Apache authentication using htpasswd

Options

I have installed Cordys BOP4.3 with SAML authentication on oracle Enterprise Linux 6.
Now we are unable to change it to OS authentication (which required reinstallation of BOP4.3 in OS authentication)
also there is a dependacy on unix which will allow public key encryption mechanism to login into Linux box.
Since SAML authentication required additional authentication tag from external systems which is connecting to cordys which includes extra effort at external systems.

I would like to make use of htpasswd file to store user passowrds and apache to validate the password and provide access for external system without implementing any additional authentication tags in SOAP header.

Can some one let me know how exactly I should configure httpd.conf and cordys_apache.conf files to implemet the same?

Thanks,
Rajeev