Question: Perform cryptoanalysis of the ciphertext given below. Determine what cipher was used. Determine the keyword and decrypt the ( a mod 52 + 1) -th

  1. Perform cryptoanalysis of the ciphertext given below. Determine what cipher was used. Determine the keyword and decrypt the (a mod 52 + 1)-th line of the ciphertext (going from top to bottom) if successful.

Letter Relative frequency in the English language

A

8.167%

B

1.492%

C

2.782%

D

4.253%

E

12.702%

F

2.228%

G

2.015%

H

6.094%

i

6.966%

j

0.153%

k

0.772%

l

4.025%

m

2.406%

n

6.749%

o

7.507%

p

1.929%

q

0.095%

r

5.987%

s

6.327%

t

9.056%

u

2.758%

v

0.978%

w

2.360%

x

0.150%

y

1.974%

z

0.074%

ODNBGPADHOSIDALBGFNVMKXUKGTGDXSXHUUKDSSIDAKOLBHOZADSO

TOHOSTAIFQSHPOIHKDBGAFOOVCABTHPTPIFRBOAIXDXOCMTXOIDZIDHT

HKOXGHDISIFQSHPHKPTOAVUAOKOLIKASMDAOTOHKRFKTPIETHTQPGG

KHOHKQODQIFAOKGATTQIUOPIFPSAPISIFXGKMIPPWSIGQXOLMDVOCDM

OYQFOKSMHUIZUGXNTGOLGQKNINKHTPQFIVDHMHDNOCOAOTSXHOKAS

BKAOSQBATIDDQIERHPGDAOXAOKOAGNVKFOCWPIUTHSIXTHKZAPGBAF

OMQFUFAIUOCAGNVKQTMTQGPTNGESTATIVNVNVKFROIUXCPHSPLBGEW

RZGOFFGSIDASIIKOMDQIEMHUGIXUFATGFWTHTGFWTOAPHQLOXKGKFX

CPXMSIUTNOHMHXKXPAOGEIZPISWTMWBIEHNTUTWQFEKXSHUIZIZFGIL SPTPNDKOUFSPPGPSIUAOOSTDYAXOZHHOFUGPBZWTNEKATMILWPOXAO

KOVOOFGFVOIUZISTIETKHVGQXOLOHPTXOCAFIMSGXTKGRAOAISIXPAO

CGPTPXOIOMHXOCTZUTKSPLISIKUIKQKIPIFNRFKUFRXIEHNHTHPPHOSOD

OQLAHDATQBODNBKOAFSHIZSIDADLVXFOOVIWHOHEUFSIDAPXSUTKSPA

TKFDIGPXNETHOSIHPHZTGAODXOYVDTHSXXZIXTQGTOAKOLBTUSPXOIT

LCKASTUGIVZHKASBKNNKOCEGGEZXOQEFTPIFBDKOZHSMSIXOMETIKOQ FOWPITGVOSIHOHRWUKVHPIXUFXNPWOLHKATIVOSXTAOYNFUFKTPUAH

PIXUFTGPHOKWPWDFOOADQKTVDIXQHVOKFMHLAGPONHKATIVNVMLH

OCTHTIVZHZCCQGPOTXPZXSPDOMNHKATGESHKNIPIFKGXOTNGFCHIXMH

IUPGGQKDHKHOSIHZWPPGOSTNIQTWZISIGUOAIFPGYOIUUFTNGEOCXPPS

ODKFOSGPQSHTFKEFKOFUGPCQOIFGWTKGSTGEOCOKOWPMIPQHMTSIFES

