PicoCTF2018 Cryptography blaise's cipher Objective: 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 2018shell.picoctf.com 46966. Solution: So a google search of blaise cipher brought up links to a Vigenere cipher created by Blaise Vigenere. It looks like this is more advanced Cesar cipher with a variable rotation based on a key word This site is a decoder for these ciphers https://www.dcode.fr/vigenere-cipher here is the output of connecting via nc Encrypted message: Yse lncsz bplr-izcarpnzjo dkxnroueius zf g uzlefwpnfmeznn cousex bls ltcmaqltki my Rjzn Hfetoxea Gqmexyt axtfnj 1467 fyd axpd g rptgq nivmpr jndc zt dwoynh hjewkjy cousex fwpnfmezx. Llhjcto'x dyyypm uswy ybttimpd gqahggpty fqtkw debjcar bzrjx, lnj xhizhsey bprk nydohltki my cwttosr tnj wezypr uk ehk hzrxjdpusoitl llvmlbky tn zmp cousexypxz. Qltkw, tn 1508, Ptsatsps Zwttnjxiax, tn nnd wuwv Puqtgxfahof
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