Výsledky vyhledávání - "Yasuyuki Murakami"

Cast Iron Smelting and Fining: An Iron Smelting Site of the Eastern Han Dynasty in Xuxiebian, Sichuan Province, China

Autor: Yingdong Yang, Yasuyuki Murakami, Chunyan Ma, Yuniu Li, Zhiqing Zhou, Yingfu Li

Publikováno v: Sungkyun Journal of East Asian Studies. 19:91-111

In this article, we introduce the excavation of an iron smelting site at Xuxiebian 許鞋匾, Pujiang 蒲江 County, Sichuan 四川 Province in the PRC. Two excavations were carried out in 2007 and 2011, and a total of four bowl-shaped furnaces, five

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::23c775fb39d0e6a728f713650865d4d7
https://doi.org/10.21866/esjeas.2019.19.1.005

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Security of Knapsack Cryptosystem Using Subset-Sum Decision Problem against Alternative-Solution Attack

Autor: Yasuyuki Murakami, Ryuichi Sakai

Publikováno v: ISITA

In 2012, Murakami, Hamasho and Kasahara proposed a knapsack PKC based on the subset sum decision problem. Nagao and Morii proposed an attack which is effective for this type of the knapsack scheme by computing integer solutions of the knapsack proble

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::88c288d078f5957f8b29622e6de2b737
https://doi.org/10.23919/isita.2018.8664306

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Equivalent Secret Key Attack against Knapsack PKC based on Subset Sum Decision Problem

Autor: Ryuichi Sakai, Yasuyuki Murakami

Publikováno v: ISITA

The security of most of the knapsack type public key cryptosystem(PKC) depends on the computational subset sum problem. In 2012, a knapsack PKC based on the subset sum decision problem is proposed by Murakami, Hamasho and Kasahara. An attack against

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::17f6c39ecf1de6ccb64f3c5dce943c9c
https://doi.org/10.23919/isita.2018.8664362

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A Systematic Encryption Algorithm for Knapsack Scheme Using Random Sequence

Autor: Yasuyuki Murakami, Shinsuke Hamasho, Masao Kasahara

Publikováno v: Journal of Communications and Information Sciences. 3:26-32

Authors, formerly, proposed a new knapsack cryptosystem which uses a random sequence as its secret key. In this paper we first propose a systematic encryption algorithm for this cryptosystem. We then evaluate the amount of information of plaintext wh

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c6874e7e9b0db41cbc1066196ed208c1
https://doi.org/10.4156/jcis.vol3.issue3.4

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Decryption Method for Differential Knapsack PKC

Autor: Masao Kasahara, Takumi Mine, Yasuyuki Murakami

Publikováno v: Journal of Communications and Information Sciences. 3:82-89

Murakami and Kasahara proposed the differential knapsack scheme at SCIS2011 and ICCIT2011. The decryption of this scheme requires to solve the small subset sum problem. The space-time tradeoff method (STT) can be applied to solve the subset sum probl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4de79542326d16849415ea378ae6e613
https://doi.org/10.4156/jcis.vol3.issue2.10

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New Trapdoor Sequences in Modular Knapsack Cryptosystem

Autor: Masao Kasahara, Yasuyuki Murakami

Publikováno v: Journal of Communications and Information Sciences. 3:64-73

In the modular knapsack cryptosystem, many trapdoor sequences have been proposed. However, the various attacks against the conventional sequences have been proposed. In this paper, we first introduce three basic types of conventional trapdoor sequenc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a1999e7c54d3f35385753ce42ff9bf30
https://doi.org/10.4156/jcis.vol3.issue2.8

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