NIST IR 8149 Developing Trust Frameworks to Support Identity Federations David Temoshok Christine Abruzzi This publication is available free of charge from: https://doi.org/10.6028/ NIST.IR. 8149 NISTIR 8149 Developing Trust Frameworks to Support Identity Federations D avid Temoshok. Applied Cybersecurity Division Information Technology Laboratory C hristine Abruzzi. Deloitte & Touche LLP Rosslyn, VA T his publication is available free of charge from: https://doi.org/10.6028/ NIST.IR. 8149 J anuary 2018 U .S. Department of Commerce Wilbur L. Ross, Jr., Secretary N ational Institute of Standards and Technology Walter Copan, NIST Director and Under Secretary of Commerce for Standards and Technology NISTIR 8149 DEVELOPING TRUST FRAMEWORKS TO SUPPORT IDENTITY FEDERATIONS National Institute of Standards and Technology Interagency or Internal Report 8149 34 pages ( January 2018) This publication is available free of charge from: https ://doi.org/10.6028/ NIST.IR.8149 Certain commercial entities, equipment, or materials may be identified in this document in order to describe an experimental procedure or concept adequately. Such identification is not intended to imply recommendation or endorsement by NIST, nor is it inte nded to imply that the entities, materials, or equipment are necessarily the best available for the purpose. There may be references in this publication to other publications currently under development by NIST in accordance with its assigned statutory responsibilities. The information in this publication, including concepts and methodologies, may be used by f ederal agencies even before the completion of such companion publications. Thus, until each publication is completed, current requirements, guideline s, and procedures, where they exist, remain operative. For planning and transition purposes, f ederal agencies may wish to closely follow the development of these new publications by NIST. Organizations are encouraged to review all draft publications during public comment periods and provide feedback to NIST. Many NIST cybersecurity publications , ot her than the ones noted above, are available at http://csrc.nist.gov/publications . National Institute of Standards and Technology Attn: Applied Cybersecurity Division, Information Technology Laboratory 100 Bureau Drive (Mail Stop 2000) Gaithersburg, MD 20899- 2000 Email: trustframeworks@nist.gov All comments are subject to release under the Freedom of Information Act (FOIA). NISTIR 8149 DEVELOPING TRUST FRAMEWORKS TO SUPPORT IDENTITY FEDERATIONS ii This publication is available free of charge from: http s://doi.org/10.6028/ NIST.IR.8149 Reports on Computer Systems Technology The Information Technology Laboratory (ITL) at the National Institute of Standards and Technology (NIST) promotes the U.S. economy and public welfare by providing technical leadership for the Nation’s measurement and standards infrastructure. ITL develops tests, test methods, reference data, proof of concept implementations, and technical analyses to advance the development and productive use of information technology. ITL’s responsibilities include the development of management, administrative, technical, and physical standards and guidelines for the cost -effective security and privacy of other than national s ecurity -related information in f ederal infor mation systems. Abstract When supported by trust frameworks, identity federations provide a secure method for leveraging shared identity credentials across communities of similarly -focused online service providers. This document explores the concepts around trust frameworks and identity federations and provides topics to consider in their development and implementation. Keywords Identity; identity federation; trust frameworks; identity management; multilateral agreements; credential service providers; authentication ; relying part