Welcome, Agent!
You've intercepted a secret message encoded using a shift cipher related to the digits of pi. Your mission, should you choose to accept it, is to decode this message and unveil the truth hidden within.
Part 1
Implement an algorithm that deciphers it using the pi key. The key consists of the first 16 digits of Pi, and shifting must always be to the left.
Wii kxtszof ova fsegyrpm d lnsrjkujvq roj! Kdaxii svw vnwhj pvugho buynkx tn vwh-gsvw ruzqia. Mrq'x kxtmjw bx fhlhlujw cjoq! Hmg tyhfa gx dwd fdqu bsm osynbn oulfrex, kahs con vjpmd qtjv bx whwxssp cti hmulkudui yqg f Miywh Sj Efh!
Part 2
Once you have deciphered the message, you must find a hidden secret numerical code. In the message, between the words, a series of numbers between zero and ten written in text are hidden. The secret code to complete this challenge is the multiplication of all the digits contained in the message.
Example
In the text We need to waterprooF OUR boots to meet the virtuoSI-Xylophonists are hidden the numbers 4 and 6. Multiplying both you 4 * 6 = 24.