TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
New Analysis of Reduced-Version of Piccolo in the Single-Key Scenario |
| 영문제목(English Title) |
New Analysis of Reduced-Version of Piccolo in the Single-Key Scenario |
| 저자(Author) |
Ya Liu
Liang Cheng
Fengyu Zhao
Chunhua Su
Zhiqiang Liu
Wei Li
Dawu Gu
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| 원문수록처(Citation) |
VOL 13 NO. 09 PP. 4727 ~ 4741 (2019. 09) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
The lightweight block cipher Piccolo adopts Generalized Feistel Network structure with 64 bits of block size. Its key supports 80 bits or 128 bits, expressed by Piccolo-80 or Piccolo-128, respectively. In this paper, we exploit the security of reduced version of Piccolo from the first round with the pre-whitening layer, which shows the vulnerability of original Piccolo. As a matter of fact, we first study some linear relations among the round subkeys and the properties of linear layer. Based on them, we evaluate the security of Piccolo-80/128 against the meet-in-the-middle attack. Finally, we attack 13 rounds of Piccolo-80 by applying a 5-round distinguisher, which requires 244 chosen plaintexts, 267.39 encryptions and 264.91 blocks, respectively. Moreover, we also attack 17 rounds of Piccolo-128 by using a 7-round distinguisher, which requires 244 chosen plaintexts, 2126 encryptions and 2125.49 blocks, respectively. Compared with the previous cryptanalytic results, our results are the currently best ones if considering Piccolo from the first round with the pre-whitening layer.
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| 키워드(Keyword) |
Lightweight Block ciphers
Piccolo
the distinguisher
meet-in-the-middle attacks
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| 파일첨부 |
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