Question: a. Why was 2DES rejected as a cipher? b. How is 3DES with 3 keys different from 3DES with 2 keys? c. In what aspects

a. Why was 2DES rejected as a cipher? b. How is 3DES with 3 keys different from 3DES with 2 keys? c. In what aspects is AES different from Fiestel?

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