Re: tlsv1 alert unknown ca error on cert authentication

From: Andrus <kobruleht2(at)hot(dot)ee>
To: pgsql-bugs(at)lists(dot)postgresql(dot)org
Subject: Re: tlsv1 alert unknown ca error on cert authentication
Date: 2025-06-09 07:34:47
Message-ID: 1f713b36-4903-446b-ac25-b4460f9fe3d1@hot.ee
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Hi!

>Hm. This example works fine for me on RHEL8. Evidently your openssl installation is set up to reject self-signed certificates by
default.

Tried with RapidSSL cert for user varukoopia. Error message is the same.

> I note that in my installation, /etc/pki/tls/openssl.cnf
> contains
>
> [ req ]
> ...
> x509_extensions = v3_ca # The extensions to add to the self signed cert
> ...
> [ v3_ca ]
> # Extensions for a typical CA
> ...
> # Key usage: this is typical for a CA certificate. However since it will
> # prevent it being used as an test self-signed certificate it is best
> # left out by default.
> # keyUsage = cRLSign, keyCertSign
>
> Perhaps in your configuration file, that option is active?

It is not active.

Tried self signed cert for user varukoopia, but error message is the same.

Tried with

log_min_messages = debug5

but log does not contain more information about error

Certs used and openssl conf were sent to Tom as message attachments.

Andrus

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