Question: 3. (10 points) Suppose 1 and 2 are encryption procedures of two substitution ciphers and 3 be a permutation. a. Let be a new encryption

3. (10 points) Suppose 1 and 2 are encryption procedures of two substitution ciphers and 3 be a permutation.

a. Let be a new encryption procedure that defined by first applying 1 then 2, is more secure than 1 and 2? Why? b. Let be a new encryption procedure that defined by first applying 1 then 3, is more secure than 1 and 3? Why?

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