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[The Problem of the Week] Secret Message

This week we have to decipher a message.

This is the message has been sent to Mario Hugo. For anyone to know what it says, has moved encryption using an alphabet, that is, each letter has been replaced by shifting the alphabet a certain number of places. This has created a cryptogram: WHPJR ND FRPWUDVHQD IRU HP HN RUGHPDGRU HPWUDU MXDP GH.

The problem is that Hugo has forgotten to give Mario a number indicating the places you've moved the letters of the alphabet. Are you able to decipher the message?

What? What if we have the solution? Do you still dare to doubt? Look for it below.

[In this picture we see one of the pages of the Voynich manuscript enigmatic, mysterious book, written and drawn by hand by an unknown author about 500 years ago, in language totally incomprehensible in an unknown alphabet. The book is also full of illustrations that seem inexplicable to refer to scientific knowledge impossible for the time when it was written. Due to the inability to decipher the text, some have believed that the Voynich manuscript is an elaborate hoax. However, the language used in it is the law of Zipf to satisfy all natural languages: the length of the words is inversely proportional to the frequency of occurrence of the same . This indicates that the Voynich , the indecipherable language used in the manuscript, it is not artificial and invented a language as Tolkien Elvish or Klingon of Star Trek, but is based on natural language. It is impossible that 500 years ago the author of the manuscript known Zipf's law, discovered in the twentieth century, and consider, deliberately inventing a language that could be enforced.]

Solution:

Just to take a piece of paper and write on it the English alphabet: ABCDEFGHIJKLMN Ñ WXYZ (twenty points), and then return to write down the alphabet, and do a shift of letters: if, for example, the shift is three places A we may unite with a line with the D, B with E, C to F, etc..

We can also construct paper or cardboard a couple of albums in the picture:

One of the records must contain the alphabet from outside, and the other from within, the United in center with a pin so they can rotate independently, so easy to change each letter by another displaced. In the picture there is a shift of seven letters. Note that the alphabet of the image is a twenty-six alphabet letters Ñ missing.

have to try different movements until they begin to leave meaningful words. In our case, the letters have been displaced precisely three letters. Thus, to decipher the text, replace each letter that is three places ahead: W by T, H by E, P and N, etc.

Once done, we get the following message: I HAVE THE PASSWORD TO ENTER THE COMPUTER JUAN.

Notes: To learn more about encrypted messages, I recommend reading my two posts on this blog: encrypted messages (1) and encrypted messages (2): URODINELAS key.

The problem this week is from the textbook publisher SM.