Unable to use libcurl to access a site requiring client authentication Post: 302525007

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Top Forums Programming Unable to use libcurl to access a site requiring client authentication Post 302525007 by old_as_a_fossil on Wednesday 25th of May 2011 10:23:29 AM

05-25-2011

Registered User

Unable to use libcurl to access a site requiring client authentication

I’m using the below snipped for setting the certificate and key for client authentication.

Code:

 curl_easy_setopt(curl,CURLOPT_SSLCERT,"clientCert.pem");
curl_easy_setopt(curl,CURLOPT_SSLCERTPASSWD,"changeit"); 
curl_easy_setopt(curl,CURLOPT_SSLCERTTYPE,"PEM"); 
curl_easy_setopt(curl,CURLOPT_SSLKEY,"privateKey.pem"); 
curl_easy_setopt(curl,CURLOPT_SSLKEYPASSWD,"changeit"); 
curl_easy_setopt(curl,CURLOPT_SSLKEYTYPE,"PEM");

The certificate doesn’t have a password, I don’t know why on earth the option SSLCERTPASSWD exists, I just provided a dummy value. When I run the program on Linux I get an error code of 58 and an error message unable to set private key file: 'privateKey.pem' type PEMOn Windows however I get unable to use client certificate (no key found or wrong pass phrase?)
It seems to suggest the certificate and the key don’t match but I don’t know how. I have extracted both the cert and the key from a p12 file using openssl commands. The command I used to extract the key is
openssl.exe pkcs12 -in client.p12 -nocerts -out privateKey.pem
and the command used to extract the cert is
openssl.exe pkcs12 -in client.p12 -nokeys -out clientCert.pem

The p12 file has been successfully used in a browser to access the client authentication url. Please help before I shoot myself.

Last edited by old_as_a_fossil; 05-25-2011 at 11:32 AM..

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LEARN ABOUT HPUX

ssh-keysign

ssh-keysign(1M)                                                                                                                    ssh-keysign(1M)

NAME

       ssh-keysign - ssh helper program for host-based authentication

SYNOPSIS

       ssh-keysign

       ssh-keysign  is  used  by ssh(1) to access the local host keys and generate the digital signature required during host-based authentication
       with SSH protocol version 2. This signature is of data that includes, among other items, the name of the client host and the  name  of  the
       client user.

       ssh-keysign  is  disabled  by  default and can be enabled only in the global client configuration file /etc/ssh/ssh_config by setting Host-
       basedAuthentication to yes.

       ssh-keysign is not intended to be invoked by the user, but from ssh. See ssh(1) and sshd(1M) for more information about host-based  authen-
       tication.

       /etc/ssh/ssh_config

           Controls whether ssh-keysign is enabled.

       /etc/ssh/ssh_host_dsa_key
       /etc/ssh/ssh_host_rsa_key

           These  files  contain the private parts of the host keys used to generate the digital signature. They should be owned by root, readable
           only by root, and not accessible to others. Because they are readable only by root, ssh-keysign must  be  set-uid  root  if  host-based
           authentication is used.

       ssh-keysign will not sign host-based authentication data under the following conditions:

         o  If the HostbasedAuthentication client configuration parameter is not set to yes in /etc/ssh/ssh_config. This setting cannot be overri-
            den in users' ~/.ssh/ssh_config files.

         o  If the client hostname and username in /etc/ssh/ssh_config do not match the canonical hostname of  the  client  where  ssh-keysign  is
            invoked and the name of the user invoking ssh-keysign.

       In  spite of ssh-keysign's restrictions on the contents of the host-based authentication data, there remains the ability of users to use it
       as an avenue for obtaining the client's private host keys. For this reason host-based authentication is turned off by default.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWsshu                     |
       +-----------------------------+-----------------------------+
       |Interface Stability          |Evolving                     |
       +-----------------------------+-----------------------------+

       ssh(1), sshd(1M), ssh_config(4), attributes(5)

AUTHORS

       Markus Friedl, markus@openbsd.org

HISTORY

       ssh-keysign first appeared in Ox 3.2.

                                                                    9 Jun 2004                                                     ssh-keysign(1M)