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How to decipher

Puzzling Asked by user58284 on April 22, 2021

I received the following challenge as a homework problem. Not much info is provided with it, except for the word Decrypt! at the end.

This problem is online on a password protected school site. So I cannot post the link. (No-one without an account would be able access it.)

This is for a course based on cryptography/network security

enter image description here

A hint I received said that I should look into the html code. Which is pasted below. I noticed the “nbsp;” tag repeats quite often, and exactly 57 times, which is also the name of this challenge in the URL code ie.. www.website.com/challenge/#57.html

So based on the hint to look into the html and the #57 in the url I believe it is possible this &nbsp tags are what to focus on.

Any help or clues on how to solve this would be appreciated.

enter image description here

One Answer

Replacing simple spaces with 0 and non-breaking spaces with 1, we obtain:

Splitting it 8 digit by 8 and converting binary to UTF-8, we obtain a 15-character phrase:

You can also convert using on-line automatic tools like this one.

Correct answer by horcrux on April 22, 2021

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