The F Function of DES (Mangler Function)

Network Security: The F Function of DES (Mangler Function)

Topics discussed:

1) Introduction to the F Function or Mangler Function.

2) The Substitution and Transposition Operations in the Mangler Function.

3) Example of Expansion Permutation Function.

4) Example of how 6 bits are converted into 4 bits using Substitution Box (S Box).

5) Example of Transposition Box.

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