Hawkynt

RomuQuad

RomuQuad is the highest-quality member of the Romu (Rotate-Multiply) family of pseudo-random number generators designed by Mark Overton. It uses four 64-bit state variables with rotation and multiplication operations to achieve exceptional statistical quality while maintaining very good speed. RomuQuad passes all BigCrush tests with maximum quality and is recommended for demanding applications.

Properties

Property Value
Category Random Number Generators
Sub-category Non-Cryptographic PRNG
Security status 🎓 Educational Only
Complexity Advanced
Inventor Mark Overton
Year 2020
Origin 🇺🇸 United States
Source algorithms/random/romuquad.js

Parameters

Parameter Supported values
Seed sizes 8 bytes (64 bits) to 32 bytes (256 bits)

Capabilities

Flag Value
IsDeterministic Yes
IsCryptographicallySecure No

Security

Status: 🎓 Educational Only

No vulnerabilities are recorded for this implementation.

Documentation

References

Test vectors

4 vectors ship with this algorithm and run in the test suite. Byte values are hexadecimal.

Vector 1 — Seed (1,1,1,1): First four 64-bit outputs from RomuQuad

Field Value
seed 0100000000000000010000000000000001000000000000000100000000000000
outputSize 32
input null
expected 0100000000000000c5f404e83338ad744630db0ad65e973e06fc27105e6ee70d

Vector 2 — Seed (0,0,0,1): First four 64-bit outputs from RomuQuad

Field Value
seed 0000000000000000000000000000000000000000000000000100000000000000
outputSize 32
input null
expected 0000000000000000ffffffffffffffff3a0bfb17ccc7528bffc329dd5dd93536

Vector 3 — Seed via SplitMix64(0): First four 64-bit outputs

Field Value
seed 0000000000000000
outputSize 32
input null
expected afcd1d7b39a820e2a411b89013d70589b48f0a530c9e51d416317aa5131f4cda

Vector 4 — Seed via SplitMix64(1): First four 64-bit outputs

Field Value
seed 0100000000000000
outputSize 32
input null
expected c15c0289ec2d0a9177c8d58103712aa2ada40f24ac878918caf84e08292c94a3

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