TY - GEN AU - Grassi, Paul A AU - Fenton, James L AU - Newton, Elaine M AU - Perlner, Ray A AU - Regenscheid, Andrew R AU - Burr, William E AU - Richer, Justin P AU - Lefkovitz, Naomi B AU - Danker, Jamie M AU - Choong, Yee-Yin AU - Greene, Kristen K AU - Theofanos, Mary F C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2017-06-01 04:06:00 DO - https://doi.org/10.6028/NIST.SP.800-63b LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2017 TI - Digital identity guidelines: authentication and lifecycle management: ER -