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4.7.1 Random Number Generators (RNGs)

NIST platform security: roots of trust, firmware and secure enclaves FIPS 140-2
All changes in this version
first version loaded 4 SECURITY REQUIREMENTS part of 4.7

Title

Random Number Generators (RNGs)

Control

A cryptographic module may employ random number generators (RNGs). If a cryptographic module employs Approved or non-Approved RNGs in an Approved mode of operation, the data output from the RNG shall pass the continuous random number generator test as specified in Section 4.9.2. Approved RNGs shall be subject to the cryptographic algorithm test in Section 4.9.1. Approved RNGs are listed in Annex C to this standard.

Until such time as an Approved nondeterministic RNG standard exists, nondeterministic RNGs approved for use in classified applications may be used for key generation or to seed Approved deterministic RNGs used in key generation. Commercially available nondeterministic RNGs may be used for the purpose of generating seeds for Approved deterministic RNGs. Nondeterministic RNGs shall comply with all applicable RNG requirements of this standard.

An Approved RNG shall be used for the generation of cryptographic keys used by an Approved security function. The output from a non-Approved RNG may be used 1) as input (e.g., seed, and seed key) to an Approved deterministic RNG or 2) to generate initialization vectors (IVs) for Approved security function(s). The seed and seed key shall not have the same value.

Documentation shall specify each RNG (Approved and non-Approved) employed by a cryptographic module.