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Electronic Authentication Guideline



William E. Burr, Donna F. Dodson, Elaine M. Newton, Ray A. Perlner, William T. Polk, Sarbari Gupta, Emad A. Nabbus


This recommendation provides technical guidelines for Federal agencies implementing electronic authentication and is not intended to constrain the development or use of standards outside of this purpose. The recommendation covers remote authentication of users (such as employees, contractors, or private individuals) interacting with government IT systems over open networks. It defines technical requirements for each of four levels of assurance in the areas of identity proofing, registration, tokens, management processes, authentication protocols and related assertions. This publication supersedes NIST SP 800-63-1. [Supersedes SP 800-63-1 (December 2011):]
Special Publication (NIST SP) - 800-63-2
Report Number


authentication, authentication assurance, credential service provider, electronic authentication, electronic credentials, identity proofing, passwords, PKI, tokens.


Burr, W. , Dodson, D. , Newton, E. , Perlner, R. , Polk, W. , Gupta, S. and Nabbus, E. (2013), Electronic Authentication Guideline, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed June 23, 2024)


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Created August 29, 2013, Updated November 10, 2018