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information and web security please help 1. How many DES keys, on the average, encrypt a particular plainted block to a particular ciphertext block? (Assume

information and web security please help

1. How many DES keys, on the average, encrypt a particular plainted block to a particular ciphertext block? (Assume that each DES key maps a particular plaintext block to all possible ciphertext blocks equally likely.) (5 points)

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