vCenter Single Sign-On Client Example (.NET) This chapter describes a C# example of acquiring a vCenter Single Sign-On security token. vCenter Single Sign-On Token Request OverviewSend a Request for a Security Token with C#To send a request for a security token, the sample specifies username and password assertions to satisfy the security policy, creates a request token, and calls the Issue method. The following sequence shows these operations. Solution Certificate Support for the vCenter Single Sign-On ServerSolutions that are integrated into the vSphere environment must perform authentication with the vCenter Single Sign-On server to obtain a SAML token for use in the environment.