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The number of columns in the table used for encryption in rail fence cipher depends upon the given key value.

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The number of columns in the table used for encryption in rail fence cipher depends upon the given key value.

(a) True

(b) False

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I'd like to ask this question from Cryptography topic in portion Cryptography of Data Structures & Algorithms II

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Right answer is (b) False

To explain: The number of columns in the table of rail fence cipher is always equal to the number of letters in the plain text. It is independent of the given key value.

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