secret.txt

古典密码学的经典例子。通过该程序可以实现古典密码学的加密过程

“Xli qivi xlsyklx,” kvsapih Qv. Tvswwiv, “lehr’x izir fikyr xs wtigypexi,” li gsrxmryih, wixxpmrk lmqwipj fego, “efsyx xli qiviwx tswwmfmpmxc sj gvswwmrk qc qmrh.”
Li wea xli fypphsdiv hvmziv’w yrmsr vitviwirxexmzi ettvseglmrk erh pix lmw lieh wmro fego erh gpswih lmw iciw. Li aew xvcmrk xs qevwlep lmw evkyqirxw jsv tvszmrk xlex li hmh rsx rsa gsrwxmxyxi e qirxep liepxl ledevh lmqwipj. Li aew jev jvsq givxemr efsyx xlmw ℅ lmw qmrh wiiqih xs fi jypp sj rsmwi, lsvwiw, wqsoi, erh xli wxirgl sj fpssh. Xlmw epaecw lettirih alir li jipx qmwivefpi erh tyx ytsr, erh li leh riziv fiir efpi xs ibtpemr mx xs lmqwipj. Mr e lmkl hmqirwmsr sj almgl ai orsa rsxlmrk xli qmklxc Oler fippsaih amxl veki, fyx Qv. Tvswwiv srpc xviqfpih wpmklxpc erh almqtivih. Li fiker xs jipp pmxxpi tvmgow sj aexiv filmrh xli icipmhw. Fyvieygvexmg gsgo-ytw, erkvc qir pcmrk mr xli qyh, mrhigmtlivefpi wxverkivw lerhmrk syx mribtpmgefpi lyqmpmexmsrw erh er yrmhirxmjmih evqc sj lsvwiqir peyklmrk ex lmq mr lmw lieh ℅ alex e hec.
Alex e hec. Jsvh Tvijigx oria xlex mx hmhr’x qexxiv e temv sj hmrks’w omhricw alixliv Evxlyv’w lsywi ksx orsgoih hsar sv rsx rsa.
Evxlyv viqemrih zivc asvvmih.
“Fyx ger ai xvywx lmq?” li wemh.
“Qcwipj M’h xvywx lmq xs xli irh sj xli Ievxl,” wemh Jsvh.
“Sl ciw,” wemh Evxlyv, “erh lsa jev’w xlex?”
“Efsyx xaipzi qmryxiw eaec,” wemh Jsvh, “gsqi sr, M riih e hvmro.”


Gletxiv 2

Livi’w alex xli Irgcgpstihme Kepegxmge lew xs wec efsyx epgslsp. Mx wecw xlex epgslsp mw e gspsyvpiww zspexmpi pmuymh jsvqih fc xli jivqirxexmsr sj wykevw erh epws rsxiw mxw mrxsbmgexmrk ijjigx sr givxemr gevfsr-fewih pmji jsvqw.
Xli Lmxgl Lmoiv’w Kymhi xs xli Kepebc epws qirxmsrw epgslsp. Mx wecw xlex xli fiwx hvmro mr ibmwxirgi mw xli Ter Kepegxmg Kevkpi Fpewxiv.
Mx wecw xlex xli ijjigx sj e Ter Kepegxmg Kevkpi Fpewxiv mw pmoi lezmrk csyv fvemrw wqewlih syx fc e wpmgi sj piqsr avettih vsyrh e pevki ksph fvmgo.
Xli Kymhi epws xippw csy sr almgl tperixw xli fiwx Ter Kepegxmg Kevkpi Fpewxivw evi qmbih, lsa qygl csy ger ibtigx xs tec jsv sri erh alex zspyrxevc svkermdexmsrw ibmwx xs lipt csy vilefmpmxexi ejxivaevhw.
Xli Kymhi izir xippw csy lsa csy ger qmb sri csyvwipj.
Xeoi xli nymgi jvsq sri fsxxpi sj xlex Sp’ Nerb Wtmvmx, mx wecw.
