What is the practice and study of determining the meaning of encrypted information, without access to the shared secret key?

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What is the practice and study of determining the meaning of encrypted information, without access to the shared secret key?

  • brute-force
  • cryptanalysis
  • nonrepudiation
  • substitution
  • transposition
  • Vigenère

Explanation: Cryptanalysis is the study of determining the meaning of coded messages without access to message key.

Related exam: Network Security 1.0 - 15.4.4 Check Your Understanding: Cryptology Terminology