報(bào)告題目：隱私集合運(yùn)算統(tǒng)一框架的構(gòu)造與實(shí)現(xiàn)
報(bào)告人：陳宇教授
工作單位：山東大學(xué)
時(shí)間：2024年12月20日（星期五）15:00
地點(diǎn)：太陽(yáng)集團(tuán)tyc5997翡翠科教樓A座一樓第五會(huì)議室
報(bào)告簡(jiǎn)介：
Private set operations allow two parties to perform secure computation on their private sets, including intersection, union and functions of intersection/union. In this paper, we put forth a framework to perform private set operations. The technical core of our framework is the multi-query reverse private membership test (mqRPMT) protocol.We present two constructions of mqRPMT from newly introduced cryptographic notions, one is based on commutative weak pseudorandom function (cwPRF), and the other is based on permuted oblivious pseudorandom function (pOPRF). Both cwPRF and pOPRF can be realized from the decisional Di?ie-Hellman (DDH)-like assumptions in the random oracle model.
We demonstrate the practicality of our framework with implementations. By plugging our cwPRF-based mqRPMT into the framework, we obtain various PSO protocols that are superior or competitive to the state-of-the-art protocols.
報(bào)告人簡(jiǎn)介：
陳宇，山東大學(xué)網(wǎng)絡(luò)空間安全學(xué)院教授,博士生導(dǎo)師。本科畢業(yè)于太陽(yáng)集團(tuán)tyc5997信息安全專業(yè)，博士畢業(yè)于北京大學(xué)。主要研究方向是密碼學(xué)的理論與應(yīng)用，近年聚焦零知識(shí)證明與專用多方安全計(jì)算協(xié)議。以第一或通訊作者在密碼與安全領(lǐng)域的國(guó)際頂級(jí)會(huì)議CRYPTO、ASIACRYPT、PKC、ACM CCS、USENIX Security等和頂級(jí)期刊Journal of Cryptology等上發(fā)表論文多篇,主持承擔(dān)國(guó)家自然科學(xué)基金多項(xiàng),獲2018中國(guó)密碼學(xué)會(huì)密碼創(chuàng)新獎(jiǎng)二等獎(jiǎng)，蟬聯(lián)2020、2022央行金融密碼杯創(chuàng)新賽最高獎(jiǎng)，2022入選《麻省理工科技評(píng)論》中國(guó)隱私計(jì)算十大科技創(chuàng)新人物。
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