SSCP: Systems Security Certified PractitionerDemo

By ISC · Question Mode

QuestionQ427

Cryptography

In which type of attack does an attacker attempt to determine the key used in encryption from several encrypted messages?

  • A Known-plaintext attack
  • B Ciphertext-only attack
  • C Chosen-Ciphertext attack
  • D Plaintext-only attack
Explanation

A ciphertext-only attack uses only intercepted ciphertexts, often multiple messages, to try to derive the encryption key or recover the underlying plaintext.

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