blaise's cipher

blaise's cipher

Points: 200

Category

Cryptography

Question

My buddy Blaise told me he learned about this cool cipher invented by a guy also named Blaise! Can you figure out what it says? Connect with nc 2018shell1.picoctf.com 46966.

Hint

There are tools that make this easy.

This cipher was NOT invented by Pascal

Solution

This is a Vigenère Cipher, this time without a key. Bruteforce using an online tool. Online tool: https://www.mygeocachingprofile.com/codebreaker.vigenerecipher.aspx

Flag

picoCTF{v1gn3r3_c1ph3rs_ar3n7_bad_cdf08bf0}