Hawkynt

Philox4x32-10

Counter-based PRNG using integer multiplication in a Feistel-like network. Trivially parallelizable with 2^128 period, passes all TestU01 statistical tests. Part of the Random123 library by D. E. Shaw Research.

Properties

Property Value
Category Random Number Generators
Sub-category Counter-Based PRNG
Security status πŸŽ“ Educational Only
Complexity Intermediate
Inventor John K. Salmon, Mark A. Moraes, Ron O. Dror, David E. Shaw
Year 2011
Origin πŸ‡ΊπŸ‡Έ United States
Source algorithms/random/philox.js

Parameters

Parameter Supported values
Key sizes 8 bytes (64 bits)

Capabilities

Flag Value
IsDeterministic Yes
IsCryptographicallySecure No
IsCounterBased Yes

Security

Status: πŸŽ“ Educational Only

No vulnerabilities are recorded for this implementation.

Documentation

References

Test vectors

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

Vector 1 β€” Philox4x32-10: Counter=0, Key=0 - Random123 kat_vectors

Field Value
key 0000000000000000
outputSize 16
input 00000000000000000000000000000000
expected d5e827668dc569e14cac57bcd8db009b

Vector 2 β€” Philox4x32-10: Counter=0xFFFFFFFF (all), Key=0xFFFFFFFF (all) - Random123 kat_vectors

Field Value
key ffffffffffffffff
outputSize 16
input ffffffffffffffffffffffffffffffff
expected 6d278f400e3bc841c6c70ba2fd51546d

Vector 3 β€” Philox4x32-10: Counter=Ο€ digits, Key=Ο€ digits - Random123 kat_vectors

Field Value
key 223809a4d0319f29
outputSize 16
input 886a3f24d308a3852e8a191344737003
expected 09fe6cd1ebccfd9420e40150a16e1224

Vector 4 β€” Philox4x32-10: Counter=(1,0,0,0), Key=(0,0) - Counter variation

Field Value
key 0000000000000000
outputSize 16
input 01000000000000000000000000000000
expected a4cce4f8db00b25ceb74a5b167ff7e09

Vector 5 β€” Philox4x32-10: Counter=(0,0,0,0), Key=(1,0) - Key variation

Field Value
key 0100000000000000
outputSize 16
input 00000000000000000000000000000000
expected 7006e8e3bc0e0ae5c022f29527aa15b6

← All algorithms

This site is open source. Improve this page.