I purchased a Godaddy Certificate, I correctly installed it on my Mac Server, so now I see 2 entry within Keychain Application:
CustomLog "/private/var/log/apache2/mydomain.com-access_log" common
JkMount /* ajp13
In the Keychain, export your private key and certificate in PKCS#12 format (.p12 file, Personal Information Exchange). You should be able to do this using by expanding your private key entry (in Keychain Access), right-clicking on its certificate and using Export. It will probably ask you for a password to protect this p12 file.
Then, in the Terminal, extract the private key using OpenSSL:
umask 0077 openssl pkcs12 -in filename.p12 -nocerts -nodes -out filename-key.pem umask 0022
Similarly, for the certificate (although it seems you may already have it in PEM format, so you might not need this step):
openssl pkcs12 -in filename.p12 -clcerts -nokeys -out filename-cert.pem
Then, set the
SSLCertificateFile (cert) and
SSLCertificateKeyFile (private key) options to point to these files in your Apache Httpd configuration.