Mobile File Management on iPhone / iPad

Hello,
I come to you to hear testimony on the subject of data sharing iPhone / iPad in the enterprise. I am looking for a solution for data sharing in a Windows environment based on our PKI.
I do long internet search on the topic of data sharing with iPhone authentifiacation based on PKI but I never find a valid solution.
Can you tell me what kind of solutions you use in your business?
Thank you in advance,
cordially