DES Supplementary Material - Rotations in The Key-schedule

Rotations in The Key-schedule

Rotations
Round
number		 Number of
left rotations
1 1
2 1
3 2
4 2
5 2
6 2
7 2
8 2
9 1
10 2
11 2
12 2
13 2
14 2
15 2
16 1

Before the round subkey is selected, each half of the key schedule state is rotated left by a number of places. This table specifies the number of places rotated.

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