Cryptanalysis of LOKI91
Cryptanalysis of LOKI91
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DOI:
10.1007/3-540-57220-1_62
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发表时间:
1992-12
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影响因子:
--
通讯作者:
L. Knudsen
中科院分区:
文献类型:
--
作者:
L. Knudsen
In this paper we examine the redesign of LOKI, LOKI 91 proposed in [5]. First it is shown that there is no characteristic with a probability high enough to do a successful differential attack on LOKI 91. Secondly we show that the size of the image of the F-function in LOKI 91 is 8/13×232. Finally we introduce a chosen plaintext attack that reduces an exhaustive key search on LOKI 91 by almost a factor 4 using 233+2 chosen plaintexts.