Research Article
Improved Biclique Cryptanalysis of the Lightweight Block Cipher Piccolo
Table 3
Key schedule of Piccolo.
| Piccolo-80 | Piccolo-128 | Round i | Round key | Master key | Round i | Round key | Master key |
| Initial | | | Initial | | | 0 | () | () | 0 | () | () | 1 | () | () | 1 | () | () | 2 | () | () | 2 | () | () | 3 | () | () | 3 | () | () | 4 | () | () | 4 | () | () | 5 | () | () | 5 | () | () | 6 | () | () | 6 | () | () | | | | | | | 18 | () | () | 24 | () | () | 19 | () | () | 25 | () | () | 20 | () | () | 26 | () | () | 21 | () | () | 27 | () | () | 22 | () | () | 28 | () | () | 23 | () | () | 29 | () | () | 24 | () | () | 30 | () | () | Final | | | Final | | |
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