[xmlsec] Create a .pem file

[Lionel Crine 2]

Hi,

I've installed xmlsec but I don't know how to use it.


1/ There are several examples to sign or encrypt documents. 
  But should I create the .c files or xmlsec does it for me?

I'm a little bit confused.


2/ What is a CA?

3/ I sign a template document but in the command tool xmlsec, can I specify 
the output file?
I use  :  xmlsec sign --keys keys.xml sig.xml

4/ How can I create my own rsa, dsa keys ?



I'm sure i'm missing some points.
Can you give me a hand?

Thanks
Lionel

Using libXML 2.4.24
LibXSLT 1.0.20
Openssl 0.9.7