Impossible Differential Attack against 14-Round <i>Piccolo</i>-80 without Relying on Full Code Book

• TODO Yosuke

  NTT Secure Platform Laboratories, NTT Corporation

抄録

Piccolo is a lightweight block cipher proposed by Sony Corporation in 2011. The designers showed two key modes, Piccolo-80 and Piccolo-128, which use an 80-bit secret key and a 128-bit one, respectively. Isobe and Shibutani estimated the security of Piccolo-80, and they showed that 14-round (reduced) Piccolo-80 w/o whitening keys is vulnerable against the Meet-in-the-Middle attack. The time complexity of their attack is about 2⁷³, but unfortunately it requires 2⁶⁴ texts, namely, the full code book. In this paper, we propose a new impossible differential attack against 14-round Piccolo-80 w/o whitening keys, and it can recover the secret key without relying on the full code book. The time complexity is 2⁶⁸ and it uses 2^62.2 distinct know plaintexts.

収録刊行物

• IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

  IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E99.A (1), 154-157, 2016

  一般社団法人 電子情報通信学会

キーワード

• impossible differential attack
• <i>Piccolo</i>-80

詳細情報

• CRID: 1390282681287798784
• NII論文ID: 130005115230
• DOI: 10.1587/transfun.e99.a.154
• ISSN: 17451337
• ISSN: 09168508
• Web Site: https://www.jstage.jst.go.jp/article/transfun/E99.A/1/E99.A_154/_pdf
• 本文言語コード: en
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