Impossible Differential Attack to SAFER+
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- IMAI Hitoshi
- Department of Electronics Engineering, Science University of Tokyo
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- KANEKO Toshinobu
- Department of Electronics Engineering, Science University of Tokyo
Bibliographic Information
- Other Title
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- SAFER+に対する不能差分利用攻撃
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Description
SAFER+ is block cipher proposed by J.L.Massey et.al. Impossible differential attack is method shifting wrong keys out exhaustively. In this paper we exhibit a differential characters of exp,log function in SAFER+. We have performed impossible differential attack to 3 in 8 rounds SAFER+ with 16 byte-keys using the characters. As the result of attack using computer over one hour, we succeeded in narrowing down to 2 key candidates at most for each 5 in 16 byte-keys. Chosen plaintext-ciphertext pair we need are 2^<17> pairs.
Journal
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- Technical report of IEICE. ISEC
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Technical report of IEICE. ISEC 99 (415), 59-66, 1999-11-09
The Institute of Electronics, Information and Communication Engineers
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Details 詳細情報について
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- CRID
- 1571980077269203712
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- NII Article ID
- 110003298732
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- NII Book ID
- AN10060811
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- Text Lang
- ja
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- Data Source
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- CiNii Articles
