I have problems when signing with the PKCS#12
Answer
When you want to use ".p12" or ".pfx" files to sign, Java has a criptographic limitations by default. To avoid it you have to install the "unlimited strength policy":
https://cds.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_Developer-Site/en_US/-/USD/ViewProductDetail-Start?ProductRef=jce_policy-6-oth-JPR@CDS-CDS_Developer
Other mode to avoid it is installing the file ".p12" on Windows and signing from Windows Crypto Api, as we explain on our manual
Let us know if didn't find what you were looking for