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關于舉辦翁健教授學術報告的通知

發布時間:2018年10月29日 10時38分31秒  瀏覽次數:

各部門、各單位:

應我校無線網絡安全技術國家工程實驗室邀請,暨南大學翁健教授將于1030日來我校做信息安全主題學術報告,歡迎廣大師生參加!具體安排如下:

報告時間:20181030日(星期二)16:3018:00

報告地點:通信與信息工程學院大樓106

報告題目:代理重加密研究

要:we study (the direct constructions of) bidirectional proxyre-encryption (PRE) with alleviated trust in the proxy, say the master secretsecurity (MSS) and the non-transitivity (NT) security, in the standard model,and achieve the following:

A multi-hopMSS-secure bidirectional PRE scheme with security against chosen plaintextattacks (CPA) in the standard model, which is based upon the decisionalbilinear Diffie-Hellman (DBDH) and discrete logarithm (DL) assumptions. Theproposed scheme enjoys the property of constant size of ciphertext, regardlesshow many times it has been re-encrypted. To the best of our knowledge, thereexists previously no MSS-secure multi-hop bidirectional PRE scheme withconstant size of ciphertexts (whether in the random oracle model or not).

A single-hop MSS-secure andnon-transitive bidirectional PRE scheme with security against chosen ciphertextattacks (CCA) in the standard model. In comparison with the only known (directconstruction of) bidirectional PRE scheme in the standard model [Canetti andHohenberger, CCS 2007], besides the added MSS security and NT security, ourscheme is also essentially more efficient and has shorter ciphertexts.

The security analysisuses Corons technique [Coron, Crypto 2000], which particularly allows adaptivesecret-key corruption. Along the way, we also refine and clarify the securitymodels for bidirectional PRE (including CCA security, MSS security and NTsecurity). Our PRE constructions are novel: the CPA-secure scheme is new; theCCA-secure scheme is based on the CPA-secure scheme and particularly employs anew re-encryption key (REK) generation mechanism (similar to Diffie-Hellmankey-exchange but w.r.t. a different generator) to which each user makes equalcontributions, so that the proxy needs not to distinguish the transform directionwhen it re-encrypts ciphertexts.

報告人簡介:翁健,暨南大學信息科學技術學院/網絡空間安全學院教授、執行院長。博士畢業于上海交通大學。在CRYPTOEUROCRYPTASIACRYPTTCCPKCCT-RSAIEEETPAMIIEEE TDSC等國際會議和國際期刊上發表了80多篇論文。主持了包括國家重點研發計劃課題、國家自然科學項目(杰青、重點、面上和青年項目)、教育部霍英東基金項目等10多項項目。擔任NSFC信息學部會評專家、廣東省第六屆學位委員會工學II組學科評議組成員、暨南大學第十一屆學位評定委員會委員兼工學分委會主席、信息安全國際會議SecureComm 2016大會主席、ISPEC 2011程序委員會主席和RFIDsec'13 Asia程序委員會主席,以及40多次國際會議程序委員會委員。曾入選教育部新世紀優秀人才支持計劃、廣東省“千百十工程”國家級培養對象、廣東省珠江學者特聘教授等。曾獲中國密碼學會首屆密碼創新獎、2017年度全國網絡安全優秀教師等獎勵。

特此通知。

 

                                          科研處

                   通信與信息工程學院

                                          20181029

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