picoCTF 2014: Caesar (Cryptography) Write-up

Solve:

You find an encrypted message written on the documents. Can you decrypt it? encrypted.txt

encrypted.txt:

wkhvhfuhwsdvvskudvhlvsqfrayntyqvjpoxeqbmmtlptiktbkf

Hint:

Is there a cipher named the same as the title of this problem?

Solution:
          When I read a hint, I googling to find web tools to Caesar decode online, and I found http://planetcalc.com/1434/.

Input: wkhvhfuhwsdvvskudvhlvsqfrayntyqvjpoxeqbmmtlptiktbkf and click "Calculate".

ROT0 - ROT25
ROT23: thesecretpassphraseispncoxvkqvnsgmlubnyjjqimqfhqyhc <== Interests!!

Flag: pncoxvkqvnsgmlubnyjjqimqfhqyhc