Improved Biclique Cryptanalysis of the Lightweight Block Cipher Piccolo

Table 2

Summary of biclique cryptanalytic results on Piccolo.

Target algorithm	Round	Data	Computations	Attack type	Reference
Piccolo-80	25 (without the postwhitening key)	2^48	2^78.95	Biclique	Reference [2]
Piccolo-80	25 (full)	2^48	2^79.34	Biclique	Reference [5]
Piccolo-80	25 (full)	2^40	2^79.22	Biclique	Section 4.2
Piccolo-128	28 (without the prewhitening key)	2^24	2^126.79	Biclique	Reference [2]
Piccolo-128	31 (full)	2^48	2^127.36	Biclique	Reference [5]
Piccolo-128	31 (full)	2^24	2^127.14	Biclique	Section 4.3
Piccolo-128	31 (full)	2^8	2^127.30	Biclique	Section 4.4