What is a cipher that replaces one letter for another, possibly retaining the letter frequency of the original message?
- brute-force
- cryptanalysis
- nonrepudiation
- substitution
- transposition
- Vigenère
Explanation: A substitution cipher replaces one letter for another, possibly retaining the letter frequency in the cleartext language.
Exam with this question: Network Security 1.0 - 15.4.4 Check Your Understanding: Cryptology Terminology
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