Where is Pure-FTPD config file where I can manage cert for TLS?

ChrootEveryone yes
BrokenClientsCompatibility no
MaxClientsNumber 50
Daemonize yes
MaxClientsPerIP 8
VerboseLog no
DisplayDotFiles yes
AnonymousOnly no
NoAnonymous no
SyslogFacility ftp
DontResolve yes
MaxIdleTime 15
MySQLConfigFile /etc/pure-ftpd/pureftpd-mysql.conf
PAMAuthentication yes
LimitRecursion 10000 8
AnonymousCanCreateDirs no
MaxLoad 4
AntiWarez yes
Umask 133:022
MinUID 1000
UseFtpUsers no
AllowUserFXP no
AllowAnonymousFXP no
ProhibitDotFilesWrite no
ProhibitDotFilesRead no
AutoRename no
AnonymousCantUpload yes
AltLog clf:/var/log/pureftpd.log
CreateHomeDir yes
MaxDiskUsage 99
CustomerProof yes
TLS 1
PassivePortRange 40110 40210

Where is cert?