Any thoughts on zodiac’s ability on ciphers after the solve from you guys or anyone ?

Hello everyone! Thanks for the great work, first of all!

Is it possible to have the list of replacements?

Cipher to text and text to cipher?

Thanks again and congratulations!

Thanks!
Here is the key showing the replacements:

Any thoughts on zodiac’s ability on ciphers after the solve from you guys or anyone ?

It certainly shows that he was capable of producing a complicated cipher that worked. At least, mostly worked. He made a lot of mistakes in both the 408 and 340. Slightly more mistakes in the 340 could have permanently prevented discovery of the solution.
The real question is where did he get the idea. These kinds of transpositions could have simply been invented by him, but it’s possible he learned them somewhere.

Hello everyone! Thanks for the great work, first of all!

Is it possible to have the list of replacements?

Cipher to text and text to cipher?

Thanks again and congratulations!

Thanks!
Here is the key showing the replacements:

Thank you very much! Amazing piece of work! Congratulations!

Congratulations to all involved. What a feeling for you guys. Enjoy every moment. Thanks for your hard work.

Uau!!
Estou tão feliz que estou escrevendo em português.
Parabéns David, Jarvl e demais.
Acompanhei seus trabalhos por anos e se havia gente capaz de quebrar o código esses seriam vocês!!
Parabéns:)

BREAKING NEWS

Last weekend, the 340 was solved and submitted to the FBI.
They have confirmed the solution.

Hi Dave,

Good work with the of the bulk power of modern computer software power and human intervention.

My question is how could the FBI confirm the solution so quickly when your solution takes several leap
Of faiths, much more than one can with the 408 solution.

Another thing. Can such massive brute force computer power we have today along with your powerful AZD
Computer program create….. a false positive solution?

Creating a (false positive) solution for the 408 would be much more difficult because of its simplicity as you
have tried in the past.

I’d like to know how the FBI responded to the solution, I’m guessing they offered congratulations.

I suppose the story will break in the US news soon, have any journalists been tipped off?

Amazing! I’m speachless. Well done to you all.

Another question, if I may: why is there an "S" after "lot"?

Is it a misspell? Thanks again!

Uau!!
Estou tão feliz que estou escrevendo em português.
Parabéns David, Jarvl e demais.
Acompanhei seus trabalhos por anos e se havia gente capaz de quebrar o código esses seriam vocês!!
Parabéns:)

Muito obrigado!!!

My question is how could the FBI confirm the solution so quickly when your solution takes several leap
Of faiths, much more than one can with the 408 solution.

That’s a very good question. It’s kind of hard to answer. But the answer partly lies in how few liberties are taken in the decryption process.
There is a very systematic method for the reading direction in the first two parts. The fact that the substitution key produces
such a coherent message for the 1st and 3rd parts is evidence of the message being real. In order words, we haven’t added
so many steps to the process that we are inadvertently "adding information" to the process. For example, when people do things
like anagrams, they are "adding information" to the decryption process.

It also fits with what cryptographers know to be true about transposition ciphers. Namely, that many different transposition systems
exist and a lot of them involve manipulating plaintexts into different shapes and then re-writing them. In Z340 Zodiac
combined two different known encipherment systems: homophonic substitution and a type of transposition that probably involves
putting the message in a rectangle and cutting it into triangles.

Another thing. Can such massive brute force computer power we have today along with your powerful AZD
Computer program create….. a false positive solution?

Creating a (false positive) solution for the 408 would be much more difficult because of its simplicity as you
have tried in the past.

Yes, it is possible, but it depends on a lot of factors, such as how many unique symbols there are compared to the cipher length,
and what encipherment systems are under consideration. For example, if a running key cipher is being considered, the key itself
could be very long, say 170 characters long. If so, it would be very easy to produce false positive solutions.

Any thoughts on zodiac’s ability on ciphers after the solve from you guys or anyone ?

It certainly shows that he was capable of producing a complicated cipher that worked. At least, mostly worked. He made a lot of mistakes in both the 408 and 340. Slightly more mistakes in the 340 could have permanently prevented discovery of the solution.
The real question is where did he get the idea. These kinds of transpositions could have simply been invented by him, but it’s possible he learned them somewhere.

This is very interesting. If so, the FBI can definitely be of help – is it a technique that is taught in some navy course, for example?

I’d like to know how the FBI responded to the solution, I’m guessing they offered congratulations.
I suppose the story will break in the US news soon, have any journalists been tipped off?

Some FBI reactions are mentioned in this article: http://zodiackillerfacts.com/news-and-u … en-solved/

The SF Chronicle has been informed. I have no idea who’s gonna report on it first. All they have to do is call the FBI and get them to confirm.

hi
Sorry if the questions are silly:
1-Did you observe the symbols in the other codes, I mean z13 and z32, if yes, is there anything in them?
2-As there are 6 symbols left out of the 340, is it possible to have a name, or even fit "zodiac" at the end?

Marcelo