## YubitSec CTF - A Fine Cipher - Warmup
### Problem

a:9
b:13

Encrypted:
VLWHCTXF{N\_GHAX_FHSYXK}

### Solution

The problem description was a hint that the message is encrypted using the [Affine Cipher](https://en.wikipedia.org/wiki/Affine_cipher).

Using an online [tool](http://rumkin.com/tools/cipher/affine.php) to decrypt the message returns the flag.

FLAG: __YUBITSEC{A_FINE_CIPHER}__

Original writeup (https://gospelofmark.ch/yubitsec-ctf-a-fine-cipher-warmup.html).