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Updates 2025

Random Number Generation Using DRBGs | Pre-Draft Call for Comments on SP 800-90A
September 04, 2025

NIST Special Publication (SP) 800-90Ar1 (Revision 1), Recommendation for Random Number Generation Using Deterministic Random Bit Generators (DRBGs), provides guidelines for generating cryptographically secure random numbers using deterministic methods. This recommendation specifies approved DRBG mechanisms based on hash functions and block ciphers.

NIST is planning a second revision of SP 800-90A to reflect advancements in cryptographic research and maintain consistency across related standards. A public comment period on all aspects of the current SP 800-90A will be open until November 4, 2025. See the full announcement for more details.

Related Topics

Security and Privacy: random number generation

Created September 04, 2025