6.7

Table Of Contents
Users present their primary credentials to the STS interface to acquire SAML tokens. The primary
credential depends on the type of user.
User User name and password available in a vCenter Single Sign-On identity
source.
Application user Valid certificate.
STS authenticates the user based on the primary credentials, and constructs a SAML token that contains
user attributes. STS signs the SAML token with its STS signing certificate, and assigns the token to the
user. By default, the STS signing certificate is generated by VMCA. You can replace the default STS
signing certificate from the vSphere Web Client. Do not replace the STS signing certificate unless your
company's security policy requires replacing all certificates.
After a user has a SAML token, the SAML token is sent as part of that user's HTTP requests, possibly
through various proxies. Only the intended recipient (service provider) can use the information in the
SAML token.
Refresh the Security Token Service Certificate
The vCenter Single Sign-On server includes a Security Token Service (STS). The Security Token Service
is a Web service that issues, validates, and renews security tokens. You can manually refresh the existing
Security Token Service certificate from the vSphere Web Client when the certificate expires or changes.
To acquire a SAML token, a user presents the primary credentials to the Secure Token Server (STS). The
primary credentials depend on the type of user:
Solution user Valid certificate
Other users User name and password available in a vCenter Single Sign-On identity
source.
The STS authenticates the user using the primary credentials, and constructs a SAML token that contains
user attributes. The STS service signs the SAML token with its STS signing certificate, and then assigns
the token to a user. By default, the STS signing certificate is generated by VMCA.
After a user has a SAML token, the SAML token is sent as part of that user's HTTP requests, possibly
through various proxies. Only the intended recipient (service provider) can use the information in the
SAML token.
You can replace the existing STS signing certificate vSphere Web Client if your company policy requires
it, or if you want to update an expired certificate.
Caution Do not replace the file in the filesystem. If you do, errors that are unexpected and difficult to
debug result.
Note After you replace the certificate, you must restart the node to restart both the vSphere Web Client
service and the STS service.
Platform Services Controller Administration
VMware, Inc. 54