You are viewing this page in an unauthorized frame window. This is a potential security issue, you are being redirected to https://csrc.nist.gov . An official website of the United States government Here’s how you know Here’s how you know Official websites use .gov A .gov website belongs to an official government organization in the United States. Secure .gov websites use HTTPS A lock ( Lock Locked padlock icon ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites. Search Search CSRC MENU Search Search Projects Publications Expand or Collapse Drafts for Public Comment All Public Drafts Final Pubs FIPS (standards) Special Publications (SP s ) IR (interagency/internal reports) CSWP (cybersecurity white papers) ITL Bulletins Project Descriptions Journal Articles Conference Papers Books Topics Expand or Collapse Security & Privacy Applications Technologies Sectors Laws & Regulations Activities & Products News & Updates Events Glossary About CSRC Expand or Collapse Computer Security Division Cryptographic Technology Software Security Group Hardware Security Group Security Engineering and Risk Management Applied Cybersecurity Division Cybersecurity and Privacy Applications National Cybersecurity Center of Excellence (NCCoE) National Initiative for Cybersecurity Education (NICE) Contact Us Information Technology Laboratory Computer Security Resource Center Publications NIST SP 800-38G Recommendation for Block Cipher Modes of Operation: Methods for Format-Preserving Encryption Share to Facebook Share to X Share to LinkedIn Share ia Email Documentation Topics Date Published: March 2016 (Updated August 4, 2016) Supersedes: SP 800-38G (03/29/2016) Planning Note ( 02/28/2019 ): A draft revision of this publication has been posted for public comment (comments due 4/15/2019). Author(s) Morris Dworkin (NIST) Abstract This Recommendation specifies two methods, called FF1 and FF3, for format-preserving encryption. Both of these methods are modes of operation for an underlying, approved symmetric-key block cipher algorithm. This Recommendation specifies two methods, called FF1 and FF3, for format-preserving encryption. Both of these methods are modes of operation for an underlying, approved symmetric-key block cipher algorithm. Keywords confidentiality ; encryption ; FF1 ; FF3 ; format-preserving encryption ; information security ; block cipher ; mode of operation Control Families System and Communications Protection Documentation Publication: https://doi.org/10.6028/NIST.SP.800-38G Download URL Supplemental Material: Letter of Assurance (from Voltage Security; since acquired by HP, Inc.) (pdf) Publication Parts: SP 800-38A SP 800-38A SP 800-38B SP 800-38C SP 800-38D SP 800-38E SP 800-38F Document History: 08/04/16: SP 800-38G (Final) Topics Security and Privacy authentication , encryption HEADQUARTERS 100 Bureau Drive Gaithersburg, MD 20899 X (link is external) facebook (link is external) linkedin (link is external) instagram (link is external) youtube (link is external) rss govdelivery (link is external) Want updates about CSRC and our publications? Subscribe Contact Us | Our Other Offices Send inquiries to [email protected] Site Privacy Accessibility Privacy Program Copyrights Vulnerability Disclosure No Fear Act Policy FOIA Environmental Policy Scientific Integrity Information Quality Standards Commerce.gov Science.gov USA.gov Vote.gov