NIST is in the process of a periodic review and maintenance of its cryptography standards and guidelines.  

Currently, we are reviewing the following publications: 

• Federal Information Processing Standard (FIPS) 198-1, The Keyed-Hash Message Authentication Code (HMAC), 2008
• NIST Special Publication (SP) 800-22 Rev. 1a, A Statistical Test Suite for Random and Pseudorandom Number Generators for Cryptographic Operations, 2010
• NIST SP 800-38D, Recommendation for Block Cipher Modes of Operation: Galois/Counter Mode (GCM) and GMAC, 2007
• NIST SP 800-38E, Recommendation for Block Cipher Modes of Operation: the XTS-AES Mode for Confidentiality on Storage Devices, 2010
• NIST SP 800-107 Rev. 1, Recommendation for Applications Using Approved Hash Functions, 2012.  

The public comment period for these publications is open through October 1, 2021. Comments may address security, implementation, clarity, and/or risk issues as well as relevance to current applications.

Send comments to cryptopubreviewboard@nist.gov with the publication number in the Subject, e.g., “Comments on FIPS 198-1” or “Comments on SP 800-38D.” 

For more information about the review process, visit the Crypto Publication Review Project page.