@misc{1195711, author = {Annabelle Lee}, title = {Guideline for implementing cryptography in the federal government:}, year = {1999}, month = {1999-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.SP.800-21}, language = {en}, }