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b10-1. 雑誌掲載論文 >
このアイテムの引用には次の識別子を使用してください:
http://hdl.handle.net/10119/4430
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| タイトル: | Improved Correlation Attack on RC5 |
| 著者: | MIYAJI, Atsuko
NONAKA, Masao
TAKII, Yoshinori |
| キーワード: | RC5
a known plaintext attack
a correlation attack |
| 発行日: | 2002-01 |
| 出版者: | 電子情報通信学会 |
| 誌名: | IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences |
| 巻: | E85-A |
| 号: | 1 |
| 開始ページ: | 44 |
| 終了ページ: | 57 |
| 抄録: | Various attacks against RC5 have been analyzed intensively. A known plaintext attack has not been reported that it works on so higher round as a chosen plaintext attack, but it can work more efficiently and practically. In this paper, we investigate a known plaintext attack against RC5 by improving a correlation attack. As for a known plaintext attack against RC5, the best known result is a linear cryptanalysis. They have reported that RC5-32 with 10 rounds can be broken by 2^<64> plaintexts under the heuristic assumption: RC5-32 with r rounds can be broken with a success probability of 90% by using 2^<6r+4> plaintexts. However, their assumption seems to be highly optimistic. Our known plaintext correlation attack can break RC5-32 with 10 rounds (20 half-rounds) in a more strict sense with a success probability of 90% by using 2^<63.67> plaintexts. Furthermore, our attack can break RC5-32 with 21 half-rounds in a success probability of 30% by using 2^<63.07> plaintexts. |
| Rights: | Copyright (C)2002 IEICE. Atsuko MIYAJI, Masao NONAKA, Yoshinori TAKII, IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences, E85-A(1), 2002, 44-57. http://www.ieice.org/jpn/trans_online/ （許諾番号：08RB0096） |
| URI: | http://hdl.handle.net/10119/4430 |
| 資料タイプ: | publisher |
| 出現コレクション: | b10-1. 雑誌掲載論文 (Journal Articles)
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このアイテムのファイル:
| ファイル |
記述 |
サイズ | 形式 |
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| 73-40.pdf | | 632Kb | Adobe PDF | 見る/開く |
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