I was solving a Crypto Challenge in a CTF, and I got a Nihilist Cipher Encoded String. Luckily the additive key was given as a hint, and for the polybius Square key, I kinda bruteforced or I just got lucky somehow and found the word with which the polybius square was made able to decrypt the cipher text.
But what if only the Cipher text is given in a challenge, or what if I was not able to guess the right polybius Square key?
How should I approach the Nihilist Cipher to crack the Cipher text?
The Challenge cipher text for the reference:
42 24 44 30 28 70 110 66 43 34 48 26 90 100 63 55 64