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NIST SP 800-90C

Recommendation for Random Bit Generator (RBG) Constructions

Date Published: September 2025

Author(s)

Elaine Barker (NIST), John Kelsey (NIST), Kerry McKay (NIST), Allen Roginsky (NIST), Meltem Sönmez Turan (NIST)

Abstract

Keywords

deterministic random bit generator (DRBG); entropy; entropy source; random bit generator (RBG); randomness source; RBG1 construction; RBG2 construction; RBG3 construction; RBGC construction; subordinate DRBG (sub-DRBG)
Control Families

None selected

Documentation

Publication:
https://doi.org/10.6028/NIST.SP.800-90C
Download URL

Supplemental Material:
RBG project

Publication Parts:
SP 800-90A Rev. 1
SP 800-90B

Document History:
09/05/12: SP 800-90C (Draft)
04/13/16: SP 800-90C (Draft)
09/07/22: SP 800-90C (Draft)
07/03/24: SP 800-90C (Draft)
09/25/25: SP 800-90C (Final)

Topics

Security and Privacy

random number generation