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Item 250 of 426 · Year 12: Programming for the Web, 16 of 59

Symmetric encryption

Term Key terms bank

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Definition

One shared secret key encrypts and decrypts; fast, but the key must be shared safely.

Example: Fast for large data.

Found in: school notes.

Short version to memorise (key terms bank)

One shared key.

Where you'll use it in the test

Syllabus area: Y12 Programming for the Web.

Question types it can appear in

Where it has appeared in the paper

Secure Software Architecture (Part B). Part letters follow each paper’s own layout.

Related past questions

How to use it

A model sentence

General advice, built from the definition and example above

“One shared secret key encrypts and decrypts; fast, but the key must be shared safely.” Then apply it: Fast for large data.

In a short answer, give the definition in your own words first, then tie it to the situation in the question. Do not copy the example above unless it fits the scenario.

Command words used with it

From the linked past questions
  • Identify: Recognise and name. (Sample exam Q3 (1 mark): Encryption)

Official worked answer

Sample exam Q3 (1 mark): Encryption (1 mark): official criteria and sample answer

Criteria

1: Identifies the correct answer.

Sample answer

Implement data encryption

Open the question page

Go deeper

Check yourself

Explain “Symmetric encryption” in one sentence, give an example, and name a question type that could test it.

Reveal the answer

One shared secret key encrypts and decrypts; fast, but the key must be shared safely.

Example: Fast for large data.

Could be tested as: Multiple choice, Matching or table, Fill in the blanks, Short answer.