26
Feb
2012

CODEGATE 2012 – Misc-1

The first Misc challenge was worth 100 points, so as expected it’s no rocket science. We’re given an encrypted message:

Az hrb eix mcc gyam mcxgixec rokaxioaqh hrb mrqpck gyam lbamgarx oatygqh Erxtoigbqigarx Gidc hrbg gasc gr koaxd erzzcc zro i jyaqc Kr hrb ocqh rx Ockubqq ro Yrg man? Gyc ixmjco am dccqihrbgm

Turns out this is a simple substitution cipher; by analyzing the ciphertext’s character frequency distribution and some guesswork, we manage to obtain the plaintext:
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