CAJ | 학술논문

不经意传输协议是安全多方计算中的基础协议，在保护用户隐私方面有着非常重要的应用。已有的不经意传输协议缺少统计分析能力。对此，引入多方安全求和及同态加密技术，并借助一种巧妙的编码方法，提出了一种具有统计特性的不经意传输协议。在保证协议原有正确性与安全性的基础上，增加了发送者的统计特性。即在一个执行周期后发送者能够统计出各个秘密消息发送出的总次数。理论分析表明该协议安全有效，在电子商务，医疗卫生等领域有着很好的应用前景。
불경의전수협의시안전다방계산중적기출협의，재보호용호은사방면유착비상중요적응용。이유적불경의전수협의결소통계분석능력。대차，인입다방안전구화급동태가밀기술，병차조일충교묘적편마방법，제출료일충구유통계특성적불경의전수협의。재보증협의원유정학성여안전성적기출상，증가료발송자적통계특성。즉재일개집행주기후발송자능구통계출각개비밀소식발송출적총차수。이론분석표명해협의안전유효，재전자상무，의료위생등영역유착흔호적응용전경。
Oblivious Transfer (OT) protocol is a fundamental building block for Secure Multiparty Computation and finds critically important applications in protecting privacy in various settings .Nevertheless ,existing OT protocols do not include the pro-cedure to conduct the statistical analysis in a cooperative environment .Here ,a new OT protocol is proposed with a cooperative sta-tistical analysis by pursuing secure multiparty computation of the sum ,adopting the homomorphic encryption scheme ,and using a clever coding method .Specifically ,the sender can calculate the total number of each message sent privately within a given period . Theoretical analysis indicates that the new protocol allows for secure and efficient transfer of private messages in an oblivious way and shows great promise for practical applications in Electronic Commerce ,Healthcare Management and other secure systems as well .