This page includes the following information pertaining to the process of enabling single sign-on using OpenSSO as the IDP.
- Download and install OpenAM/OpenSSO (download the WAR file from here).
- Download the WSO2 product.
WSO2 products come with SAML web-SSO authenticators. The steps necessary for configuration are the focus of this page.
It is not necessary to introduce third party Jars into the server environment since WSO2 products pack all the necessary Jars that deal with SAML token parsing.
Setting up the Environment
OpenSSO provides two options to register a service provider:
- Creating an SP fedlet.
- Setting up an SP using a meta file called sp.xml.
This section focuses on the latter approach. Use the following steps to configure OpenSSO:
Configure the sp.xml file. When doing this, keep the following in mind:
The following are the configurations used in the sp.xml file:
- Go to Common Tasks > Register Remote Service Provider and upload the file.
- Select sp.xml as the file to upload.
- Select a Circle of Trust configuration in the remote service provider.
- Go to Federation > Entity Providers in the OpenSSO management console and select the newly registered service provider.
- Select the response signing attribute.
- Under the NameID Format list, make sure you specify the ‘transient’ and ‘unspecified’ Name ID Formats.
Setting up the WSO2 product
Enable the SAML authenticator and configure the IDP URL in the authenticators.xml file found under
Change the following parameters accordingly:
ServiceProvideID- This can be any identifier and does not have to be a URL. However, the configured value should be equal to the value configured in the sp.xml file.
IdentityProviderSSOServiceURL- This is the URL of your IDP.
idpCertAlias- This is the certificate that gets used during response validation from the IDP. OpenSSO servers’ public key should be imported to the Carbon servers keystore with the alias name ‘opensso’.
Add the public key of the selected circle of trust in to the Carbon keystore (wso2carbon.jks) found under
<PRODUCT_HOME>/resources/security/wso2carbon.jks. You can use Java keytool to do that.
Exporting a public key
Here we use the default shipped OpenSSO keystore certificate. It has the alias name of ‘test’ and typically located in
/home/opensso/opensso/keystore.jks. The default password is ‘changeit’. To export the public key of ‘test’, use the following command:
The public key is stored in the ‘test.cer’ file. You can view the certificate content with the following command:
Importing a public key
Now import the ‘test.cer’ into Carbon key stores found under
<PRODUCT_HOME>/repository/resources/security/wso2carbon.jks. The following command does this:
View the imported certificate using the following command:
Testing the environment
Try accessing the Carbon management console (e.g.,
https://localhost:9443/carbon). This redirects you to the IDP (OpenSSO login page). Enter your username and password in the OpenSSO login page. Once you are properly authenticated, you are redirected back to the WSO2 Carbon product login page as a logged in user.
The authenticated user has to be in the Carbon servers’ user-store for authorization (permission) purposes. Since the above described test environment does not share the same user store between IDP (OpenSSO server) and SP (Carbon server), create a different user in the Carbon server user store. Otherwise there is an authorization failure during the server login.