Non-deterministic Random Bit Generator

nounid 3374·updated May 12, 2026

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An RBG that (when working properly) produces outputs that have full entropy. Contrast with a DRBG. Other names for non-deterministic RBGs are True Random Number (or Bit) Generators and, simply, Random Number (or Bit) Generators.

MWE

Classifications

per-axis with provenance

Entity Type

Capability0%rule-basedmulti_axis_classifier_low_confidence.v1

Sensitivity

—85%llm-generatedllm:claude-haiku-4-5

Information Class

—90%llm-generatedllm:claude-haiku-4-5

Variants

4 surface forms

acronym: NRBG
plural: Non-deterministic Random Bit Generators
possessive: Non-deterministic Random Bit Generator's
pluralpossessive: Non-deterministic Random Bit Generators'

Framework definitions

2 senses across 2 frameworks

NISTIR 7298: Glossary of Key Information Security Terms, Revision 21 senseview framework →

§1: An RBG that (when working properly) produces outputs that have full entropy. Contrast with a DRBG. Other names for non-deterministic RBGs are True Random Number (or Bit) Generators and, simply, Random Number (or Bit) Generators.

NIST SP 800-90A1 senseview framework →

§1: An RBG that (when working properly) produces outputs that have full entropy. Contrast with a DRBG. Other names for non-deterministic RBGs are True Random Number (or Bit) Generators and, simply, Random Number (or Bit) Generators.

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