in this thesis, we focus on fair exchange protocols and their applications in electronic contract . the primary research is summarized as follows : characteristic and applicable scope of automatic execution protocol, arbitration protocol and arbitrament protocol are summarized 本文主要研究電子商務(wù)中的公平交換協(xié)議及其在電子合同簽署方面的應(yīng)用,具體的研究?jī)?nèi)容包括如下幾個(gè)方面:總結(jié)自動(dòng)執(zhí)行協(xié)議、仲裁協(xié)議和裁決協(xié)議的特點(diǎn)和適用范圍。