ACARA 7-8 Digital Technologies: Data encryption and applying protections
Students explain and apply encryption such as the Caesar cipher to keep data private, compare it with modern methods, and combine protections to counter threats in realistic scenarios.
One content description (AC9TDI8P13) from the full ACARA Digital Technologies Years 7–8 — Networks and Cyber Threats journey. All 31 modules below are in that journey too, with the same content — add just these to a class, or the whole strand.
Modules (31)
1
Why data is encrypted
2
Encryption and decryption
3
Plaintext
4
Ciphertext
5
Encryption key
6
Caesar cipher
7
Encrypting a message with a Caesar shift
8
Wrapping around from Z to A
9
Decrypting a message with a Caesar shift
10
Using a cipher wheel or strip
11
Why encrypted data is useless to an interceptor
12
Breaking a Caesar cipher by trying every shift
13
Frequency analysis of ciphertext
14
Substitution cipher
15
Transposition cipher
16
Polyalphabetic ciphers
17
Vigenere cipher
18
Symmetric encryption
19
The risk of sharing a symmetric key
20
Keeping an encryption key secret
21
Asymmetric encryption
22
AES
23
Why a Caesar cipher is weak compared with modern encryption
24
HTTPS and the padlock
25
Protecting data in transit
26
Protecting data at rest
27
Explaining encryption in short sentences
28
Choosing a solution to counter a threat
29
Layers of protection
30
Applying protections to a scenario
31
Creating a cyber safety awareness message
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