RomuTrio is a member of the Romu (Rotate-Multiply) family of pseudo-random number generators designed by Mark Overton. It uses three 64-bit state variables with rotation and multiplication operations to achieve exceptional speed while passing rigorous statistical tests including PractRand and TestU01.
| Property | Value |
|---|---|
| Category | Random Number Generators |
| Sub-category | Non-Cryptographic PRNG |
| Security status | 🎓 Educational Only |
| Complexity | Intermediate |
| Inventor | Mark Overton |
| Year | 2020 |
| Origin | 🇺🇸 United States |
| Source | algorithms/random/romu.js |
| Parameter | Supported values |
|---|---|
| Seed sizes | 8 bytes (64 bits) to 24 bytes (192 bits) |
| Flag | Value |
|---|---|
IsDeterministic |
Yes |
IsCryptographicallySecure |
No |
Status: 🎓 Educational Only
No vulnerabilities are recorded for this implementation.
4 vectors ship with this algorithm and run in the test suite. Byte values are hexadecimal.
Vector 1 — Seed (1,1,1): First four 64-bit outputs from RomuTrio
| Field | Value |
|---|---|
seed |
010000000000000001000000000000000100000000000000 |
outputSize |
32 |
input |
null |
expected |
01000000000000004b574c4f803e83d300000000000000000000000000000000 |
Vector 2 — Seed (0,0,1): First four 64-bit outputs from RomuTrio
| Field | Value |
|---|---|
seed |
000000000000000000000000000000000100000000000000 |
outputSize |
32 |
input |
null |
expected |
00000000000000004b574c4f803e83d30000000000b074c50000004b574c4f80 |
Vector 3 — Seed via SplitMix64(0): First four 64-bit outputs
| Field | Value |
|---|---|
seed |
0000000000000000 |
outputSize |
32 |
input |
null |
expected |
afcd1d7b39a820e22527b99d5442ccc1cc7de71af3e3464122857317d8d4882f |
Vector 4 — Seed via SplitMix64(1): First four 64-bit outputs
| Field | Value |
|---|---|
seed |
0100000000000000 |
outputSize |
32 |
input |
null |
expected |
c15c0289ec2d0a918af4a90cab8108115e4371067b6d365af7421d4ce665d833 |