# Public Key Infrastructure

There are many different PKI systems out there. We expect most of them will be able to use PKCS#11 modules or CSP modules on Windows, and OpenSC should work fine with most of them.

Here is a list of those we got feedback from:

## OpenCA

OpenCA is an open source CA offering PKI services. It should work with OpenSC as far as we know, but this is not 100% sure. FIXME: add details.

OpenCA is web based, uses the apache server, ldap or sql servers etc.

## IDX-PKI

IDX-PKI is an Open Source implementation of a Public Key Infrastructure which aims to be IETF compliant for PKIX recommendations. IDX-PKI is already used by companies and public agencies. FIXME: add details.

IDX-PKI is also web based, uses the apache server, ldap etc.