![Oblivioustransfer
RobertSicoie
robert.sicoie[at]gmail.com](https://image.slidesharecdn.com/oblivioustransfer-1232228369373791-3/85/Oblivious-Transfer-1-320.jpg)
Oblivious Transfer
- 2. Cuprins Introducere 檎温恢庄稼油或恢鉛庄厩庄看顎壊油意姻温稼壊韓艶姻 1足2油或恢鉛庄厩庄看顎壊油意姻温稼壊韓艶姻 1足稼油或恢鉛庄厩庄看顎壊油意姻温稼壊韓艶姻 一足稼油或恢鉛庄厩庄看顎壊油意姻温稼壊韓艶姻
- 3. Introducere Protocolprincareunemi釘tortrimitenite informa釘iireceptorului,daremi釘torulnure釘inece informa釘ieaprimitreceptorul.
- 4. 檎温恢庄稼油或恢鉛庄厩庄看顎壊油意姻温稼壊韓艶姻 Emi釘torulgenereazunmodulpublicRSAN=pq undepiqsuntnumereprimemariiunexponente primcu(p足1)(q足1) Emi釘torulcripteazmesajulm:memodN
- 5. 檎温恢庄稼油或恢鉛庄厩庄看顎壊油意姻温稼壊韓艶姻 EtrimiteN,eimemodNctreR RalegealeatorunnumrxmoduloNitrimitex2 modNctreE Egseteordcinptratyaluix2modNpecare otrimitectreR Dacy=xmodNsauy=足xmodNatunciRnuva puteadecriptamesajulm.Probabilitate1/2 AltfelRvaputeadecriptamesajul.Probabilitate1/2
- 6. 檎温恢庄稼油或恢鉛庄厩庄看顎壊油意姻温稼壊韓艶姻 b b OT E R # ProbabilitateacaRsprimeascmesajulbestede 50%.Oricum,EnuvatidacRaprimitsaunu mesajul.
- 7. 1足2油或恢鉛庄厩庄看顎壊油意姻温稼壊韓艶姻 Earedoumesajem0im1iarRareunbitb,iarR vreasprimeascmbfrcaEsre釘inb EvreasseasigurecRvaprimidoarunuldin mesaje. Protocolulestegeneral,darpoatefiimplementat folosindcriptareaRSA
- 8. 1足2油或恢鉛庄厩庄看顎壊油意姻温稼壊韓艶姻 Etrimiteoperecheordonatdebi釘i(bo,b1)ctre mainaOT RtrimitectremainaOTunbiti,indic但ndcemesaj doretesprimeasc MainatrimitebictreRidistrugemesajulb1足i EtiecRaprimitdoarunuldinmesaje,darnutie caredinele. b0 i E OT R b1 bi
- 9. 1足稼油或恢鉛庄厩庄看顎壊油意姻温稼壊韓艶姻 Ogeneralizareaprotocolului1足2OT EtrimitectremainaOTnmesaje Rtrimiteunindiceiidoretesprimeascali足lea mesajfrcaEsre釘incaremesajafostcerut. Edoretecaunsingurmesajdincelensajungla R
- 10. 一足稼油或恢鉛庄厩庄看顎壊油意姻温稼壊韓艶姻 Protocolul1足nOTafostmaiapoigeneralizatla no釘iuneadek足nOT Rvaprimitunsetdekmesajedintrecelen Celekmesajepotfiprimtesimultan,saupotfi ceruteconsecuiv,fiecarecererebaz但ndu足sepe mesajulanteriorprimit.
- 11. 粥沿鉛庄界温釘庄庄 SecureMulti足partycomputation
- 12. 檎艶韓艶姻庄稼釘艶 BennyPinkas,ObliviousTransfer, http://www.pinkas.net/ot.html Wikipedia, http://en.wikipedia.org/wiki/Oblivious_transfer RafailOstrovsky,FoundationsofCryptography, Lecture10 B.Pinkas,M.Naor,EfficientObliviousTransfer
- 13. 皆韓但姻庄岳 Vmul釘umescpentruaten釘ie ntrebri?