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 800-90A Rev. 1 Recommendation for Random Number Generation Using Deterministic Random Bit Generators Share to Facebook Share to X Share to LinkedIn Share ia Email Documentation Topics Date Published: June 2015 Supersedes: SP 800-90A (01/23/2012) Author(s) Elaine Barker (NIST) , John Kelsey (NIST) Abstract This Recommendation specifies mechanisms for the generation of random bits using deterministic methods. The methods provided are based on either hash functions or block cipher algorithms. This Recommendation specifies mechanisms for the generation of random bits using deterministic methods. The methods provided are based on either hash functions or block cipher algorithms. Keywords deterministic random bit generator (DRBG) ; entropy ; hash function ; random number generator Control Families System and Communications Protection Documentation Publication: https://doi.org/10.6028/NIST.SP.800-90Ar1 Download URL Supplemental Material: Press Release Publication Parts: SP 800-90B SP 800-90C Related NIST Publications: SP 800-90A Rev. 2 (Draft) Document History: 06/24/15: SP 800-90A Rev. 1 (Final) Topics Security and Privacy encryption , random number generation , secure hashing 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