Cryptography & Access Control
What cryptography & access control means
Encryption, hashing, authentication and authorisation concepts.
Before you start
Not confident yet? Work through Authentication and Access first.
Worked example
One question from this skill's own question bank, shown with its full working.
Symmetric encryption uses:
- two different keys
- the same key to encrypt and decrypt
- no keys
- only hardware
Working: E.g. AES — both parties share one secret key.
Curriculum and exam alignment
Curriculum notes are a general guide to where this work normally sits. Always check the syllabus your school or examination body is currently using.
Related skills
Other Security Fundamentals skills in Cybersecurity, at the same point in the course.
Other Cybersecurity topics
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Practise cryptography & access control
8 questions with a worked answer after every attempt, and a SmartScore that tracks how close you are to mastery.