Solved: What is difference between a block cipher and stream cipher, Computer Network Security

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What is difference between a block cipher and stream cipher

Problem

1. What are the essential ingredients of a symmetric cipher?

2. What are the two basic functions used in encryption algorithms?

3. How many keys are required for two people to communicate via a symmetric cipher?

4. What is the difference between a block cipher and a stream cipher?

5. What are the two general approaches to attacking a cipher?

6. Why do some block cipher modes of operation only use encryption while others use both encryption and decryption?

7. What is triple encryption?

8. Why is the middle portion of 3DES a decryption rather than an encryption?

The response should include a reference list. Using one-inch margins, Times New Roman 12 pnt font, double-space and APA style of writing and citations.

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Computer Network Security: What is difference between a block cipher and stream cipher

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