| Presentation | 2013-07-19 A Note on a Construction of Gateway Threshold Password-based Authenticated Key Exchange Yukou KOBAYASHI, Naoto YANAI, Takashi NISHIDE, Eiji OKAMOTO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Password-based authenticated key exchange (PAKE) allowing users to utilize passwords as secret information is suitable for cloud services which are available anywhere. Meanwhile, European Network and Information Security Agency (ENISA) has pointed out an existence of a malicious provider as the most serious threat. This threat for PAKE corresponds to the existences of malicious servers, and gateway threshold password-based authenticated (GTPAKE) by Abdalla et al. is recognizable as an approach against such a problem: in particular, revealing a password against the servers can be overcome by encrypting the password in a threshold encryption scheme. However, as an actual scenario against the provider, there are more malicious actions, e.g., manipulations of shares stored in the servers. Hence, only concealing the password is insufficient. In this paper, we consider the security required in which a malicious provider exists, and propose a GTPAKE under the definition. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Password-based authenticated key exchange (PAKE) / Gateway threshold password-based authenticated key exchange (GTPAKE) / Distributed key generation (DKG) / Set Password-based Chosen-basis Computational Diffie-Hellman (SPCCDH) assumption / Password-based Chosen-basis Decisional Diffie-Hellman (PCDDH) assumption |
| Paper # | ISEC2013-35,SITE2013-30,ICSS2013-40,EMM2013-37 |
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| Conference Information | |
| Committee | SITE |
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| Conference Date | 2013/7/11(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Social Implications of Technology and Information Ethics (SITE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Note on a Construction of Gateway Threshold Password-based Authenticated Key Exchange |
| Sub Title (in English) | |
| Keyword(1) | Password-based authenticated key exchange (PAKE) |
| Keyword(2) | Gateway threshold password-based authenticated key exchange (GTPAKE) |
| Keyword(3) | Distributed key generation (DKG) |
| Keyword(4) | Set Password-based Chosen-basis Computational Diffie-Hellman (SPCCDH) assumption |
| Keyword(5) | Password-based Chosen-basis Decisional Diffie-Hellman (PCDDH) assumption |
| 1st Author's Name | Yukou KOBAYASHI |
| 1st Author's Affiliation | University of Tsukuba() |
| 2nd Author's Name | Naoto YANAI |
| 2nd Author's Affiliation | University of Tsukuba |
| 3rd Author's Name | Takashi NISHIDE |
| 3rd Author's Affiliation | University of Tsukuba |
| 4th Author's Name | Eiji OKAMOTO |
| 4th Author's Affiliation | University of Tsukuba |
| Date | 2013-07-19 |
| Paper # | ISEC2013-35,SITE2013-30,ICSS2013-40,EMM2013-37 |
| Volume (vol) | vol.113 |
| Number (no) | 136 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |