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In which cryptography technique are the plaintext characters replaced with another set of characters?
Vignere cipher
Substitution cipher
One-time pad
Such ciphers (Atbash, Caesar) are called Substitution ciphers *** Minor edit to correct the sentence construction in the question *** Edit #2: Aren't there two answers to this question? Vignere cipher and substituion cipher are very similar? https://en.wikipedia.org/wiki/Vigenère_cipher Edit #3: "Vignere" cipher is nonsense, Vigenère cipher is "...a polyaphabetic substitution cipher system" (Official Study Guide 7th Ed. p. 203).
** I don’t think the exam would try to deceive the tester by spelling Vigenere ‘vignere’. That doesn’t accomplish in testing anything. I think that option should be swapped out, since it’s technically a substitution cipher.
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