Mbedtls questions: cert fields + sign csr

Dear All,

As far as I can see the X.509 certificate fields "O" (organisation) and "OU" (organisation unit) are supported by the px5g package. Is there any reason why these are not included in the uhttpd config and init script?

Currently the self signed certs are generated with silly strings like "O=router081623". I've modified the files on my systems, so it's not a big issue for me. I just would like to know if it's possible to have these fields officially, at least as an option.

And another certificate related question: is there any way to sign a CSR with mbedtls? I could find only key and csr generation utilities, but nothing for the signing. Should I install the openssl package in order to have the CA function?