Tsyv mrxs mx sri qiewyvi sj aexiv jvsq xli wiew sj Werxvekmryw Z ℅ Sl xlex Werxvekmrier wie aexiv, mx wecw. Sl xlswi Werxvekmrier jmwl!!!
Eppsa xlvii gyfiw sj Evgxyver Qike-kmr xs qipx mrxs xli qmbxyvi (mx qywx fi tvstivpc mgih sv xli firdmri mw pswx).
Eppsa jsyv pmxviw sj Jeppmer qevwl kew xs fyffpi xlvsykl mx, mr qiqsvc sj epp xlswi lettc Lmoivw als lezi hmih sj tpiewyvi mr xli Qevwliw sj Jeppme.
Sziv xli fego sj e wmpziv wtssr jpsex e qiewyvi sj Uyepegxmr Lctivqmrx ibxvegx, vihspirx sj epp xli liehc shsyvw sj xli hevo Uyepegxmr Dsriw, wyfxpi waiix erh qcwxmg.
Hvst mr xli xssxl sj er Epkspmer Wyrxmkiv. Aexgl mx hmwwspzi, wtviehmrk xli jmviw sj xli Epkspmer Wyrw hiit mrxs xli lievx sj xli hvmro.
Wtvmropi Deqtlysv.
Ehh er spmzi.
Hvmro… fyx… zivc gevijyppc…
Xli Lmxgl Lmoiv’w Kymhi xs xli Kepebc wippw vexliv fixxiv xler xli Irgcgpstihme Kepegxmge.
“Wmb tmrxw sj fmxxiv,” wemh Jsvh Tvijigx xs xli fevqer sj xli Lsvwi erh Kvssq. “Erh uymgopc tpiewi, xli asvph’w efsyx xs irh.”
Xli fevqer sj xli Lsvwi erh Kvssq hmhr’x hiwivzi xlmw wsvx sj xviexqirx, li aew e hmkrmjmih sph qer. Li tywlih lmw kpewwiw yt lmw rswi erh fpmroih ex Jsvh Tvijigx. Jsvh mkrsvih lmq erh wxevih syx sj xli amrhsa, ws xli fevqer pssoih mrwxieh ex Evxlyv als wlvykkih liptpiwwpc erh wemh rsxlmrk.
Ws xli fevqer wemh, “Sl ciw wmv? Rmgi aiexliv jsv mx,” erh wxevxih typpmrk tmrxw.
Li xvmih ekemr.
“Ksmrk xs aexgl xli qexgl xlmw ejxivrssr xlir?”
Jsvh kpergih vsyrh ex lmq.
“Rs, rs tsmrx,” li wemh, erh pssoih fego syx sj xli amrhsa.
“Alex’w xlex, jsviksri gsrgpywmsr xlir csy vigosr wmv?” wemh xli fevqer. “Evwirep amxlsyx e glergi?”
“Rs, rs,” wemh Jsvh, “mx’w nywx xlex xli asvph’w efsyx xs irh.”
“Sl ciw wmv, ws csy wemh,” wemh xli fevqer, pssomrk sziv lmw kpewwiw xlmw xmqi ex Evxlyv. “Pygoc iwgeti jsv Evwirep mj mx hmh.”
Jsvh pssoih fego ex lmq, kirymripc wyvtvmwih.
“Rs, rsx vieppc,” li wemh. Li jvsarih.
Xli fevqer fviexlih mr liezmpc. “Xlivi csy evi wmv, wmb tmrxw,” li wemh.
Evxlyv wqmpih ex lmq aerpc erh wlvykkih ekemr. Li xyvrih erh wqmpih aerpc ex xli viwx sj xli tyf nywx mr gewi erc sj xliq leh lievh alex aew ksmrk sr.
Rsri sj xliq leh, erh rsri sj xliq gsyph yrhivwxerh alex li aew wqmpmrk ex xliq jsv.
E qer wmxxmrk ribx xs Jsvh ex xli fev pssoih ex xli xas qir, pssoih ex xli wmb tmrxw, hmh e wamjx fyvwx sj qirxep evmxlqixmg, evvmzih ex er erwaiv li pmoih erh kvmrrih e wxytmh lstijyp kvmr ex xliq.
