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Lovecraft calling (Posted on 2011-04-30) Difficulty: 5 of 5
PHYCD PNKZZ IADUU NUTZS FAFAT VUXPN SLLKS CSSZK SABRZ SJSTS ZBHXH LEOMD LQXLN YOYGH GEYOX CUZOH UVFSE FQJMM AGNKF UHDYH GCKJC ERMLS IEPRL LKRDV AEYHJ YXTNR QEKIY LMRCC EUZZH LBLJZ SLLSN NNEIY YVNZY RLLOV AJRSC PPUHW HHVUL NHLYE EFITP NEFJA RVXLK ETRCG KJCPG RWSRK ESEUF IUYJK TNJGQ NZOYZ YVY

Hints: polyalphabetic, no autokey.

  Submitted by broll    
No Rating
Solution: (Hide)
Google 'Lovecraft call'; it will take you to somewhere like here:
http://en.wikipedia.org/wiki/The_Call_of_Cthulhu.

Using a resource like http://sharkysoft.com/misc/vigenere/ with the key: cthulhu produces:

NORIS ITIGS OPWAS UNZOL LYMTZ KNDNU LRADY AZLFZ LGZYS YYLZQ GUNMA RCVFJ AJDJU RUNZN ELRUM VAXVA AKYYC MJPBF GEUDL JAJWO ZIZCI CYFRH BKNYE RZKJT HXEWC EVAGX FXQGF ESGVI CBSFW EHJQS YAEYL UGKXR ETUSE GERMC TPGLI NWNNL ANTBE TWEEC LYOII TCMCG GODJR XZGVM IQVVV KCQYD KHXAD PNEYD ZLQZW CSUWG RBN

So we could be on the right track, but need a longer key. Try the story itself: http://www.hplovecraft.com/writings/texts/fiction/cc.asp

Using find on this produces 'Cthulhucult' as the first hit, and 'Cthulhufhtagn' as the second. The latter produces:

NORIS ITFGS IUQSB GAISY AHYAN ISEIT HER FZ VSMMI ZTHGS YEZMS TOFEA RTHS Y SJXFA WVRMW ZKTVQ COMMO NBULK AXCMG NEUDL JAJTO ZCEWA LKSAL OZWKL FXPKO GTRNE FQTHE OLDON ESMJV EOMXO EHACF NSESH ALLBE NOT UF KLFBT HCXHV VKBAW BUTBE TWEEZ LYINC LLYPP KBSSD ENEAN DPRIM MDLRE RQLNL XNEER MNDTO USUNS EQF.

This suggests that we are on the right track, but that the key is longer still. The fourth hit in the story produces:

“Ph’nglui mglw’nafh Cthulhu R’lyeh wgah’nagl fhtagn” but phngluimglwnafhcthulhurlyehwgahnaglfhtagn does not produce as much as we had before:

AALWS VFYTO MNDPN LBMFH YGOPV RNBJN LYLEH XLZZE FLUET HPKHM OFUXC ECVFJ AJDUC AKRKB GXLOR RPSVH OIQLR ZFPEA UVRXF PABFA MRDPL TTIEW CEIEL FZMWC AYLSC LRITJ EYZML LHKAJ XAOSN UQNFS WFLLA NHTDR FVHMJ KYFDB SXLHG CPPAU OABJE TQAAA XJCTI AEZYV KCXFX PMEWV QBQJV VJSMD CZXAU BAHYM PGNAQ GMOSO TOF.

So we dock phngluimglwnafh, and try cthulhurlyehwgahnaglfhtagn:

NORIS ITTOB ETHOU GHTTH ATMAN ISEIT HERTH EOLDE STORT HELAS TOFEA RTHSM ASTER SORTH ATTHE COMMO NBULK OFLIF EANDS UBSTA NCEWA LKSAL ONETH EOLDO NESWE RETHE OLDON ESARE ANDTH EOLDO NESSH ALLBE NOTIN THESP ACESW EKNOW BUTBE TWEEN THEMT HEYWA LKSER ENEAN DPRIM ALUND IMENS IONED ANDTO USUNS EEN

and the cypher is broken.

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Comments: ( You must be logged in to post comments.)
  Subject Author Date
Hints/Tipsre: Hints neededbroll2011-05-14 17:43:57
Hints neededGamer2011-05-14 04:18:17
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