Presentation 1997/7/18
Pseudorandomness of Block Ciphers MISTY1
Makoto Sugita,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In order to analyze the LRFness of a block cipher MISTY1 proposed by Matsui, we introduce the δ-condition 1' and δ-condition 3. We prove that δ-condition 1' implies LRF, 4-round iteration of DES-like transformation satisfies the 1/2^-condition 1', 3-round iteration of MISTY-like transformation satisfies the 1/2^n-condition 2 and (3, ..., 3)-round iteration of MISTY-like transformation satisfies the 1/2^n-condition 3, which means that the (4, 3, ... , 3)-round iteration of MISTY1-like transformation.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) MISTY1 / MISTY1-like transformation / Locally random function / Recursive structure
Paper # ISEC97-19
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Committee ISEC
Conference Date 1997/7/18(1days)
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Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Pseudorandomness of Block Ciphers MISTY1
Sub Title (in English)
Keyword(1) MISTY1
Keyword(2) MISTY1-like transformation
Keyword(3) Locally random function
Keyword(4) Recursive structure
1st Author's Name Makoto Sugita
1st Author's Affiliation NTT Wireless Systems Laboratories()
Date 1997/7/18
Paper # ISEC97-19
Volume (vol) vol.97
Number (no) 181
Page pp.pp.-
#Pages 12
Date of Issue