Question: Let hM, C, e, d, Ki denote the Vigen`ere cipher with = {0, 1, 2, 3, . . . , 9} and key of

Let hM, C, e, d, Ki denote the Vigen`ere cipher with Σ = {0, 1, 2, 3, . . . , 9} and key of length 4. Compute the size of the keyspace.

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