Asymmetric encryption

Public key : h = 73330949468054266339736059966163115422833110001813930156572925994430534515701041694575237481490423760040161412485270328946843621926017679828099160193896451942677909170326499074052895811389384127128660603167737514212742776617004843 f = 21967049646779071111154065198365570932077456576877652855842197804897595032834868745371998020362301638157736367326554393571476569998269164882692801500138950736669245744050691 Alice and bob are using an asymmetric encryption whose php implementation is available here to communicate secretly. Below, a secret message crypted with the previous public key. Recover the corresponding plaintext message. C : 6731295524911221106270379796892171240571184975030578545887261462176891423345179904403351653181572275213940442737785148449340412184480525856192602398246144818261962634370590467975309525379473958628198946400097395139414647957033024 You have 3 seconds to solve this challenge. Digital values change on each page refresh.

[1] Public-key cryptography [2] Modular arithmetic