Course badge for V2 Cryptography - Schools Cyber Security Challenge

Learn the techniques to start you on your way to becoming a cyber security expert!

This Challenge introduces basic cryptography concepts using data representation, which impacts the way we secure online communication. It teaches classic cryptographic ciphers like rotation, XOR and mixed-substitution, and explains the techniques used to break these forms of encryption. The challenge also explores how cryptography can be used to hide messages in images and sound!

Hear from cyber security experts who share what it's like to work in the cyber security industry, and how the skills and knowledge you learn through these activities can set you up for an exciting career after school.

This Challenge is a part of the Schools Cyber Security Challenges series, developed by Grok Academy in partnership with ANZ, Australian Government: Australian Signals Directorate, AWS, BT, Commonwealth Bank, Australian Government: Department of Industry, Science and Resources, Fifth Domain, NAB and Westpac.

Your current score is: 0 points.

1.
Representing data
1. Hidden message 0 /1
2. What's the binary number? 0 /1
3. What's the binary? 0 /1
4. Numbers to Emoji 0 /1
5. Find the coordinates 0 /1
6. Secret meeting place 0 /1
7. Trick Troll! 0 /1
2.
Single key ciphers
1. What is the secret key? 0 /1
2. Order the tasks 0 /1
3. Algorithm to shift letters 0 /1
4. Encrypting messages 0 /1
5. The mystery of decryption 0 /1
6. What is the secret (XOR) key? 0 /1
7. Mission XOR 0 /1
3.
Frequency analysis
1. Mixed substitution 0 /1
2. Crack this sentence 0 /1
3. Decrypt this song! 0 /1
4. Analyse this song! 0 /1
5. Location vigenère 0 /1