Presentation 2008-09-12
New Trapdoors in Knapsack Public-Key Cryptosystem with Two Sequences as Public Key
Yasuyuki MURAKAMI, Takeshi NASAKO, Masao KASAHARA,
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Abstract(in English) Present authors proposed a new class of knasack PKC (KMN PKC) which uses two sequences as the public key. KMN PKC uses a super-increasing sequence as the trapdoor based on Merkle-Hellman knapsack cryptosystem. In this paper, we propose new trapdoors in KMN type knapsack scheme in which two sequences are used as the public key. We also propose the simple class of the proposed scheme. We show that the proposed scheme can be secure against the low-density attack because the density can be made as large as one desires. We also discuss the security of the secret key of the proposed scheme.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) public-key cryptosystem / knapsack cryptosystem / trapdoor / Merkle-Hellman cryptosystem / super-increasing sequence / low-density attack
Paper # ISEC2008-64
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Committee ISEC
Conference Date 2008/9/5(1days)
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Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) New Trapdoors in Knapsack Public-Key Cryptosystem with Two Sequences as Public Key
Sub Title (in English)
Keyword(1) public-key cryptosystem
Keyword(2) knapsack cryptosystem
Keyword(3) trapdoor
Keyword(4) Merkle-Hellman cryptosystem
Keyword(5) super-increasing sequence
Keyword(6) low-density attack
1st Author's Name Yasuyuki MURAKAMI
1st Author's Affiliation Osaka Electro-Communication University()
2nd Author's Name Takeshi NASAKO
2nd Author's Affiliation Osaka Electro-Communication University
3rd Author's Name Masao KASAHARA
3rd Author's Affiliation Osaka Gakuin University
Date 2008-09-12
Paper # ISEC2008-64
Volume (vol) vol.108
Number (no) 207
Page pp.pp.-
#Pages 8
Date of Issue