CAJ | 학술논문

不经意传输协议是密码学的基础工具，利用双线对设计不经意传输协议不仅可以扩展双线性对的应用范围，而且可以增加不经意传输的设计方法。因此，采用双线性对设计k-out-of-n的不经意传输协议。该协议能够保护接收者和发送者的隐私，同时抵抗冒名攻击、重放攻击以及中间人攻击，可用于不安全信道，协议在完成一次信息传输中仅需要发送方和接收方参与，不受其他方的干预，执行效率较高。
불경의전수협의시밀마학적기출공구，이용쌍선대설계불경의전수협의불부가이확전쌍선성대적응용범위，이차가이증가불경의전수적설계방법。인차，채용쌍선성대설계k-out-of-n적불경의전수협의。해협의능구보호접수자화발송자적은사，동시저항모명공격、중방공격이급중간인공격，가용우불안전신도，협의재완성일차신식전수중부수요발송방화접수방삼여，불수기타방적간예，집행효솔교고。
Oblivious Transfer(OT) protocol is an important primitive for designing cryptographic protocols. Designing OT protocol from bilinear pairing not only extends the bilinear pairing application but also increases the design technique of OT, which has important practical significance. This paper utilizes bilinear pairing to design a k-out-of-n OT protocol. The new protocol can protect both receiver’s privacy and sender’s privacy. The new protocol also can resist impersonation attacks, replay attacks and man-in-the-middle attacks. It can be used in an insecure channel, and the protocol has high efficiency.