Cryptography assumes unpredictable numbers, and real systems have repeatedly failed to supply them. The scored answer gives the causes, the famous failures, and the rules that prevent repeats.
Make your first attempt
What would you say before reading the answer?
- 01 State the assumptions your answer depends on.
- 02 Explain the mechanism and choose a control.
- 03 Name a condition that would change your decision.
The worked answer includes an approach, scoring criteria and follow-up questions. Compare the reasoning with your own.
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