public_key:get_asn1_module - function_clause w/ TBSCertificate

[rlipscombe]

Describe the bug

Similar to #9880, I'm getting failures when DER-encoding TBSCertificate entities. But this is still a problem in OTP-28.0.1, wherein #9880 is shown as fixed.

 {error,function_clause,
                           [{public_key,get_asn1_module,
                                ['TBSCertificate'],

To Reproduce

Given a populated #'Certificate'{} record, try to DER-encode it:

to_der(#'Certificate'{} = Certificate) ->
    public_key:der_encode('Certificate', Certificate).

See, for example, https://github.com/rlipscombe/erl509/actions/runs/15967723875/job/45031671154

Expected behavior

I'd get a DER-encoded certificate.

Affected versions

OTP-28.0.1

[rlipscombe]

I suspect that if I use OTPCertificate instead of Certificate, it'll work fine for my purposes. I'll try that later today.

Update: I tried this; ran into some problems. I really ought to do it anyway (for compat with voltone/x509), but it fell off my priority list.

[IngelaAndin]

Humm, well seems it is quite easy to overlook parts of the specs that are not heavily used and not so clearly documented but that was automatically part of the API with the old solution. The new solution is much better in many ways but alas makes part of the API not automatically generated. I will add this one too.