Sender Authenticated Key Agreements without Random Oracles

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概要

• 論文の詳細を見る

• The purpose of this paper is to study sender authenticated key agreements by a third party, which uses the received parameters to verify the fact that a sender of a message knows his long-term private key. In particular, we propose a standard model for the protocol among three entities for the first time. The security of this protocol depends on the difficulty of solving two new problems related to one-way isomorphisms and the decision co-bilinear Diffie-Hellman problem on multiplicative cyclic groups. It is the first time that the security of a key agreement has been formally proven by using negligible probability. We believe that our contribution gives many applications in the cryptographic community.

• （社）電子情報通信学会の論文
• 2009-08-01

著者

• OKAMOTO Takeshi

  Department of Neurosurgery, Japanese Red Cross Nagoya Daiichi Hospital

• Okamoto Eiji

  Graduate School Of Systems And Information Engineering University Of Tsukuba

• SATO Chifumi

  SBI Net Systems Co., Ltd.

• Sato Chifumi

  Sbi Net Systems Co. Ltd.

• Okamoto Takeshi

  Department Of Materials Science And Engineering Graduate School Of Engineering Nagoya University

• Okamoto Takeshi

  Department Of Computer Science Faculty Of Health Sciences Tsukuba University Of Technology

• Okamoto Takeshi

  Department Of Cardiovascular Surgery Niigata City General Hospital

• Okamoto Eiji

  Graduate School Of Systems And Information Engineering Univ. Of Tsukuba

• OKAMOTO Eiji

  Graduate School of Systems and Information Engineering, University of Tsukuba

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