extension for a simple certification authority

[scop]

Portecle already has lots of capabilities required for a simple certification authority:

* creating/import of keys and certificates
* generate certification requests
* import CA replies

It would be useful extension, if Portecle could establish a simple self contained certification authority by providing tasks like:

* sign certification requests
* generate a CRL

Reported by: felxator

[scop]

This would be great, this would turn portecle also as a mini pki software

missing features, by order of priority, are:
-generate a internal CA
-sign certification requests
-revoke certificate
-generate a CRL

tinyCA2 and easyrsa can be used as a guide of require features

Original comment by: higuita