[pwdisswordfish2]

If the owner of the example.com website creates the CSR and send its to the user, then the result is not "faked up". I use the term "faked up" only to refer to a scenario where the user generates a CSR for a domain name that is not under her control.

[josephcsible]

Fair enough. This command would do it then:

    openssl x509 -req -days 365 -in example.com.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out example.com.crt