[openssl-users] A self-signed CA certificate in the CA file *sometimes* stops verification working
openssl-users at dukhovni.org
Tue Sep 6 17:46:33 UTC 2016
> On Sep 6, 2016, at 11:53 AM, John Unsworth <John.Unsworth at synchronoss.com> wrote:
> I have noticed the following behaviour:
> 1 Create a certificate file with two CA certificates, one for the server being connected to (server A) and one for another server (server B).
> 2 Whichever way the CA certificates are ordered the connect works OK.
> 3 Add a self-signed CA certificate in the file before the one for server A. The connect fails ‘Verify return code: 21 (unable to verify the first certificate)’.
> 4 Move the self-signed CA certificate after the one for server A. The connect works OK.
> Why should the self-signed certificate affect the connection when the required CA certificate is in the certificate file? Is this a bug?
You've provided much too little detail for a meaningful answer.
Post the server chain being validated as reported by
$ openssl s_client -showcerts -connect <server>:443 > chain.pem
$ openssl crl2pkcs7 -nocrl -certfile chain.pem |
openssl pkcs7 -print_certs
and all three CA certificates. Do not post any of the private keys.
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