Set 4: Polyalphabetic Cryptograms

Enci-1

Encipher the following text using the Vigenere cipher with

the keyword VIGENERE. (The text is taken almost verbatim

from page 29 of Beutelspacher.)

The first published successful attack on the Vigenere cipher

was undertaken in eighteen sixty-three by the Prussian colonel

Friederich Wilhelm Kasiski. A second method is due to his

American counterpart William Frederick Friedman.

Deci-1

Decipher the following cryptogram which was enciphered using

the Vigenere system with keyword KASISKI.

KLLPG EORTZ QKZSG EJNMV UOTZW VYNKN STQJQ XGHWD IIVPZ ITOBS

CUQHR MBSOI KPQBS LXMLT SSZMV LGUAK QKUQS TKPGE TNBWV GDMNT

ZILDP OEFOD SARMS BZOUK TAKAK VMHSZ DOALA TJSQM PAEWM CNYRZ

QKZQY NWMJS VQCGV UOXDI GVGPI POJMJ EVXEJ BGDPO MGLWB VMOEX

MDMBD ALWHB ONKQN OBROM OZEVZ UTTAC PODOW JUWXC JGHDW VOYGA

XXKRL QUETK RZMVO DSSWL LRMUA KQKUQ WELPG NQXEA OZDMO NXQXD

GPOMZ FSVOY WIJCJ OFGZW UICIK SACEY RCESC XEBDQ KRMN

Poly-1

OVLYK GZOBS ORZVP UYCQD TOMVZ FFVKB PVYHP QZVZX YOYGZ WXHYU

CHGHP UIWCF AADWG BNHYO YGGQP UZOTQ HWLVU TXLTR SDBSW HJAPW

UHLNK WYWKF PVZWY VAQSU OROOK GLQJW EPGMH HRZMH JCFEZ SOZNS

EKKFS XSOYL TUPQA WEBIO YFUBD WXINW GBPQO UXDUT EKKYT QJKSL

IVSXS OYLTU PQAWE BSOJQ UHMBV FZSKF LSVZT FGHTR TFPVU ZGH

Poly-2

XMYME ALOIN BGSIF ZSKYC FVHVB UFKWF OFKPV MKKEP CFALV UMAYD

HGMXY YQLEI QZLRK BWJPF OVZLL HYVTG LWZWZ PWSCC IOPRK BWOIR

PWUWZ BSKFV YFWEJ MAUKR FGUIF HZVVJ YTHGB NZYSL AZHWZ HYBPR

LDFHI YSYCK LSJXF ZUVYE NJFEE XSAPV HYALW IMUHD SKLPW UKALV

MZHHV MGMXY YWCIE CFNHI YOVRN CLOME PALAF ZLOID YDHRT BGSCY

IMZIF ZMZLV L

Poly-3

PNIOJ HKGWV AUZRJ ACXZR MNQFE VIZKY LHUGK YIXZV KZAFK OCZHY

LAACU SSOWK FIRSU PHMHY LWABW BMUCE HHPPL ZNXSZ UNTSJ ALQSK

ZQQFV AYDFZ IFQAV UQQFV AUXYZ UAICD LHISI LMOFV HGUBX JBUZU

YYZKV YYOVF RCZUG PAEKV YYIVZ ZNXWE NWMFK ZNTSP YUFHC LXNIC

SMFVV FVQZC VQQRT VQEHY LSXCN LXTCI ZYEHY LSZSZ NBQRT HNEHY

LSOOK LLIOL SYPRF NMFVV FXMBT LXPOE JYPQF BFPWK ABQBS LJAGJ

PVXSU HHOSU HFMGK OIGUY ACYMU HHOWE NXMMJ HLQCM LL

Poly-4: Extra Credit

CVCCD DTRTL MSATD MUFRE GEIYL AHCTG MJIPJ SBYHD JRBRX PBQVD

VKRFT LWAJM HVRLT IXRCT JZIZW IWBZA YWCCG WSYSL MSYUW VHDVD

JVATG MMYJZ GTTZL PBYWY FVLZE CKLUV FTJTG MDQZT GAYTT LTZXM

ECOPL HKCCL MBRUA MKAAX PWRUW GBQUV UAQNJ GNIHD VVDVZ EJBPU

MUCZA HUCCY VSYSW MJJHV DVLZE ELQTG GEIXV FBRCT JZIZW GEQRP

FYALW CUFVT AHQRU HKHJV WKENN STBTG MBYHX PCAHU HUKPX EUIFV

HUCPU ELBWV NKAQD VWXZ

Poly-5: Extra Credit

SSLAW LNWMQ NCHSG ARYHC MAXPK CYIIO HMXOM LUXMZ JDTPY AXPHX

LAXRL QRAQD POIVP GZPFI MHPCA AXVOP YHRXH SHMOR GSPPR OHXWW

COLCI AJQZP TNXCZ WUDMA CSLJM CGPYA XPHHB IIDCS LLYGL AIKTG

UTXKQ GPCNX XQZWU OMVHX WLUOH TCVVA LOULV VVHBI URLVU SJDWP

TLWHO SYVXG UGPII GUTJI JCPCA KURYP TAQCV IAPBK HONZB DLGJW

TDYDZ AQDNS MIRUK KMPMV ZWUTX HNPPL AWUXH PMEPH UM

Poly-6: Extra credit

OTMNQ YSOAO WOCWT UAGSC WUSXP RFBXQ LAEYS PBIOV YBSLA AEYWF

BXPHE VOTMW AYSUT IOOYW UCBIX MWJMF OAAWU NMGLW NPYUI BVETQ

IJMDC VHIVX VEUFM VFYDO TRNEP SDRYH KTDRU WKSOW FDUGL LOITI

OOYWU LKATT BSJKH MKJKP RVHUS SYYWL TDJDQ QRLEV GRAEF LOPRM

CAUAY XEVAK NOBAH EQMBM GSTFW LOLLL VFHPL QPOOT XPMJE ASQJM

EKZOU WCLHK ZIJEA DKLWK FEKNQ RVAFD IQRBH UBDMO QBZFK BRWXF

YHQCL LLQLU CLEFL ZCNHM DJNOO LSFJN OOLOR KNQMV BJZDO NGLTZ

KHXGS VHFBU LRLEU CKCBT IKQWG OCWJD YIBLH KRRHR LKVRB HLAJN

DQLNM TSUKC FLHFP MAHAB KPIJA FLUDY MSOOH ZYOSY POBIW QWOUL

OEUFQ FSMCE AUNGI ONYIL OOUBW TKDDL BEJFD BHXTQ FHLAT YJJLF

IYYOM TXYBJ JVHA