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Impossible differential cryptanalysis of Piccolo lightweight block cipher

Azimi, S. A ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1109/ISCISC.2014.6994028
  3. Abstract:
  4. This paper analyzes the Piccolo family of lightweight block ciphers against the impossible differential cryptanalysis. A combination of some ploys such as decreasing the S-box computations, finding an appropriate propagation of differentials, utilizing hash tables and using the linearity of the key-schedule as well as disregarding subkeys of two rounds lead to 12-round and 13-round impossible differential attack on Piccolo-80 and 15-round attack on Piccolo-128. The time and data complexity of the attack against Piccolo-80 is 255.18 and 236.34 for 12-round and 269.7 and 243.25 for 13-round, respectively. Moreover, the time and data complexity for 15 rounds cryptanalysis of Piccolo-128 are 2125.4 and 258.7, respectively
  5. Keywords:
  6. Lyapunov methods ; Security of data ; Block ciphers ; Cryptanalysis ; Data complexity ; Differential attacks ; Impossible differential ; Impossible differential cryptanalysis ; Lightweight block ciphers ; Piccolo
  7. Source: 2014 11th International ISC Conference on Information Security and Cryptology, ISCISC 2014 ; Sep , 2014 , p. 89-94
  8. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6994028&sortType%3Dasc_p_Sequence%26filter%3DAND%28p_IS_Number%3A6994006%29