CA認證中心的研究與應用.pdf

1、武漢理工大學碩士學位論文CA認證中心的研究與應用姓名：王世賢申請學位級別：碩士專業(yè)：計算機應用技術指導教師：章社生吳業(yè)福2003.3.1武漢理工大舉碩士學位論文AbstractWiththedevelopmentoftheInternet，E—Commercehasgoneintoourliving。AlthoughE—CommercegivesUSmuchconvenience，itbringsUStroublesomeproblem

2、swhichtraditionalcommercehasnot。InauthoritativeentityCallexpose，modifymessagetransferedbyInternetTheentityinE—CommerceCaBrepudiatehiscommercialbehaviorThecombinationusageofasymmetricandsymmetricalgorithmcaninsuretheinteg

3、rity，confidentiality，non—repudiationofmessagewhichareneedinECommerceDigitalcertificateisalleffectualmeasureCA(Certificateauthority)，asthetrustedthirdpart，ischargedwithentityauthenticationinECommerceCAaffirmstheentityiden

4、tity，thenbindstheentity’Spublickeyandtheidentitytogetherbysigningintheentity’Scertificate。ThecertificateisallidentifierofentityinECommerceWhentheentityuseshiscertificate，CAmaintainsthebinding。Thispaperstudiestheauthentic

5、ationprincipleandthemethodofimplementingtheCAInchapterl，thepaperintroducesthestateofECommerce，therecentstudystateofPKI，andthebackgroundofthisprojectInchapter2，cryptographyisintroduced，includingasymmetricalgorithm，symmetr

6、icalgorithmandothercryptographyconceptInchapter3，thepaperintroducestheconceptofcertificateandPKIInchapter4，thepaperstatestheprocessofCAmanagementforsecretkeyandcertificate，andcorrespondingtechnology。Inchapter5，thepaperdi

7、scussestheentrustmodelofCAAtlast，inchapter6，thepaperintroducestheimplementprocessofasimpleCAsystemInthesystem，theusageofsecurityEDImessagetransmissionisconsideredKeyword：CertificateAuthorityasymmetricencryptdigitalcertif