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Using the APA writing style, write a 2–3 page paper that answers the questions below

Computer Science

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Using the APA writing style, write a 2–3 page paper that answers the questions below. Be prepared to fully support your answers. Explain in your own words the following:  

•  What is the history of DES, and why is s-DES studied?
•  How does DES and 3DES work? Provide an example of each.
•  Explain the following ingredients that decide the algorithm in the Fiestel cipher: 
  • Block size Key size
  • Subkey generation
  • Round function
  • Fast software encryption/decryption
  • Ease of Analysis