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Solving the 405

PostPosted: Tue May 05, 2015 2:13 am
by jroberson
Made like The Zodiac would have.

Took a few hours with no more knowledge of ciphers than that learned from the 408.

GEDC0302b.jpg


GEDC0301b.jpg


GEDC0300b.jpg

Re: Solving the 405

PostPosted: Tue May 05, 2015 2:17 am
by UKSpycatcher
Can you elucidate

Re: Solving the 405

PostPosted: Tue May 05, 2015 2:20 am
by jroberson
This is a cipher made very similarly to the 408.

What's the point, you ask?

Well, I have no cryptographical training and yet was able to create a cipher similar to that of the Zodiac's, in a few hours, using no more knowledge than that learned from The Zodiac's own handiwork.

Re: Solving the 405

PostPosted: Tue May 05, 2015 2:26 am
by UKSpycatcher
There is a hidden message you would like solved!

Re: Solving the 405

PostPosted: Tue May 05, 2015 2:31 am
by jroberson
No, I already have the solution, and zkdecrypto could crack the above cipher in seconds.

Re: Solving the 405

PostPosted: Tue May 05, 2015 2:42 am
by Jarlve
Thank you for this cipher jroberson. Do you have a text version? It looks very, very nice!

Re: Solving the 405

PostPosted: Tue May 05, 2015 5:24 am
by glurk
I'm with Jarlve, I'd like to run this through ZKD just for fun, but there AIN'T NO WAY, lol - that I am going to go through transcribing it into ASCII or numbers to do it. It's fun to do these, but not that fun.

-glurk

Re: Solving the 405

PostPosted: Tue May 05, 2015 7:26 am
by jroberson
Jarlve wrote:Thank you for this cipher jroberson. Do you have a text version? It looks very, very nice!



Thank you, Jarlve.

So what do you mean a "text version"? As in an ASCII/Unicode text file analogue? No, but I could make one, which might be a great deal more fun.

Pretty much the entire thing was made non-digitally using ruled notebook paper, pencil, white art paper, ruler, and a Blue-ish Sharpie.

Some of the letters are not aligned as properly as I wanted but...it was a major pain in the back side to make in the few hours I donated to the project. I had to start over probably three or four times...





I think the point I was trying to make is that....if I could construct this in a few hours with absolutely ZERO cryptographical training or experience, The Zodiac could have done so as well, which imo pretty much destroys the long-held notion this guy had military codebreaking training.

Re: Solving the 405

PostPosted: Tue May 05, 2015 9:02 am
by Jarlve
jroberson wrote:So what do you mean a "text version"? As in an ASCII/Unicode text file analogue? No, but I could make one, which might be a great deal more fun.


Yes. ASCII text file version of your 405 if possible. And if you want to make more go ahead! I have a cipher challenge thread if you are interested to enter a cipher: viewtopic.php?f=81&t=2133

jroberson wrote:I think the point I was trying to make is that....if I could construct this in a few hours with absolutely ZERO cryptographical training or experience, The Zodiac could have done so as well, which imo pretty much destroys the long-held notion this guy had military codebreaking training.


Ofcourse, but there are some things to consider. The ciphers were made in the late 60's. And perhaps the 408 exhibits some properties that hint military training. Your pen and paper cipher is interesting in this regard. I'm eager to compare it to the Zodiac ciphers.

A question on my mind here, to what extent are the irregularities in the 408 intentional?

Re: Solving the 405

PostPosted: Tue May 05, 2015 11:15 am
by _pi
Nice cipher penmanship :D

Here is a first attempt at a textual version:

Code: Select all
T[jaIfd+@rg=Dhj
2moK0Vs.uJ*v;w*
AEGbX>^GH5Uk(:?
<Tu_tF!#jx»i~R]
7-z{}pNg$3lM9fS
*@I-«Z2»|ks/J>4
Tq?PAsWH61yt,G$
mQ\a¨!iB=d09+vr
{ezUWd%6[w&\L#h

J>Ri5-yXp{m\¬:_
3Zs0v8!<jw4g^`j
(GM1OCTxQ’#-17n
,};fW9@/[a&2jm¨
{|E0CuvrX=V!KDh
cZJ~l,.53)|?_os
w-y$41]bé^Fe(*x
’RCUSyq/:\<&8èz
`?¬7W#«6/¨-O}Q>

au=é0vUF.W!:Iwd
E^zG*(d-«Xx<R#Z
4A)7u/9k1ay=’{H
l}YfJ.I:t~&\DQ¨
@r8<V3X]1S*m`ic
Oe0B6p%v5NM|Ph#
Z>w*^do«4(/9xI+
7bga1[è}Gq’KLfT
=d.Ak&!@uUFHtBz


Please counter-verify, this is a rough draft. I count 99 different symbols; that's a lot for a cipher this size...

_pi