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Which of the following correctly describes a quantum-safe encryption approach?

easy📝 Factual Q12 of 15
Cybersecurity - Emerging Security Topics
Which of the following correctly describes a quantum-safe encryption approach?
AUsing classical hashing algorithms only
BUsing longer RSA keys to resist quantum attacks
CRelying on ECC with smaller key sizes
DSwitching to symmetric encryption with stronger keys
Step-by-Step Solution
Solution:
  1. Step 1: Review quantum-safe encryption basics

    Quantum-safe encryption often involves symmetric algorithms with longer keys because they are less affected by quantum attacks.
  2. Step 2: Evaluate options for quantum safety

    Using stronger symmetric keys (like AES-256) is currently safer than relying on longer RSA or ECC keys, which quantum computers can break.
  3. Final Answer:

    Switching to symmetric encryption with stronger keys -> Option D
  4. Quick Check:

    Stronger symmetric keys resist quantum better [OK]
Quick Trick: Quantum-safe means stronger symmetric keys, not longer RSA [OK]
Common Mistakes:
MISTAKES
  • Believing longer RSA keys are quantum-safe
  • Thinking ECC with smaller keys is safer
  • Ignoring the role of symmetric key length

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