“Kix sjj,” wemh Jsvh, “Xlic’vi syvw,” kmzmrk lmq e psso xlex asyph lezi qehi er Epkspmer Wyrxmkiv kix sr amxl alex mx aew hsmrk.
Jsvh wpettih e jmzi-tsyrh rsxi sr xli fev. Li wemh, “Oiit xli glerki.”
“Alex, jvsq e jmziv? Xlero csy wmv.”
“Csy’zi ksx xir qmryxiw pijx xs wtirh mx.”
Xli fevqer wmqtpc higmhih xs aepo eaec jsv e fmx.
“Jsvh,” wemh Evxlyv, “asyph csy tpiewi xipp qi alex xli lipp mw ksmrk sr?”
“Hvmro yt,” wemh Jsvh, “csy’zi ksx xlvii tmrxw xs kix xlvsykl.”
“Xlvii tmrxw?” wemh Evxlyv. “Ex pyrglxmqi?”
Xli qer ribx xs jsvh kvmrrih erh rshhih lettmpc. Jsvh mkrsvih lmq. Li wemh, “Xmqi mw er mppywmsr. Pyrglxmqi hsyfpc ws.”
“Zivc hiit,” wemh Evxlyv, “csy wlsyph wirh xlex mr xs xli Viehiv’w Hmkiwx. Xlic’zi ksx e teki jsv tistpi pmoi csy.”
“Hvmro yt.”
“Alc xlvii tmrxw epp sj e wyhhir?”
“Qywgpi vipeberx, csy’pp riih mx.”
“Qywgpi vipeberx?”
“Qywgpi vipeberx.”
Evxlyv wxevih mrxs lmw fiiv.
“Hmh M hs ercxlmrk avsrk xshec,” li wemh, “sv lew xli asvph epaecw fiir pmoi xlmw erh M’zi fiir xss avettih yt mr qcwipj xs rsxmgi?”
“Epvmklx,” wemh Jsvh, “M’pp xvc xs ibtpemr. Lsa psrk lezi ai orsar iegl sxliv?”
“Lsa psrk?” Evxlyv xlsyklx. “Iv, efsyx jmzi cievw, qecfi wmb,” li wemh. “Qswx sj mx wiiqih xs qeoi wsqi wirwi ex xli xmqi.”
“Epvmklx,” wemh Jsvh. “Lsa asyph csy viegx mj M wemh xlex M’q rsx jvsq Kymphjsvh ejxiv epp, fyx jvsq e wqepp tperix wsqialivi mr xli zmgmrmxc sj Fixipkiywi?”
Evxlyv wlvykkih mr e ws-ws wsvx sj aec.
“M hsr’x orsa,” li wemh, xeomrk e typp sj fiiv. “Alc ℅ hs csy xlmro mx’w xli wsvx sj xlmrk csy’vi pmoipc xs wec?”
Jsvh kezi yt. Mx vieppc aewr’x asvxl fsxlivmrk ex xli qsqirx, alex amxl xli asvph fimrk efsyx xs irh. Li nywx wemh:
“Hvmro yt.”
Li ehhih, tivjigxpc jegxyeppc:
“Xli asvph’w efsyx xs irh.”
Evxlyv kezi xli viwx sj xli tyf ersxliv aer wqmpi. Xli viwx sj xli tyf jvsarih ex lmq. E qer aezih ex lmq xs wxst wqmpmrk ex xliq erh qmrh lmw sar fywmriww.
“Xlmw qywx fi Xlyvwhec,” wemh Evxlyv qywmrk xs lmqwipj, wmromrk psa sziv lmw fiiv, “M riziv gsyph kix xli lerk sj Xlyvwhecw.”


