HDWalletKit

HDWalletKit is a Swift framwork that enables you to create and use bitcoin HD wallet (Hierarchical Deterministic Wallets) in your own app.

You can check if the address generation is working right [here](https://iancoleman.io/bip39/).

Features

HD and NonHD wallets support
Mnemonic recovery phrease in BIP39
Keystore generation
Read keystore file
Sign ether transaction
ERC20 Tokens
Sign UTXO based transaction

Installation

CocoaPods

To integrate HDWalletKit into your Xcode project using CocoaPods, specify it in your Podfile:

pod 'HDWalletKit'

Carthage

To install with Carthage, simply add this in your Cartfile:

github "essentiaone/HDWallet"

Communication

If you found a bug, open an issue.
If you have a feature request, open an issue.
If you want to contribute, submit a pull request.

How to use

Generate seed and convert it to mnemonic sentence.

let entropy = Data(hex: "000102030405060708090a0b0c0d0e0f")
let mnemonic = Mnemonic.create(entropy: entropy)
print(mnemonic)
// abandon amount liar amount expire adjust cage candy arch gather drum buyer

let seed = Mnemonic.createSeed(mnemonic: mnemonic)
print(seed.toHexString())

PrivateKey and key derivation (BIP39)

let mnemonic = Mnemonic.create()
let seed = Mnemonic.createSeed(mnemonic: mnemonic)
let privateKey = PrivateKey(seed: seed, coin: .bitcoin)

// BIP44 key derivation
// m/44'
let purpose = privateKey.derived(at: .hardened(44))

// m/44'/0'
let coinType = purpose.derived(at: .hardened(0))

// m/44'/0'/0'
let account = coinType.derived(at: .hardened(0))

// m/44'/0'/0'/0
let change = account.derived(at: .notHardened(0))

// m/44'/0'/0'/0/0
let firstPrivateKey = change.derived(at: .notHardened(0))
print(firstPrivateKey.publicKey.address)

Generate keystore file

let data = "abandon amount liar amount expire adjust cage candy arch gather drum buyer"
let keystore = try! KeystoreV3(data: data, password: "qwertyui")
let encodedKeystoreDaya = (try? keystore?.encodedData())

Open keystore file

let keystore = try! KeystoreV3(data: encodedKeystoreDaya, password: password)
guard let decoded = try? keystore?.getDecriptedKeyStore(password: password) else {
fatalError()
}
print(decoded)

Create your wallet and generate address

let mnemonic = Mnemonic.create()
let seed = Mnemonic.createSeed(mnemonic: mnemonic)
let network: Network = .main(.bitcoin)
let wallet = Wallet(seed: seed, network: network)
let account = wallet.generateAccount()
print(account)

Sign Ethereum transaction by private key

let signer = EIP155Signer()
let rawTransaction1 = EthereumRawTransaction(
    value: Wei("10000000000000000")!,
    to: "0x34205555576717bBdF8158E2b2c9ed64EB1e6B85",
    gasPrice: 99000000000,
    gasLimit: 21000,
    nonce: 2
)
guard let signed = try? signer.hash(rawTransaction: rawTransaction1).toHexString() else { return }
print(signed)

Sign Bitcoin transaction by private key

For getting UTXO you can use (https://github.com/essentiaone/essentia-bridges-api-ios)

let address = try LegacyAddress("1HLqrFX5fYwKriU7LRKMQGhwpz5HuszjnK", coin: .bitcoin)
let utxoWallet = UTXOWallet(privateKey: "Kz9UKkL6bKE92QPxQbPcqkCZTnCyLVyfRNFRSbToNjyb4bx321fh")
let signedTx = try utxoWallet.createTransaction(to: address, amount: 0, utxos: utxos)

Create send ERC20 tokens transaction data

let erc20Token = ERC20(contractAddress: "0x8f0921f30555624143d427b340b1156914882c10", decimal: 18, symbol: "ESS")
let address = "0x2f5059f64D5C0c4895092D26CDDacC58751e0C3C"
let data = try! erc20Token.generateDataParameter(toAddress: address, amount: "3")

Create get balance ERC20 token transaction data

let erc20Token = ERC20(contractAddress: "0x8f0921f30555624143d427b340b1156914882c10", decimal: 18, symbol: "ESS")
let data = try! erc20Token.generateGetBalanceParameter(toAddress: "2f5059f64D5C0c4895092D26CDDacC58751e0C3C")

Convert non HD PrivateKey to Address

let privateKey = PrivateKey(pk: "L35qaFLpbCc9yCzeTuWJg4qWnTs9BaLr5CDYcnJ5UnGmgLo8JBgk", coin: .bitcoin)
print(privateKey.publicKey.address)
//128BCBZndgrPXzEgF4QbVR3jnQGwzRtEz5

License

WalletKit is released under the MIT License.

essentiaone / HDWallet