Engineering your own voynich

[nablator]

I had luck decoding your cipher with a hill-climbing algorithm to try and find an X length(52 seemed to work for yours) key that produce the shortest text and most successful coverage of the text first and then moving on to decrypting.

You are not allowed to view links. Register or Login to view.

This is one example of the keys generated, I purposely forced the keys to be at least 2 characters long, so that the scoring was only based on the most efficient longer substitutions.

Congratulations! I'm surprised that it worked at all: all codes are between 0 and 3 characters long, a few of them being shared between different positions, standing for different plaintext letters. I could have used the zero-length codes for a frequent letter like 'e' instead of space and shared a lot more codes between different positions to make it more difficult to solve with a general-purpose cipher/code solver program.

Solution:

You are not allowed to view links. Register or Login to view.

the voynich manuscript is an illustrated codex handwritten in an otherwise unknown writing system referred to as voynichese the vellum on which it is written has been carbon dated to the early fifteenth century and stylistic analysis indicates it may have been composed in italy during the italian renaissance the origins authorship and purpose of the manuscript are debated various hypotheses have been suggested including that it is an otherwise unrecorded script for a natural language or constructed language an unread code cypher or other form of cryptography or simply a meaningless hoax

Key:

You are not allowed to view links. Register or Login to view.

   1    2    3
_  a       
a  bu   aae  al
b  d    aee  ar
c  fi   aei  b
d  fv   ai   ben
e  ga   aii  ean
f  hi   ame  g
g  k    ami  iea
h  ki   ao   inn
i  li   aoo  ioa
j  m    c    k
k  n    ee   len
l  nu   eg   n
m  qa   ei   no
n  qe   el   nuy
o  qi   emi  oan
p  qo   ema  ol
q  s    eu   or
r  ta   fit  ouy
s  te   ii   pen
t  tii  m    q
u  tu   o    f
v  u    oo   t
w  yep  par  unh
x  yi   x    v
y  yii  yo   yun