[Pki-users] Can OpensSSL be used as external CA ?

Kritee Jhawar kriteejhawar at gmail.com
Sat Nov 8 06:48:45 UTC 2014


Hi Christina 

When using Dogtag as external CA I had provided only the self signed certificate as pkcs7 (the same way I did for OpenSSL) and it had worked. 

The idea behind this was we needed a constant trust anchor to be burnt into the devices(which will function as clients). Initially I tried to find a way to provide a static root certificate to dogtag so that even after the crash it will come up with the same certificate. 
Then I moved onto the  l

Sent from my iPhone

> On 07-Nov-2014, at 22:38, Christina Fu <cfu at redhat.com> wrote:
> 
> Hi Kritee,
> 
> I just looked closely.  Your ca cert chain contains only one single self-signed root cert.  I think what you need is a chain down to the dogtag CA cert that links up from the root, so in your case, you should have both the root and the dogtag CA cert in the pkcs7.
> 
> Hope that helps.
> Christina
> 
> 
>> On 11/06/2014 01:25 AM, kritee jhawar wrote:
>> Hi Christina
>> 
>> Thanks for the response. PFA the typescript for pkispawn step1 and pkispawn step2.
>> 
>> Thanks,
>> Kritee
>> 
>> On Thu, Nov 6, 2014 at 8:01 AM, Christina Fu <cfu at redhat.com> wrote:
>>> Hi Kritee,
>>> I think we could use a bit more info.  
>>> Could you try running pkispawn with script... something like the following:
>>> script -c 'pkispawn -s CA -f config-step2.txt -vvv'
>>> 
>>> the resulting typescript file might give us some more clue.
>>> Christina
>>> 
>>> 
>>>> On 10/31/2014 09:24 PM, kritee jhawar wrote:
>>>> Thanks Christina
>>>> 
>>>> I checked out the master branch and built it. Now i can see the added extensions in the CSR generated, however i am getting the same error as earlier.
>>>> This time again, I tried the supply the certificate chain with and without the headers. The chain is in a  valid pkcs7 format.
>>>> Following is how the extensions look in the certificate signed by openssl for dogtag:
>>>> 
>>>>       X509v3 extensions:
>>>>             X509v3 Basic Constraints: critical
>>>>                 CA:TRUE
>>>>             X509v3 Key Usage: critical
>>>>                 Digital Signature, Non Repudiation, Certificate Sign, CRL Sign
>>>>             1.3.6.1.4.1.311.20.2:
>>>>                 .
>>>> .S.u.b.C.A
>>>> 
>>>> The error i get in step 2 of pkispawn is as follows:
>>>> 
>>>> pkispawn    : INFO     ....... BtoA                             /root/.dogtag/pki-tomcat/ca/alias/admin_pkcs10.bin /root/.dogtag/pki-tomcat/ca/alias/admin_pkcs10.bin.asc
>>>> pkispawn    : INFO     ....... loading external CA signing certificate from file: '/home/kjhawar/dogtag/dg_ca.cert'
>>>> pkispawn    : INFO     ....... loading external CA signing certificate chain from file: '/home/kjhawar/dogtag/dg_chain.cert'
>>>> pkispawn    : INFO     ....... configuring PKI configuration data.
>>>> pkispawn    : INFO     ....... AtoB                             /root/.dogtag/pki-tomcat/ca_admin.cert /root/.dogtag/pki-tomcat/ca_admin.cert.der
>>>> pkispawn    : INFO     ....... certutil -A -d /root/.dogtag/pki-tomcat/ca/alias -n PKI Administrator -t u,u,u -i /root/.dogtag/pki-tomcat/ca_admin.cert.der -f /root/.dogtag/pki-tomcat/ca/password.conf
>>>> Notice: Trust flag u is set automatically if the private key is present.
>>>> pkispawn    : INFO     ....... pk12util -d /root/.dogtag/pki-tomcat/ca/alias -o /root/.dogtag/pki-tomcat/ca_admin_cert.p12 -n PKI Administrator -w /root/.dogtag/pki-tomcat/ca/pkcs12_password.conf -k /root/.dogtag/pki-tomcat/ca/password.conf
>>>> pkispawn    : INFO     ... finalizing 'pki.server.deployment.scriptlets.finalization'
>>>> pkispawn    : INFO     ....... cp -p /etc/sysconfig/pki/tomcat/pki-tomcat/ca/deployment.cfg /var/log/pki/pki-tomcat/ca/archive/spawn_deployment.cfg.20141101020655
>>>> pkispawn    : INFO     ....... generating manifest file called '/etc/sysconfig/pki/tomcat/pki-tomcat/ca/manifest'
>>>> pkispawn    : INFO     ....... cp -p /etc/sysconfig/pki/tomcat/pki-tomcat/ca/manifest /var/log/pki/pki-tomcat/ca/archive/spawn_manifest.20141101020655
>>>> pkispawn    : INFO     ....... executing 'systemctl daemon-reload'
>>>> pkispawn    : INFO     ....... executing 'systemctl restart pki-tomcatd at pki-tomcat.service'
>>>> Job for pki-tomcatd at pki-tomcat.service canceled.
>>>> pkispawn    : ERROR    ....... subprocess.CalledProcessError:  Command '['systemctl', 'restart', 'pki-tomcatd at pki-tomcat.service']' returned non-zero exit status 1!
>>>> 
>>>> Installation failed.
>>>> 
>>>> Kindly let me know if any specific configuration has to be done in my openssl CA. Attaching the config file i am using currently
>>>> 
>>>> Thanks
>>>> Kritee
>>>> 
>>>>> On Fri, Oct 31, 2014 at 10:36 PM, Christina Fu <cfu at redhat.com> wrote:
>>>>> Kritee,
>>>>> 
>>>>> At the minimum, you need the fixes I talked about. They were checked into the master but has not been built officially so yum is not going to get you the right rpm.  However, you can check it out and build it yourself.
