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Cracking the Code

  • Do you like solving puzzles?
  • Solving crimes?
  • The game of Cluedo?
  • Using computers?
  • Cracking codes?
  • Discovering secrets?
  • Do you see yourself as a future hacker?

Cryptography is the art of writing and solving codes

In this subject students will learn complex encryption and decryption methods, developing their mathematics and problem solving skills. Students will first look at the history of cryptography and develop basic skills and knowledge relating to ancient ciphers (dating back to the time of Julius Caesar). Students will delve into solving complex logic problems as well as learn new maths skills relating to about number theory, prime number theory as well as binary and modular arithmetic. Students will also develop their coding capabilities. Finally, with these skills, students will study modern cryptography methods and their role in IT security, such as keeping your credit card details secret or keeping online information hidden from hackers.

Note:     Students ideally require their own laptop to undertake this subject.

Skills & Knowledge

In the Victorian Curriculum, there is no learning area based specifically around Cryptography, however the skills learnt in this unit draw from various aspects of the curriculum (both learning areas and capabilities), providing students with an opportunity to meet several outcomes. Specific links are made below in the proposed Scope & Sequence. Generally, the course includes links with the following:

Learning Areas

  • English
  • Mathematics
  • History
  • Digital Technologies


  • Personal & Social Capability
  • Ethical Capability
  • Critical & Creative Thinking