Data Encryption Standard (DES) - Cleveland State University

1 8 1 64 64 2 Initial Permutation 58 25 25 40 40 28 58 1 8 1 64 64 2 Final Permutation 16 Rounds Fig. 6.3 Initial and fi nal permutation steps in DES The permutation rules for these P-boxes are shown in Table 6.1. Each side of the table can be thought of as a 64-element array. Note that, as with any permutation table we have discussed so far ... ................
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