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CompTIA Security+ study material · question 542 of 611

An implementation seeds its key generation from the system clock. What is the consequence?

  1. Key generation becomes slower
  2. The key becomes predictable, defeating an otherwise sound algorithm
  3. The key's cryptoperiod must be shortened
  4. The key cannot be stored in a hardware module
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Answer: B. The key becomes predictable, defeating an otherwise sound algorithm

Keys must come from a cryptographically secure random generator; a strong cipher with a guessable key is useless.

Source: OWASP Key Management Cheat Sheet (OWASP) — OWASP Key Management Cheat Sheet › Key Generation

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