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Secret sharing based on hyperplane geometry with its application in cryptographic protocols

發(fā)布時(shí)間:2019-06-04 瀏覽:

地點(diǎn):長(zhǎng)安校區(qū) 文津樓三段6628報(bào)告廳

主辦單位:計(jì)算機(jī)科學(xué)學(xué)院 網(wǎng)絡(luò)信息安全團(tuán)隊(duì)

報(bào)告時(shí)間201966日(星期四) 8:30-10:00

報(bào)告人:夏喆 教授

報(bào)告內(nèi)容簡(jiǎn)介:

In this talk, we revisit the secret sharing based on hyperplane geometry introduced by Blakley, and introduce its potentials that were not known by the crypto research community before. First, we show how it can be used to design threshold Paillier encryption so that the interpolation over Z_{\phi(n)} problem can be completely avoided. Second, we show that it has computational advantages over the secret sharing based on polynomial interpolation in (n, n) threshold secret sharing, and this attractive feature has many applications in designing cryptographic protocols, e.g. proactive secret sharing and attribute-based encryptions.

報(bào)告人簡(jiǎn)介:

夏喆,男,19827月出生,博士、武漢理工大學(xué)副教授、碩士生導(dǎo)師。2009年獲得英國薩里大學(xué)博士學(xué)位,2009年至2013年在英國薩里大學(xué)從事博士后研究,2017年至2018年在澳大利亞伍倫貢大學(xué)進(jìn)行訪問學(xué)習(xí),主要研究方向?yàn)槊艽a學(xué)和信息安全。近年來在TIFS、DCC、IET Information SecurityACISP等國際期刊會(huì)議上發(fā)表學(xué)術(shù)論文40余篇,曾擔(dān)任澳大利亞學(xué)術(shù)委員會(huì)(ARC)信息安全方向評(píng)審及ESORICS, EVT, Vote-ID等國際學(xué)術(shù)會(huì)議程序委員會(huì)委員。目前擔(dān)任中國計(jì)算機(jī)學(xué)會(huì)推薦國際期刊《Journal of Information Security and Application》的副主編(Associate Editor),以及多個(gè)信息安全??木幬?。