This directory contains XML files that have SSL certificates in them. There should be at least a rootcert.xml file, but you can add more files if you want. The format is simple, there is one element in each file, with any number of child elements. In each certificate, there is a tag to contain the certificate data. Example: Lots of nice data here Data of another cert ... The data is DER+Base64 format, which is basically PEM but without the header, footer, or newlines.