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Published in:
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1997 | OriginalPaper | Chapter

Two Attacks on Reduced IDEA

Extended Abstract

Authors : Johan Borst, Lars R. Knudsen, Vincent Rijmen

Published in: Advances in Cryptology — EUROCRYPT ’97

Publisher: Springer Berlin Heidelberg

Included in: Professional Book Archive

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In 1991 Lai, Massey and Murphy introduced the IPES (Improved Proposed Encryption Standard), later renamed IDEA (International Data Encryption Algorithm). In this paper we give two new attacks on a reduced number of rounds of IDEA. A truncated differential attack on IDEA reduced to 3.5 rounds and a differential-linear attack on IDEA reduced to 3 rounds. The truncated differential attack contains a novel method for determining the secret key.

next chapter Combinatorial Properties of Basic Encryption Operations
Metadata
Title
Two Attacks on Reduced IDEA
Authors
Johan Borst
Lars R. Knudsen
Vincent Rijmen
Copyright Year
1997
Publisher
Springer Berlin Heidelberg
Book
Advances in Cryptology — EUROCRYPT ’97

Print ISBN: 978-3-540-62975-7

Electronic ISBN: 978-3-540-69053-5

Copyright Year: 1997

DOI
https://doi.org/10.1007/3-540-69053-0_1

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