TY - GEN AU - Barker, Elaine C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2016-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.SP.800-57pt1r4 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2016 TI - Recommendation for Key Management Part 1: General: ER -