I hope somebody can help me to find out how DES P box has designed. I am doing DES by hand so I want to know how these numbers are arranged?

  • $\begingroup$ Did you have a look at this question / answer? It does seem to contain some references in the question. $\endgroup$
    – Maarten Bodewes
    Commented Nov 1, 2019 at 14:49
  • $\begingroup$ I want know how elements of PC-2 are selected. I have seen the answer in stackoverflow.com/questions/21717596/… $\endgroup$ Commented Nov 2, 2019 at 13:33
  • $\begingroup$ but how key tab b and key tab s is created is still not clear to me $\endgroup$ Commented Nov 2, 2019 at 13:40


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