UUID type for Dart

This package provides implementation of Universally Unique Identifier (UUID) for Dart, and supports generation, parsing and formatting of UUIDs.

Features:

• Creates UUID from string and byte-array, as well as GUID and URN strings
• Provides access to variant, version and byte data of UUID
• Generates RFC4122 version 1, version 4, or version 5 UUIDs
• Implements Comparable for UUID comparison and lexicographical sorting
• Runs in web, server, and flutter

RFC Version support:

• v1, based on timestamp and MAC address
• v2, based on timestamp, MAC address and POSIX UID/GID (DCE 1.1) Not planned
• v3, based on MD5 hashing Not planned
• v4, based on random numbers
• v5, based on SHA-1 hashing
• v6, A re-ordering of UUID version 1 so it is sortable as an opaque sequence of bytes
• v7, An entirely new time-based UUID bit layout sourced from the widely implemented and well known Unix Epoch timestamp source
• v8, A free-form UUID format which has no explicit requirements except maintaining backward compatibility.

Requirements

• Dart SDK >= 2.12.0
• crypto package

Getting Started

Installation

1. Add an entry in your pubspec.yaml for uuid_type

dependencies:
  uuid_type: ^2.1.0

2. Run pub get (flutter packages get for Flutter)
3. Import

import 'package:uuid_type/uuid_type.dart';

Usage

Generate UUIDs

import 'package:uuid_type/uuid_type.dart';

void main() {
  var u = TimeUuidGenerator().generate();
  print(u.toString());

  u = NameUuidGenerator(NameUuidGenerator.urlNamespace).generateFromString('https://dart.dev/');
  print(u.toString());

  u = RandomUuidGenerator().generate();
  print(u.toString());
}

See more examples and Documentation

Release notes

See CHANGELOG

Features and Bugs

Please file bugs and feature requests at the issue tracker.