Question $4$

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Which statement is correct?

Select one:

a$.$ Using matrix transpose, Transposition Cipher is based on linear algebra.

b$.$ Transposition Cipher uses a public key to encode messages.

c$.$ Transposition Cipher shifts characters around according to a regular scheme so that the result is a permutation of the original message.

d$.$ Transposition Cipher substitutes characters in the original message according to a fixed scheme.

CLEAR MY CHOICE