Which type of ciphers rearrange or permute letters?

The correct answer is A. transposition. Transposition ciphers encrypt plaintext by rearranging (permuting) the positions of characters without changing the characters themselves - the same letters appear in the ciphertext, just in a different order (e.g., columnar transposition). Substitution ciphers, by contrast…

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Question

Options

Atransposition
Bpolyalphabetic
Csubstitution
Done-time pad

How the community answered

(19 responses)

A
95% (18)
B
5% (1)

Explanation

Transposition ciphers encrypt plaintext by rearranging (permuting) the positions of characters without changing the characters themselves - the same letters appear in the ciphertext, just in a different order (e.g., columnar transposition). Substitution ciphers, by contrast, replace each character with a different character while keeping positions the same. Polyalphabetic ciphers (e.g., Vigenère) are a form of substitution that uses multiple substitution alphabets to reduce frequency analysis attacks. A one-time pad is a theoretically unbreakable substitution cipher that uses a truly random key of the same length as the message.

Topics

#transposition cipher#classical ciphers#permutation#cryptography basics

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