I’m using the below snipped for setting the certificate and key for client authentication.
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 PEM
On 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.
Edit: Here is proof that the private key and the certificate correspond to each other:
[debugbld@nagara ~/curlm]$ openssl x509 -noout -modulus -in clientCert.pem | openssl md5 d7207cf82b771251471672dd54c59927 [debugbld@nagara ~/curlm]$ openssl rsa -noout -modulus -in privateKey.pem | openssl md5 Enter pass phrase for privateKey.pem: d7207cf82b771251471672dd54c59927
So why can’t it work?