Question: Show that DES encryption and decryption are identical except for the order of the 48-bit keys. (Hint: running a round backwards is the same as

Show that DES encryption and decryption are identical except for the order of the 48-bit keys. (Hint: running a round backwards is the same as running it forwards but with the halves swapped, and DES has a swap after round 16 when run forwards.)

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