In which of the following cipher the plain text and the ciphered text does not have same number of letters?
A. keyword cipher
B. vigenere cipher
C. transposition cipher
D. additive cipher
Answer:B
In which of the following cipher the plain text and the ciphered text does not have same number of letters?
A. keyword cipher B. vigenere cipher C. transposition cipher D. additive cipher
Explanation: In transposition cipher and monoalphabetic cipher the number of letters in the plain text and ciphered text remain the same. But in polyalphabetic cipher, the number of letters changes. So here as vigenere cipher is the only polyalphabetic cipher so it will be the answer.