biski64 is a very fast, high-quality 64-bit PRNG with 192-bit state combining a Weyl sequence with rotation-based mixing functions. It guarantees minimum period of 2^64 through proven injectivity and passes BigCrush and PractRand statistical tests. Designed for both single-threaded and parallel applications with exceptional performance.
| Property | Value |
|---|---|
| Category | Random Number Generators |
| Sub-category | Non-Cryptographic PRNG |
| Security status | 🎓 Educational Only |
| Complexity | Beginner |
| Inventor | Daniel Cota |
| Year | 2025 |
| Origin | 🇺🇸 United States |
| Source | algorithms/random/biski64.js |
| Parameter | Supported values |
|---|---|
| Seed sizes | 1 byte (8 bits) to 8 bytes (64 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=0: First five 64-bit outputs (verified against C reference)
| Field | Value |
|---|---|
seed |
0000000000000000 |
outputSize |
40 |
input |
null |
expected |
0c89ec27d6f6deb3480d14acdb6dd755 a956f8213e8036fbb31a828a3c4ff972 7f3704a8c3956b43 |
Vector 2 — Seed=1: First five 64-bit outputs
| Field | Value |
|---|---|
seed |
01 |
outputSize |
40 |
input |
null |
expected |
6b67c277227bdf8de2c9215a1a382289 ba3902db374aa0aa80ada2e1a2a0769d 62efd36d4878e6af |
Vector 3 — Seed=12345: First five 64-bit outputs
| Field | Value |
|---|---|
seed |
3930 |
outputSize |
40 |
input |
null |
expected |
1abb804492c09d2ed947f0f2f2b3d28f bdb884622cf8bb170f4079403772a29d a154733485f249df |
Vector 4 — Seed=0xDEADBEEF: First five 64-bit outputs
| Field | Value |
|---|---|
seed |
efbeadde |
outputSize |
40 |
input |
null |
expected |
71f017b36988261245aec3c31eacf8c2 005689f091e6f3d9f86cf5dd0d3e23b2 4497b4928abc68be |