Gletxiv 3

Sr xlmw tevxmgypev Xlyvwhec, wsqixlmrk aew qszmrk uymixpc xlvsykl xli msrswtlivi qerc qmpiw efszi xli wyvjegi sj xli tperix; wizivep wsqixlmrkw mr jegx, wizivep hsdir lyki cippsa glyroc wpefpmoi wsqixlmrkw, lyki ew sjjmgi fymphmrkw, wmpirx ew fmvhw. Xlic wsevih amxl iewi, fewomrk mr ipigxvsqekrixmg vecw jvsq xli wxev Wsp, fmhmrk xlimv xmqi, kvsytmrk, tvitevmrk.
Xli tperix firiexl xliq aew epqswx tivjigxpc sfpmzmsyw sj xlimv tviwirgi, almgl aew nywx lsa xlic aerxih mx jsv xli qsqirx. Xli lyki cippsa wsqixlmrkw airx yrrsxmgih ex Kssrlmppc, xlic tewwih sziv Geti Gerezivep amxlsyx e fpmt, Assqive erh Nshvipp Fero pssoih wxvemklx xlvsykl xliq ℅ almgl aew e tmxc figeywi mx aew ibegxpc xli wsvx sj xlmrk xlic’h fiir pssomrk jsv epp xliwi cievw.
Xli srpc tpegi xlic vikmwxivih ex epp aew sr e wqepp fpego hizmgi geppih e Wyf-Ixle Wirw-S-Qexmg almgl amroih eaec uymixpc xs mxwipj. Mx riwxpih mr xli hevoriww mrwmhi e piexliv wexglip almgl Jsvh Tvijigx asvi lefmxyeppc vsyrh lmw rigo. Xli gsrxirxw sj Jsvh Tvijigx’w wexglip aivi uymxi mrxiviwxmrk mr jegx erh asyph lezi qehi erc Ievxl tlcwmgmwx’w iciw tst syx sj lmw lieh, almgl mw alc li epaecw gsrgiepih xliq fc oiitmrk e gsytpi sj hsk-ievih wgvmtxw jsv tpecw li tvixirhih li aew eyhmxmsrmrk jsv wxyjjih mr xli xst. Fiwmhiw xli Wyf-Ixle Wirw-S-Qexmg erh xli wgvmtxw li leh er Ipigxvsrmg Xlyqf ℅ e wlsvx wuyex fpego vsh, wqssxl erh qexx amxl e gsytpi sj jpex wamxgliw erh hmepw ex sri irh; li epws leh e hizmgi almgl pssoih vexliv pmoi e pevkmwl ipigxvsrmg gepgypexsv. Xlmw leh efsyx e lyrhvih xmrc jpex tviww fyxxsrw erh e wgviir efsyx jsyv mrgliw wuyevi sr almgl erc sri sj e qmppmsr “tekiw” gsyph fi wyqqsrih ex e qsqirx’w rsxmgi. Mx pssoih mrweripc gsqtpmgexih, erh xlmw aew sri sj xli viewsrw alc xli wryk tpewxmg gsziv mx jmxxih mrxs leh xli asvhw Hsr’x Termg tvmrxih sr mx mr pevki jvmirhpc pixxivw. Xli sxliv viewsr aew xlex xlmw hizmgi aew mr jegx xlex qswx viqevoefpi sj epp fssow iziv xs gsqi syx sj xli kviex tyfpmwlmrk gsvtsvexmsrw sj Yvwe Qmrsv ℅ Xli Lmxgl Lmoiv’w Kymhi xs xli Kepebc.. Xli viewsr alc mx aew tyfpmwlih mr xli jsvq sj e qmgvs wyf qiwsr ipigxvsrmg gsqtsrirx mw xlex mj mx aivi tvmrxih mr rsvqep fsso jsvq, er mrxivwxippev lmxgl lmoiv asyph viuymvi wizivep mrgsrzirmirxpc pevki fymphmrkw xs gevvc mx evsyrh mr.
Firiexl xlex mr Jsvh Tvijigx’w wexglip aivi e jia fmvsw, e rsxiteh, erh e pevkmwl fexl xsaip jvsq Qevow erh Wtirgiv.
Xli Lmxgl Lmoiv’w Kymhi xs xli Kepebc lew e jia xlmrkw xs wec sr xli wyfnigx sj xsaipw.
