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Electronic Authentication: Guidance for Selecting Secure Techniques



Shirley M. Radack


This ITL Bulletin summarizes the contents of NIST Special Publication 800-63, Electronic Authentication Guideline, by William E. Burr, Donna F. Dodson, and W. Timothy Polk, which provides technical guidance on existing and widely implemented methods for remote authentication. The bulletin covers the authentication process, the selection of authentication techniques, and the appropriate techniques for each of the four levels of authentication that have been defined for federal agency use.
ITL Bulletin -


authentication, credentials, cryptography, identification, PKI, Public Key Infrastructure


Radack, S. (2004), Electronic Authentication: Guidance for Selecting Secure Techniques, ITL Bulletin, National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed March 3, 2024)
Created August 1, 2004, Updated February 19, 2017