For experiment, I want to add a custom field in a TLS certificate then validate it. Because it is experiment, it will be a self-signed certificate. I use OpenSSL 1.1.0g and Ubunut 18.04. Any hint will be helpful.

  • How do you define "Custom Field"? Different x.509 tags in the CN? Recognized SAN entry types? Novel roll-your-own SAN entry types? – gowenfawr Feb 12 '19 at 20:48
  • Yes. My own new field that I will give it a name and it stores a sting value. – user9371654 Feb 12 '19 at 20:50
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    check this answer security.stackexchange.com/questions/155670/… – Bokis Feb 12 '19 at 21:01