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.
著者
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OKAMOTO Takeshi
Department of Neurosurgery, Japanese Red Cross Nagoya Daiichi Hospital
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Okamoto Eiji
Graduate School Of Systems And Information Engineering University Of Tsukuba
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SATO Chifumi
SBI Net Systems Co., Ltd.
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