Crypto wallet package for Bitcoin, Ethereum and Tron written in pure Dart.

Getting started

In your pubspec.yaml file add:

dependencies:
wallet: any

Usage

Create Tron address from Mnemonic and Passphrase

import'package:wallet/wallet.dart'as wallet;
final mnemonic ='<YOUR MNEMONIC>';
final passphrase ='';
final seed = wallet.mnemonicToSeed(mnemonic, passphrase: passphrase);
final master = wallet.ExtendedPrivateKey.master(seed, wallet.xprv);
final root = master.forPath("m/44'/195'/0'/0/0");
final privateKey = wallet.PrivateKey((root as wallet.ExtendedPrivateKey).key);
final publicKey = wallet.tron.createPublicKey(privateKey);
final address = wallet.tron.createAddress(publicKey);
print(address);

Validate a Tron address

import'package:wallet/wallet.dart'as wallet;
const address ='TCB9WxaRSMEXiVaVys9DEAXbRc6JNuKpjA';
final isValid = wallet.isValidTronAddress(address);
print(isValid); // True

Validate an Ethereum address

import'package:wallet/wallet.dart'as wallet;
const ethAddress ='0x52908400098527886E0F7030069857D2E4169EE7';
// Verify EIP-55 checksum (accepts lowercase or uppercase as valid)final isValidEth = wallet.EthereumAddress.isEip55ValidEthereumAddress(ethAddress);
print(isValidEth); // True// Parse and optionally enforce checksumfinal address = wallet.EthereumAddress.fromHex(
ethAddress,
enforceEip55:true,
);
print(address); // Mixed-case checksummed address without 0x prefix