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Showing posts from 2010

Experiencing Cryptographic Puzzle

I am a beginner in software testing. I had extreme curiosity about software testing. Now I am enjoying my work as a software tester.
Our team lead gave us a link of a puzzle

I am going to share my experience about it. In the first puzzle there were 46 characters with spaces. I calculate the frequency of both encoded and decoded message. Then I was looking at the hint to find out the key. I was looking at the triangle shape, after trying sometime I look over the hints. Then I concentrate the frequencies of the letter. I found that in the original message – “THE QUICK BROWN FOX JUMPED OVER THE LAZY DOG”, ‘S’ is missing and in the encoded message ‘Z’ is missing. This gave the clue and I assume ‘S’ as ‘Z’. Then I re-format the code with my idea – Offset= Position of ‘Z’ – Position of ‘S’. I found nothing interesting. Then I concentrate on finding two ‘THE’s. It was not caught by my eyes yet. Then I started writing the words with my formula…