sign pdfs digital with p12 certificates - support of ipad pro

Dear Adobe Acrobat Team,

we need to sign pdf documents with a digital signature based on p12 files (dfn pki) on an iPad Pro. Does Adobe support this? As I saw with the fill and sign app it is only an graphical signature but not based on a user certificate.
Also tested with a trial version of adobe acrobat app on a normal iPad (no Pro), I found no Programm menue to add/apply this digital signature to a pdf.

kind regards, Matthias Ehrig