QTMZAZHSIHPUWHOHRLIOWLCZFWTTHOSINXPXOCTLIIVOGOFHPWTFHK

OGKMTFEKRMTADOSXINTATEVKHKRMKZFZDOAEDHKQHXDIPIFMWGOQS

MDKFNKGFAHTPHKZHXOIDKHPVVOQFMWIUSOWKZGSPTOMVOAFNOAQO

GPIPWPOKOMDVILKMHTINQPGOHTSDXOZILCSIIZWTMPIUOFAOHPLISIGKK

NHKQDIPKATBHTPSHPXHKNHPGQKNOKIVFOWPIKHQWZTPXOZHUGWTHP

PSHDPKMCCLKTOVEWIKLQNDXPPTDNKRWTIZAGSISIKUGPFORXIEHNKAQ

GMTFGDAIFSTDNLSZKPGZCHZUVPHSIFZZGOFFUIZXOBAGPHKTAVITWOIU

GIXUFTPFOMNXZISMDIPIXOLEVQLMTOXPAPGTPFOMKHVGFSTIFWGKAOS

DVOCEXOWKHHVILSPXNUWGKVKAOQKEFIOPQKFOSDFTXATWPITMTTPK

UZWADHFKHTMXPXPIKGEQOXOEWHTIFTHOSIFUFQBTHHIATIQIFPXSUQKZ

QTGOWTGQFSIHTHTZGDXXPGPVKGPTNIQIFHUHNXOHFLIOWOLHOCTIMTI

XNUWFGDOKFIAGSKAHISIFETMXMTPWZDMSMKHXCTXOCSIFETMXMHOD

NKRIPHKZHIXUFDIOGSAPIIAIFGTIVFOWPIUOCIXUFWDIODXPIZTTWDSHDH

PLISIKZSXBSZUVKKARNKOFZHNXOHFSTTPXOIOOCHDPIIOOSIFDNWPATE

QWZOFDNTEOHKOPGHZPIZCDQIFIFWTPTXOBOHOCTLIKGOSPWIPIFCFUWI

PTGIZZWSASIFEPGHVILSPXNUWGZHUHKDXTPHOSIKUDAPISMLIXOKARA

MTOSTWIOAOKOIVZHZCFLDOKVPGLIBSIZOASIFZIXUFQSKTNTIZKOQFSIFK

HKIOMHLINKPGNKKHCQPSETUKITIQIFKVPGLIQSLIOACBXGHDISTOOCXZI

KWPUKKTKFATILNVMKARIFGTIVNQFKIUZISTIEQPIFCFUWGPHPMTPIIAKIC

NMTADAOKOTQKFDIHOIRIUQGVKQFILSWPGTPMTIZDNLHOIHKZHSIFZLO

MAKOQFSIGPVKHPLIWIHKGPDAOTOKHQFKHQHUKPGPTPIFCFUWHKLAHT

OTOXOCXGHKSIGPFEXSLAHTOTOSIFUKKTKFUKTGXNSIGKKOFZHNXOHFS

TIXUFLQIZGQKNSIFESGEHNXIUPTHOSIIPGKQKIKILWPDHAFOFDUAOKOUG

OWCLMAPGTPMTIPIXSAPIKRKFATSIIUSHEFOSPSAPNXSIGKIUPXPGLISIGPH

PATTWAOKOOFHPHOSIHUHUPIOSATXGHDGXIUSUQKCQNDODQYVOZKRN

MTHKMDKFSIXOKGPGNKKHADQBQSLIOAIXSUTEKHXCQNEFXSTAHOSIGK

GPKUNTPHXCTHKOLINKKHDFQOEFTHOSIFLDLIXDIEFUGKHKAOOSIFSITG NVMKHYPGDAFAHUFGILSPSIIKDVOCNKTWNQAOKWOVAOKOLIAMPMOK

MKMHGPKWTPZGILWMTAPIOHOSIFOWZDIXPHLIFUXOHPZHOSQSLIOATPIF

PHIDPMIDCQAGNVMYGUMTSIVOOQIFBDNTPATHIQIFDQIUHNXPSIDAKASP

PWIZHPAOLCHTOKSAATZGOGOHTPGPIZXKATZWSAATOGOHTPGPATKAST

FKUFTXOCATKAQGFKM

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