NIST Special Publication 800 -175B Revision 1 Guideline for Using Cryptographic S tandards in the Federal Government: Cryptographic Mechanisms Elaine Barker This publication is available free of charge from: https://doi.org/10.6028/ NIST.SP.800- 175Br1 C O M P U T E R S E C U R I T Y NIST Special Publication 800 -175B Revision 1 Guideline for Using Cryptographic Standards in the Federal Government: Cryptographic Mechanisms Elaine Barker Computer Security Division Information Technology Laboratory This publication is available free of charge from: https://doi.org/10.6028/ NIST.SP.800- 175Br1 March 2020 U.S. Department of Commerce Wilbur L. Ross, Jr. , Secretary National Institute of Standards and Technology Walter Copan , Director of NIST and Under Secretary of Commerce for Standards and Technology Authority This publication has been developed by NIST in accordance with its statutory responsibilities under the Federal Information Security M odernization Act (FISMA) of 2014 , 44 U.S.C. § 355 1 et seq., Public Law (P.L.) 113 -283. NIST is responsible for developing information security standards and guidelines, including minimum requirements for f ederal information systems, but such standards and guidelines shall not apply to national security syste ms without the e xpress approval of appropriate f ederal officials exercising policy authority over such systems. This guideline is consistent with the requirements of the Office of Management and Budget (OMB) Circular A -130. Nothing in this publication should be taken to contradict the standards and guidelines made mandatory and binding on federal agencies by the Secretary of Commerce under statutory authority. Nor should these guidelines be interpreted as altering or supersed ing the existing authorities of the Secretary of Commerce, Dir ector of the OMB, or any other f ederal official. This publication may be used by nongovernmental organizations on a voluntary basis and is not subject to copyright in the United States. Attribu tion would, however, be appreciated by NIST. National Institute of Standards and Technology Special Publication 800-175B Revision 1 Natl. Inst. Stand. Technol. Spec. Publ. 800- 175B Rev. 1 , 91 pages ( March 2020) CODEN: NSPUE2 This publication is available free of charge from: https://doi.org/10.6028/ NIST.SP.800 -175Br1 Certain commercial entities, equipment, or materials may be identified in this document in order to describe an experimental procedure or concept adequately. Such identification is not intended to imply recommendation or endorsement by NIST, nor is it intended to imply that the entities, materi als, or equipment are necessarily the best available for the purpose. There may be references in this publication to other publications currently under development by NIST in accordance with its assigned statutory responsibilities. The information in this publication, including concepts and methodologies, may be used by federal agencies even before the completion of such companion publications. Thus, until each publication is completed, current requirements, guideline s, and procedures, where they exist, rem ain operative. For planning and transition purposes, federal agencies may wish to closely follow the development of these new publications by NIST. Organizations are encouraged to review all draft publications during public comment periods and provide feedback to NIST. Many NIST cybersecurity publications , other than the ones noted above, are available at https://csrc.nist.gov/publications . Comments on this publication may be submitted to: National Institute of Standards and Technology Attn: Computer Security Division, Information Technology Laboratory 100 Bureau Drive (Mail Stop 8930) Gaithersburg, MD 20899 -8930 Email: SP800 -175@nist.gov All comments are su