Presentation 2000/11/6
An Idea to Build More Secure Cryptosystem Using Conventional Block Ciphers
Norio Terauhi, Atsuko Miyaji,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) If it is a situation where the security of conventional cipher deteriorate and we can not prepare a new algorithem immediately, we must improve the security of conventional cipher. In this paper we propose an idea to build more secure cryptosystem using an underlying block cipher. The existing schemes such as Triple DES using DES do not provide security corresponding to the full key length. Our scheme provides the seurity corresponding to the full key length under certain conditions. Furthermore we show that breaking our scheme is at least as hard as breaking the underlying block cipher.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) DES / AES / Trilple DES / security evaluation
Paper # ISEC2000-86
Date of Issue

Conference Information
Committee ISEC
Conference Date 2000/11/6(1days)
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Paper Information
Registration To Information Security (ISEC)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) An Idea to Build More Secure Cryptosystem Using Conventional Block Ciphers
Sub Title (in English)
Keyword(1) DES
Keyword(2) AES
Keyword(3) Trilple DES
Keyword(4) security evaluation
1st Author's Name Norio Terauhi
1st Author's Affiliation School of Information Science, Japan Advanced Institute of Science and Technology(JAIST)()
2nd Author's Name Atsuko Miyaji
2nd Author's Affiliation School of Information Science, Japan Advanced Institute of Science and Technology(JAIST)
Date 2000/11/6
Paper # ISEC2000-86
Volume (vol) vol.100
Number (no) 421
Page pp.pp.-
#Pages 7
Date of Issue