>>>>> Here is how you check out the master:
>>>>> git clone git://git.fedorahosted.org/git/pki.git
>>>>> You can then use the build scripts to build.
>>>>> 
>>>>> Finally, I apologize that we are not supposed to respond to private emails.  Dogtag is a community where we share our knowledge.  In the future please send requests to the mailing list.
>>>>> I took the exception this time to look at your CSR and certs and I could see that you need the fixes I talked about.  I don't know if you have other issues though, but AFAIK you need those two fixes.
>>>>> 
>>>>> Hope this helps.
>>>>> Christina
>>>>> 
>>>>> 
>>>>>> On 10/29/2014 01:16 AM, kritee jhawar wrote:
>>>>>> Hi Christina
>>>>>> 
>>>>>> I have done the default configuration for 389ds and haven't specifically turned on ssl for it. 
>>>>>> 
>>>>>> Initially I tried using Microsoft and OpenSSL CA as external CAs. This is about a month back and I pull the Rpms using yum (so I assume they are the latest ones with the fix you mentioned). 
>>>>>> With this, my pki spawn went fine. Infect the admin cert got generated using the externally provided root cert as well. But dogtag couldn't                                   connect to the ds. As mentioned earlier it gave me a PKIException error listing the certs with error code 500. 
>>>>>> Looking at the ds logs I found that the error was 'bad search filter'. 
>>>>>> However when I tried the same steps with dogtag as external CA the setup went through without a glitch. The chain I imported was directly from the GUI of dogtag. In fact I included the header and footer as well. 
>>>>>> 
>>>>>> When I tried to reverse engineer the chain, I took the root cert of external dogtag ca and used OpenSSL to convert it into pkcs7. This chain was not the same as provided from the GUI. Hence I thought that there is some particular format for the chain because of which the other CAs aren't working. 
>>>>>> 
>>>>>> Also, I updated the Rpms using yum and tried to generate the CSR with the extra attributes. My csr still doesn't reflect those added attributes. 
>>>>>> 
>>>>>> Is yum not the correct way to get the latest code ?
>>>>>> 
>>>>>> I am very new to this, really appreciate your assistance and time.
>>>>>> 
>>>>>> Regards 
>>>>>> Kritee 
>>>>>> 
>>>>>>> On Wednesday, 29 October 2014, Christina Fu <cfu at redhat.com> wrote:
>>>>>>> the cert chain you provide in the file specified under
>>>>>>> pki_external_ca_cert_chain_path
>>>>>>> should be just pkcs7 without header/footer.
>>>>>>> 
>>>>>>> I don't know why it would not talk to the DS (did you turn on ssl for the ds?).
>>>>>>> Not sure if you build your Dogtag from the master, if you do, I'd suggest you get the most updated so you get fixes from the tickets I provided previously which would address at least two issues relating to external CA.
>>>>>>> 
>>>>>>> Christina
>>>>>>> 
>>>>>>>> On 10/27/2014 07:55 PM, kritee jhawar wrote:
>>>>>>>> Hi Christina 
>>>>>>>> 
>>>>>>>> I was undertaking this activity last month where Microsoft CA didn't work out but Dogtag as external CA did. 
>>>>>>>> 
>>>>>>>> While using Microsoft CA or OpenSSL CA, pki spawn goes through without any error but dogtag stops communications to 389ds. Upon calling the rest Api /ca/rest/certs I get a "PKIException error listing the certs". 
>>>>>>>> 
>>>>>>>> Is there a particular format for the ca cert chain that we need to provide ? I was trying to reverse engineer the chain provided by dogtag. 
>>>>>>>> 
>>>>>>>> Thanks 
>>>>>>>> Kritee
>>>>>>>> 
>>>>>>>> 
>>>>>>>> 
>>>>>>>>> On Monday, 27 October 2014, Christina Fu <cfu at redhat.com> wrote:
>>>>>>>>> If you meant the following two:
>>>>>>>>> https://fedorahosted.org/pki/ticket/1190 CA: issuer DN encoding not                                                     preserved at issuance with signing cert signed by an external CA 
>>>>>>>>> https://fedorahosted.org/pki/ticket/1110 - pkispawn (configuration) does not provide CA extensions in subordinate certificate signing requests (CSR) 
>>>>>>>>> 
>>>>>>>>> They have just recently been fixed upstream so I imagine you could use Microsoft CA now.  Theoretically any other CA can be used as an external CA, but if you run into issues, please feel free to report.
>>>>>>>>> 
>>>>>>>>> Christina
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>>> On 10/27/2014 12:15 AM, kritee jhawar wrote:
>>>>>>>>>> Hi
>>>>>>>>>> 
>>>>>>>>>> In my recent thread i read that there is a bug due to which Microsoft CA can't work as external CA for dogtag.
>>>>>>>>>> Can OpenSSL be used ? 
>>>>>>>>>> 
>>>>>>>>>> Thanks
>>>>>>>>>> Kritee
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> _______________________________________________
>>>>>>>>>> Pki-users mailing list
>>>>>>>>>> Pki-users at redhat.com
>>>>>>>>>> https://www.redhat.com/mailman/listinfo/pki-users
>>>>> 
>>>>> 
>>>>> _______________________________________________
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> 
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