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Oklahoma State University

Authentication Services


Authentication software is what confirms the validity of a user’s credentials when they sign in to websites, wireless networks, etc.


The authentication software used at OSU include

  • Active Directory: Authenticates and authorizes users and computers to the network; assigns and enforces security policies for all computers and installs and updates software

  • Active Directory Federated Services (ADFS): Connects IT’s Active Directory to Microsoft cloud services: Microsoft® Office 365™, Exchange, Sharepoint, Skype, and OneDrive.

  • Central Authentication Service (CAS): Allows for the use of O-Key credentials to access multiple systems ( sites).

  • InCommon Federated Services: Allows OSU users to use their O-Key credentials to authenticate to other InCommon federation members (other universities).

  • Lightweight Directory Access Protocol (LDAP): A directory behind the authentication services used to connect to, search, and modify Internet directories.

  • Shibboleth: Allows OSU users to use their O-Key credentials to access systems run by federations of institutions or organizations that have a trust relationship.

  • Universal Authentication Service (UAS): A web authentication service that uses Active Directory or OpenLDAP for verifying identity for access to the sites where it is used.


General Public

Getting Started

Not applicable.