[openssl-users] How to verify a cert chain using Openssl command line?

[Ben Humpert]

Yes, because nameConstraints are inherited.

I don't know exactly where the bug lies but I strongly advise NOT to
use nameConstraints because while there is a standard nobody has
implemented full or correctly working support for it. I ran various
tests some weeks ago and the result was horrible. See
https://mta.openssl.org/pipermail/openssl-users/2015-May/001387.html
and https://mta.openssl.org/pipermail/openssl-users/2015-May/001388.html

2015-06-29 23:58 GMT+02:00 David Li <dlipubkey at gmail.com>:
> The subCA  has nameConstraints in the subCA configuration file:
>
> [name_constraints]
> permitted;DNS.0 = example.com
>
> client configuration file has subjectAltName:
> subjectAltName = DNS: www.cs.com
>
> So is this a mismatch? How come s_client/s_server test was okay?
>
>
>
>
>
> On Mon, Jun 29, 2015 at 2:12 PM, Ben Humpert <ben at an3k.de> wrote:
>> Do you use nameConstraints or have specified IP in subjectAltName?
>> Because OpenSSL can't handle that correctly.
>>
>> 2015-06-29 22:51 GMT+02:00 David Li <dlipubkey at gmail.com>:
>>> Hi,
>>>
>>> As a test, I have created a rootCA, a subCA (signed by the rootCA) and
>>> a client cert (signed by the subCA). Now I want to use verify,
>>> s_client and s_server to test them together.
>>>
>>> However I searched and tried a number of times but still unsure about
>>> the correct syntax format in verify command. This is what I did:
>>>
>>> cat rootCA.crt subCA.crt > caChain.crt
>>>
>>> openssl -verbose -verify -CAflie caChain.crt clientCert.crt
>>>
>>> openssl verify -CAfile caChain.crt client/clientCert.crt
>>> client/clientCert.crt: C = US, ST = California, O = David's company,
>>> CN = David's client cert, emailAddress = david.li at example.com
>>> error 47 at 0 depth lookup:permitted subtree violation
>>>
>>>
>>> However it seems my s_client and s_server test is OK:
>>>
>>> I created a caChain by cancatenating rootCA and subCA together:
>>>
>>> Server:
>>> openssl s_server -cert server/serverComb.crt -www -CAfile caChain.crt -verify 3
>>>
>>> where serverComb.crt = cat of serverCert and server key
>>>
>>> Client:
>>> openssl s_client -CAfile caChina.crt -cert client/clientComb.crt
>>>
>>> where clientComb is  = cat of clientCert and clientKey
>>>
>>>
>>> Anyone has any idea why verify command failed?
>>>
>>> Thanks.
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