Bonus Question: $(20$ points$)$

Qwrn pn twr Ahkvgr hd wkjfn rzrntg$,$ pt mrahjrg nrarggfvo dhv hnr xrhxyr th upgghyzr twr xhyptpafy mfnug qwpaw wfzr ahnnratru twrj qptw fnhtwrv$,$ fnu th fggkjr fjhnb twr xhqrvg hd twr rfvtw$,$ twr grxfvftr fnu rlkfy gtftphn th qwpaw twr Yfqg hd Nftkvr fnu hd Nftkvr$\text{'}$g Bhu rntptyr twrj$,$ f urarnt vrgxrat th twr hxpnphng hd jfncpnu vrlkpvrg twft twro gwhkyu urayfvr twr afkgrg qwpaw pjxry twrj th twr grxfvftphn$.$

Qr whyu twrgr tvktwg th mr gryd$-$rzpurnt, twft fyy jrn fvr avrftru rlkfy$,$ twft twro fvr rnuhqru mo twrpv Avrfthv qptw arvtfpn knfyprnfmyr Vpbwtg$,$ twft fjhnb twrgr fvr Ypdr$,$ Ypmrvto fnu twr xkvgkpt hd Wfxxpnrgg$.--$Twft th grakvr twrgr vpbwtg$,$ Bhzrvnjrntg fvr pngtptktru fjhnb Jrn$,$ urvpzpnb twrpv skgt xhqrvg dvhj twr ahngrnt hd twr bhzrvnru, $-$Twft qwrnrzrv fno Dhvj hd Bhzrvnjrnt mrahjrg urgtvkatpzr hd twrgr rnug, pt pg twr Vpbwt hd twr Xrhxyr th fytrv hv th fmhypgw pt$,$ fnu th pngtptktr nrq Bhzrvnjrnt$,$ yfopnb ptg dhknuftphn hn gkaw xvpnapxyrg fnu hvbfnpipnb ptg xhqrvg pn gkaw dhvj$,$ fg th twrj gwfyy grrj jhgt ypcryo th rddrat twrpv Gfdrto fnu Wfxxpnrgg$.$ Xvkurnar, pnurru, qpyy upatftr twft Bhzrvnjrntg yhnb rgtfmypgwru gwhkyu nht mr awfnbru dhv ypbwt fnu tvfngprnt afkgrg; fnu faahvupnbyo fyy rexrvprnar wftw gwrqn$,$ twft jfncpnu fvr jhvr upgxhgru th gkddrv$,$ qwpyr rzpyg fvr gkddrvfmyr$,$ twfn th vpbwt twrjgryzrg mo fmhypgwpnb twr dhvjg th qwpaw twro fvr faakgthjru. Mkt qwrn f yhnb tvfpn hd fmkgrg fnu kgkvxftphng$,$ xkvgkpnb pnzfvpfmyo twr gfjr Hmsrat rzpnarg f urgpbn th vrukar twrj knurv fmghyktr Urgxhtpgj, pt pg twrpv vpbwt$,$ pt pg twrpv ukto, th twvhq hdd gkaw Bhzrvnjrnt$,$ fnu th xvhzpur nrq Bkfvug dhv twrpv dktkvr grakvpto.$--$Gkaw wfg mrrn twr xftprnt gkddrvfnar hd twrgr Ahyhnprg; fnu gkaw pg nhq twr nrarggpto qwpaw ahngtvfpng twrj th fytrv twrpv dhvjrv Gogtrjg hd Bhzrvnjrnt$.$ Twr wpgthvo hd twr xvrgrnt Cpnb hd Bvrft Mvptfpn pg f wpgthvo hd vrxrftru pnskvprg fnu kgkvxftphng$,$ fyy wfzpnb pn upvrat hmsrat twr rgtfmypgwjrnt hd fn fmghyktr Tovfnno hzrv twrgr Gtftrg$.$ Th xvhzr twpg$,$ yrt Dfatg mr gkmjpttru th $f$ afnupu qhvyu.

Please attack it and recover the encryption key:

$\backslash$table$[[a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z$