Once again, two more Renaissance ciphers yield to Mr Gaffney…

By now I’m sure you’re all thoroughly sick of the way I heap superlatives and laurel wreaths onto Tony Gaffney’s hair-bestrewn head every time he cracks yet another of Bellaso’s ciphers… and now he’s broken two more, lifting his tally for the 1564 set of challenge ciphers to 6 out of 7. Though Tony dearly wants to make it 7/7, Bellaso’s remaining 1564 cipher appears to be an awkward one, a real Holmesian three-pipe problem… so let’s keep our fingers crossed Tony can make it a clean sweep. 🙂

Anyway, as compared to #7’s tortuous digrams, #3 turned out to be relatively easy: it involved five rotating reciprocal alphabets (Bellaso’s favourite starting point), with the confounding trick being that the first letter of each group is basically random, and indicates which one of the five rotated alphabets to use (by using the index of the letter within the cipher alphabet). There are asterisks marked at the two places (in lines 1 and 3) where this fails to quite work, but the basic idea seems completely solid.

1564 #3

 lasumita  demonti  secnserva  perche  lacque  otneve
CNRDEPSGT XEQRLLGP FDUHLLQMXX AMCABAA HPEEOHU MIDLDHU
 45123451  5123451  123451234  345123  234512 *234512

 chesopra  deesi  spesocadono  insi  contengono  leesalationi
REFQFLQAT NSUAIB GFMCLGTEHQFI TNLLP EBIJFDFNLLQ OPACLTPEFBGGN
 45123451  12345  23451234512  3451  1234512345  234512345123

 etvageri  terestri  asesi  nelaria  oxvirtu  solare  etcosi
FQCXXUQMN RFDLUGFAP SRDUGS BLDRHQSR PMCHOQFP QDIOXAQ LCGBIGS
 12345123  45123451  51234  4512345 *4512345  123451  451234

 latgu  cheper  lepiogie  scorgzoso  demonti  xepiogie  etnevi
CNRANX DXUUMCA MSQLNMTPU AGEQLNZLIQ FSUPMMAO RADIOLBBQ SDAGARB
 45123  512345  51234512  345123451  1234512  45123451  512345

 larepone sopra  detimonti
HPEUDIIICXLGLQX QSUDSNGGDS.
 23451234 51234  123451234

QFEN QUACDFGILM 1
     EHTBSNOPRX
UGHO QUACDFGILM 2
     XEHTBSNOPR
AITP QUACDFGILM 3
     RXEHTBSNOP
CLBR QUACDFGILM 4
     PRXEHTBSNO
DMSX QUACDFGILM 5
     OPRXEHTBSN

The (possibly meaningless?) keyword here is “QUA(C)EHTBS”, yielding a cleartext like this:-

La sumita de monti se conserva perche l’acque ot neve
che sopra de esi speso cadono in si contengono le esalationi
et vageri terestri asesi ne l’aria ox virtu solare et cosi
la tgu che per le piogie scorgzoso de monti xe piogie et nevi
la repone sopra deti monti.

And so we move onto Bellaso’s 1564 challenge cipher #4, which is also a bit of a pussycat (yes, it has five rotating reciprocal alphabets) – the secondary trick here is the autokey, wherein the last plaintext letter of each group indicates which of the five alphabets to start the next group with.

1564 #4

etper ilcontrario simarre conserva lasua profocsita
NCUTA REXEECSUAUB NUEFPAN FAGRTAIX HOUPU QHBADFMRDU
12345 12345123451 5123451 51234512 51234 5123451234

etgrandeza perche fluctrbu viena sotiliare larena etparte
MDLAOGTTZR FLPFRM PEAFBIXA IRLIR NACQGMOIL HOILIR OBFFPGN
23451234-5 234512 23451234 12345 512345123 512345 5123451

teree chein esosono liqualli cosi sotiliati etcon lacqua
CLPON XLNRH OFBRDSA DQSBODEN FAUQ NACQGMOCQ OBTCI DFXPIX
23451 45123 5123451 23451234 5123 123451234 51234 234512

mescolati sono salavirtu solarein aria levati etdali venti
INUODHOCQ FBHD MXEUBUIDA FBEUANRH OIQU ETBOCQ OBLFGM SLIGU
512345123 1234 123451234 12345123 1234 345123 512345 23451

indiverse plrti portati ethnacqua conversi restano
MELQAOHUL QCIDN FCPGOCQ MDMSOTIAR TCIBNIRN ANUDUSA
512345123 51234 2345123 234512345 23451234 5123451

distributi sulimonti etin altrilochi
OMFCSNUICQ FSENIAGDN NCQI XEEAUDCXLU.
4512345123 123451234 1234 2345123451

SDFM  SPABCDEGHI   1
      FXOTLMNQRU
PEXN  SPABCDEGHI   2
      UFXOTLMNQR
AGOQ  SPABCDEGHI   3
      RUFXOTLMNQ
BHTR  SPABCDEGHI   4
      QRUFXOTLMN
CILU  SPABCDEGHI   5
      NQRUFXOTLM

The (once again, somewhat mysterious) keyword here is “SPAFXOT”:-

et per il contrario si marre conserva la sua profocsita (profundita)
et grandeza perche fluctrbu vien a sotiliare la rena et parte
teree che in eso sono li qualli cosi sotiliati et con l’acqua
mescolati sono sala virtu solare in aria levati et da li venti
in diverse plrti (parti) portati et hn acqua conversi restano
distributi su li monti et in altri lochi.

Observant cryptologers will be pleased to note that Tony managed to crack both of these even though neither contained the word proportione. 🙂

Praise aside, all that I can say now is “Go, Tony, Go!” – good luck with the final cipher in the set!