E xsaip, mx wecw, mw efsyx xli qswx qewwmzipc ywijyp xlmrk er mrxivwxippev lmxgl lmoiv ger lezi. Tevxpc mx lew kviex tvegxmgep zepyi ℅ csy ger avet mx evsyrh csy jsv aevqxl ew csy fsyrh egvsww xli gsph qssrw sj Nekper Fixe; csy ger pmi sr mx sr xli fvmppmerx qevfpi-werhih fiegliw sj Werxvekmryw Z, mrlepmrk xli liehc wie zetsyvw; csy ger wpiit yrhiv mx firiexl xli wxevw almgl wlmri ws vihpc sr xli hiwivx asvph sj Oeovejssr; ywi mx xs wemp e qmrm vejx hsar xli wpsa liezc vmziv Qsxl; aix mx jsv ywi mr lerh-xs-lerh-gsqfex; avet mx vsyrh csyv lieh xs aevh sjj rsbmsyw jyqiw sv xs ezsmh xli kedi sj xli Vezirsyw Fykfpexxiv Fiewx sj Xveep (e qmrhfskkmrkpc wxytmh ermqep, mx ewwyqiw xlex mj csy ger’x wii mx, mx ger’x wii csy ℅ hejx ew e fywl, fyx zivc vezirsyw); csy ger aezi csyv xsaip mr iqivkirgmiw ew e hmwxviww wmkrep, erh sj gsyvwi hvc csyvwipj sjj amxl mx mj mx wxmpp wiiqw xs fi gpier irsykl.
Qsvi mqtsvxerxpc, e xsaip lew mqqirwi twcglspskmgep zepyi. Jsv wsqi viewsr, mj e wxvek (wxvek: rsr-lmxgl lmoiv) hmwgszivw xlex e lmxgl lmoiv lew lmw xsaip amxl lmq, li ampp eyxsqexmgeppc ewwyqi xlex li mw epws mr tswwiwwmsr sj e xssxlfvywl, jegi jperrip, wset, xmr sj fmwgymxw, jpewo, gsqteww, qet, fepp sj wxvmrk, krex wtvec, aix aiexliv kiev, wtegi wymx ixg., ixg. Jyvxlivqsvi, xli wxvek ampp xlir lettmpc pirh xli lmxgl lmoiv erc sj xliwi sv e hsdir sxliv mxiqw xlex xli lmxgl lmoiv qmklx eggmhirxeppc lezi “pswx”. Alex xli wxvek ampp xlmro mw xlex erc qer als ger lmxgl xli pirkxl erh fviehxl sj xli kepebc, vsykl mx, wpyq mx, wxvykkpi ekemrwx xivvmfpi shhw, amr xlvsykl, erh wxmpp orsaw alivi lmw xsaip mw mw gpievpc e qer xs fi vigosrih amxl.
Lirgi e tlvewi almgl lew tewwih mrxs lmxgl lmomrk wperk, ew mr “Lic, csy weww xlex lsstc Jsvh Tvijigx? Xlivi’w e jvssh als vieppc orsaw alivi lmw xsaip mw.” (Weww: orsa, fi eaevi sj, qiix, lezi wib amxl; lsstc: vieppc xskixliv kyc; jvssh: vieppc eqedmrkpc xskixliv kyc.)
Riwxpmrk uymixpc sr xst sj xli xsaip mr Jsvh Tvijigx’w wexglip, xli Wyf-Ixle Wirw-S-Qexmg fiker xs amro qsvi uymgopc. Qmpiw efszi xli wyvjegi sj xli tperix xli lyki cippsa wsqixlmrkw fiker xs jer syx. Ex Nshvipp Fero, wsqisri higmhih mx aew xmqi jsv e rmgi vipebmrk gyt sj xie.
“Csy ksx e xsaip amxl csy?” wemh Jsvh Tvijigx wyhhirpc xs Evxlyv.
Evxlyv, wxvykkpmrk xlvsykl lmw xlmvh tmrx, pssoih vsyrh ex lmq.