Install this IdP's certificate in the Salesforce org for login to via SAML:
- Download the Identity Provider Certificate
- In Salesforce, go to Setup | Security Controls | Single Sign-On Settings | Federated single sign-on using SAML
- Install the dowloaded certificate in the Identity Provider Certificate field
- Configure the Issuer, User Id Type, and User Id Location settings. These values are arbitrary, but must be matched when generating the SAML Response in the next step.
Matching the configuration set in Salesforce above, generate a SAML Response. If you already have a SAML Response, skip this step.
Alternatively, you can perform this request via the Axiom API. Download the WSDL for a description of this service.
Make any modifications to the generated Response and/or Target values and submit to Salesforce to initiate a SAML login