Reports on Computer Systems TechnologyThe Information Technology Laboratory (ITL) at the National Institute of Standards and Technologypromotes the U.S. economy and public welfare by providing technical leadership for the nation’smeasurement and standards infrastructure. ITL develops tests, test methods, reference data, proof-ofconceptimplementations, and technical analyses to advance the development and productive use ofinformation technology. ITL’s responsibilities include the development of technical, physical,administrative, and management standards and guidelines for the cost-effective security and privacy ofsensitive unclassified information in federal computer systems. The Special Publication 800-seriesreports on ITL’s research, guidance, and outreach efforts in computer security, and its collaborativeactivities with industry, government, and academic organizations.National