DRAFT (2nd ) NIST Special Publication 800 -52 1 Revision 2 2 Guidelines for the Selection, 3 Configuration, and Use of Transport 4 Layer Security (TLS) Implementations 5 6 Kerry McKay 7 David Cooper 8 9 10 11 12 13 14 C O M P U T E R S E C U R I T Y 15 16 17 DRAFT (2nd ) NIST Special Publication 800 -52 18 Revision 2 19 Guidelines for the Selection, 20 Configuration, and Use of Transport 21 Layer Security (TLS) Implementations 22 23 Kerry McKay 24 David Cooper 25 Computer Security Division 26 Information Technology Laboratory 27 28 29 30 31 32 33 34 35 36 37 October 2018 38 39 40 41 42 43 U.S. Department of Commerce 44 Wilbur L. Ross, Jr. , Secretary 45 46 National Institute of Standards and Technology 47 Walter Copan, NIST Director and Under Secretary of Commerce for Standards and Technology 48 Authority 49 This publication has been developed by NIST in accordance with its statutory responsibilities under the 50 Federal Information Security M odernization Act (FISMA) of 2014 , 44 U.S.C. § 3551 et seq. , Public Law 51 (P.L.) 113- 283. NIST is responsible for developing information security standards and guidelines, incl uding 52 minimum requirements for f ederal information systems, but such standards and guidelines shall not apply 53 to national security systems without the e xpress approval of appropriate f ederal officials exercising policy 54 authority over such systems. This guideline is consistent with the requirements of the Office of Management 55 and Budget (OMB) Circular A -130. 56 Nothing in this publication should be taken to contradict the standards and guidelines made mandatory and 57 binding on f ederal agencies by the Secretary of Commerce under statutory authority. Nor should these 58 guidelines be interpreted as altering or superseding the existing authorities of the Secretary of Commerce, 59 Director of the OMB, or any other f ederal official. This publication may be used by nongovernmental 60 organizations on a voluntary basis and is not subject to copyright in the United States. Attribution would, 61 however, be appreciated by NIST. 62 National Institute of Standards and Technology Special Publication 800- 52 Revision 2 63 Natl. Inst. Stand. Technol. Spec. Publ. 800- 52 Rev. 2 , 71 pages ( October 2018) 64 CODEN: NSPUE2 65 Certain commercial entities, equipment, or materials may be identified in this document in order to describe an 66 experimental procedure or concept adequately. Such identification is not intended to imply recommendation or 67 endorsement by NIST, nor is it inte nded to imply that the entities, materials, or equipment are necessarily the best 68 available for the purpose. 69 There may be references in this publication to other publications currently under development by NIST in accordance 70 with its assigned statutory re sponsibilities. The information in this publication, including concepts and methodologies, 71 may be used by f ederal agencies even before the completion of such companion publications. Thus, until each 72 publication is completed, current requirements, guideline s, and procedures, where they exist, remain operative. For 73 planning and transition purposes, f ederal agencies may wish to closely follow the development of t hese new 74 publications by NIST. 75 Organizations are encouraged to review all draft publications during public comment periods and provide feedback to 76 NIST. Many NIST cybersecurity publications , ot her than the ones noted above, are available at 77 https://csrc.nist.gov/publications . 78 79 Public comment period: October 15, 2018 through November 16, 2018 80 National Institute of Standards and Technology 81 Attn: Computer Security Division, Information Technology Laboratory 82 100 Bureau Drive (Mail Stop 8930) Gaithersburg, MD 20899- 8930 83 Email: sp80052- [email protected] 84