Question: 2. (2 pts) Explain why it is impractical to use an ideal block cipher for real-world encryption. 3.(2 pts) To make a secure block cipher,

2. (2 pts) Explain why it is impractical to use an ideal block cipher for real-world encryption. 3.(2 pts) To make a secure block cipher, why is diffusion not enough? That is, why is confusion also necessary

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