DecipherCipher Hub / The Fourth Key

Cipher Challenge

The Fourth Key

A short fictional narrative about a caretaker who inherits three labeled keys and one key with no recorded purpose.

FictionPatristocratGeneral simple substitution

Source & status

Origin
Original to Decipher
Solution
Established

Ciphertext

MVACJ CAHKA OZUAO ZDASZ WADIE SVAIQ POJFJ OVZQQ YVADA OAJFA PSVDA AQZKA QAPWA XYEID SVAPI IDYKI JQADD IIUZC PYSID ZNAOZ NAYZE ILDSV WAXMZ YYUZQ QADPZ DWMJS VZNAZ CPZKY ACSED IUSVA JCFAC SIDXY VASDJ APCID ZCPIU QIOWY JCYSA ZPYVA OIUTZ DAPJS YYVZT AMJSV IQPUZ JCSAC ZCOAT VISIN DZTVY ICATJ OSLDA YVIMA PZCZD DIMOZ KJCAS KAYJP ASVAD IIEYS ZJDYD ACIFZ SJICY VZPOI FADAP SVAOZ KJCAS MJSVT ZCAQJ CNKLS ZEZJC SILSQ JCADA UZJCA PJCAH ZYWAP TADUJ YYJIC KAEID ADAUI FJCNS VAKIZ DPYZC PEILC PSVAQ IOWJC SZOSJ CYJPA MADAV ZCPTZ JCSAP YJNCY TDIND ZUYZC PZOOI LCSKI IWYED IUCAJ NVKID VIIPO ICOAD SYVAQ PPLDJ CNSVA KLJQP JCNYE JDYSP AOZPA CISVJ CNMZY FZQLZ KQAKX JSYAQ EXASS INASV ADSVA JSAUY AGTQZ JCAPC ZUAYO ZDFAP JCSIS VAKZO WYSZN AMZQQ SVAZD OVJFA DAOAJ FAPTD ITADK IGAYZ CPZOZ SZQIN LAJCA HZPPA PSVAY UZQQW AXSIS VAJCF ACSID XMJSV SVAQI CNAYS QZKAQ IEZQQ

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The Flag is the first 64 letters of the recovered Solution, or all of them when there are fewer. Case, spacing, and punctuation do not matter.