## Description

Can you decrypt this message?
Decrypt this [message](https://artifacts.picoctf.net/c/531/cipher.txt) using this key "CYLAB".

## Solution

As suggested by the challenge name, this is a vigenere cipher we need to decrypt. We can use an [online tool](https://www.dcode.fr/vigenere-cipher) to decrypt, either by inputting the key "CYLAB", or inputting picoCTF as a known plaintext.

## Flag

*picoCTF{D0NT_US3_V1G3N3R3_C1PH3R_c481du5f}*

Original writeup (https://github.com/FlyN-Nick/picoGymWriteups/blob/main/Cryptography/Vigenere/Vigenere.md).