![]() Once the card is used, the user will not have to reenter usernames or passwords. Smart card-based SSO will ask an end user to use a card holding the sign-in credentials for the first log in.The TGT fetches service tickets for other applications the user wishes to access, without asking the user to reenter credentials. In a Kerberos-based setup, once the user credentials are provided, a ticket-granting ticket ( TGT) is issued.SAML-based SSO services involve communications among the user, an identity provider that maintains a user directory and a service provider. SAML is an extensible markup language (XML) standard that facilitates the exchange of user authentication and authorization data across secure domains.Some SSO services use protocols, such as Kerberos, and Security Assertion Markup Language ( SAML). The service provider will then verify the authentication and log the user in. When a user attempts to access an application from the service provider, the service provider will send a request to the identity provider for authentication. OAuth acts as an intermediary on behalf of the end user by providing the service with an access token that authorizes specific account information to be shared. This graphic provides a visualization of how single sign-on works OAuth, which stands for Open Authorization and is pronounced "oh-auth," is the framework that enables an end user's account information to be used by third-party services, such as Facebook, without exposing the user's password. Single sign-on is a federated identity management ( FIM) arrangement, and the use of such a system is sometimes called identity federation. Password repository with access log password#The service authenticates the end user for all the applications the user has been given rights to and eliminates future password prompts for individual applications during the same session. In a basic web SSO service, an agent module on the application server retrieves the specific authentication credentials for an individual user from a dedicated SSO policy server, while authenticating the user against a user repository, such as a Lightweight Directory Access Protocol ( LDAP) directory. SSO can be used by enterprises, smaller organizations and individuals to ease the management of various usernames and passwords. Single sign-on (SSO) is a session and user authentication service that permits a user to use one set of login credentials - for example, a name and password - to access multiple applications. ![]()
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