smchash #

High-performance hash function passing all 188 SMHasher3 quality tests.

Features #

• Fast: Passes all 188 SMHasher3 quality tests
• Built-in PRNG: smcRand() passes BigCrush and PractRand
• Pure Dart: No native dependencies
• Cross-platform: Works on all Dart/Flutter platforms

Installation #

dependencies:
  smchash: ^0.1.0

Usage #

import 'dart:convert';
import 'package:smchash/smchash.dart';

void main() {
  // Basic hashing
  final data = utf8.encode('Hello, World!');
  final hash = smchash(data);
  print('Hash: 0x${hash.toRadixString(16)}');

  // Seeded hashing
  final seeded = smchashSeeded(data, 12345);
  print('Seeded: 0x${seeded.toRadixString(16)}');

  // PRNG
  final rng = SmcRandState(42);
  print('Random: ${rng.next()}, ${rng.next()}, ${rng.next()}');
}

API #

Hash Functions #

• smchash(List<int> data) - Hash with default seed
• smchashSeeded(List<int> data, int seed) - Hash with custom seed

PRNG #

• smcRand(int seed) - Returns (value, newSeed) tuple
• SmcRandState - Mutable wrapper for easier PRNG usage

License #

MIT License - Copyright 2025 ScaleCode Solutions