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Explain 

  • Confusion and Diffusion
  • How it is implemented in 
    • DES
    • AES
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Q1.

Confusion 

  1. It is a technique of ensuring that a cipher text give no clue about original plain text.
  2. They are achieved by the substitution technique.
  3. Stream cipher relies only on confusion.

Diffusion

  1. It increase the redundancy of the plain text by spreading it across rows and columns.
  2. Block cipher used both confusion and diffusion.
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