digicore-wallet-client

The official client library for [digicore-wallet-service] (https://github.com/bitpay/digicore-wallet-service).

Description

This package communicates with BWS Digicore wallet service using the REST API. All REST endpoints are wrapped as simple async methods. All relevant responses from BWS are checked independently by the peers, thus the importance of using this library when talking to a third party BWS instance.

See [Digicore-wallet] (https://github.com/bitpay/digicore-wallet) for a simple CLI wallet implementation that relays on BWS and uses digicore-wallet-client.

Get Started

You can start using digicore-wallet-client in any of these two ways:

• via Bower: by running bower install digicore-wallet-client from your console
• or via NPM: by running npm install digicore-wallet-client from your console.

Example

Start your own local Digicore wallet service instance. In this example we assume you have digicore-wallet-service running on your localhost:3232.

Then create two files irene.js and thomas.js with the content below:

irene.js

var Client = require('digicore-wallet-client');
var fs = require('fs');
var BWS_INSTANCE_URL = 'http://localhost:3232/bws/api'

var client = new Client({
  baseUrl: BWS_INSTANCE_URL,
  verbose: false,
});

client.createWallet("My Wallet", "Irene", 2, 2, {network: 'testnet'}, function(err, secret) {
  // Handle err
  console.log('Wallet Created. Share this secret with your copayers: ' + secret);
  fs.writeFileSync('irene.dat', client.export());
});

thomas.js

var Client = require('digicore-wallet-client');
var fs = require('fs');
var BWS_INSTANCE_URL = 'http://localhost:3232/bws/api'
var secret = process.argv[2];

var client = new Client({
  baseUrl: BWS_INSTANCE_URL,
  verbose: false,
});

client.joinWallet(secret,  "Thomas", function(err, wallet) {
  // Handle err
  console.log('Joined ' + wallet.name + '!');
  fs.writeFileSync('thomas.dat', client.export());
});

Install digicore-wallet-client before start:

npm i digicore-wallet-client

Create a new wallet with the first script:

$ node irene.js
info Generating new keys 
 Wallet Created. Share this secret with your copayers: JbTDjtUkvWS4c3mgAtJf4zKyRGzdQzZacfx2S7gRqPLcbeAWaSDEnazFJF6mKbzBvY1ZRwZCbvT

Join to this wallet with generated secret:

$ node thomas.js JbTDjtUkvWS4c3mgAtJf4zKyRGzdQzZacfx2S7gRqPLcbeAWaSDEnazFJF6mKbzBvY1ZRwZCbvT
Joined My Wallet!

Note that the scripts created two files named irene.dat and thomas.dat. With these files you can get status, generate addresses, create proposals, sign transactions, etc.

API Client

• new API(opts)
• api.seedFromExtendedPrivateKey(xPrivKey)
• api.seedFromRandom(xPrivKey)
• api.export(opts)
• api.import(opts)
• api.isComplete()
• api.openWallet(cb)
• api.createWallet(walletName, copayerName, m, n, opts, cb)
• api.joinWallet(secret, copayerName, cb)
• api.getStatus(cb)
• api.sendTxProposal(opts)
• api.getTx(id, cb)
• api.createAddress(cb)
• api.getMainAddresses(opts, cb)
• api.getBalance(cb)
• api.getTxProposals(opts)
• api.signTxProposal(txp, cb)
• api.rejectTxProposal(txp, reason, cb)
• api.broadcastTxProposal(txp, cb)
• api.removeTxProposal(txp, cb)
• api.getTxHistory(opts, cb)
• api.setPrivateKeyEncryption(password, opts)
• api.unlock(password)
• api.lock()
• api.getUtxos()

###new API(opts) ClientAPI constructor.

Params

• opts Object

###API.seedFromExtendedPrivateKey(xPrivKey) Seed from extended private key

Params

• xPrivKey String

###API.seedFromRandom(xPrivKey) Seed from random

Params

• network String

###API.export(opts) Export wallet

Params

• opts Object
  • compressed Boolean
  • noSign Boolean

###API.import(opts) Import wallet

Params

• opts Object
  • compressed Boolean

###API.isComplete() Return if wallet is complete

###API.openWallet(cb) Open a wallet and try to complete the public key ring.

Params

• cb Callback

Returns: Callback - cb - Returns an error and a flag indicating that the wallet has just been completed and needs to be persisted
###API.createWallet(walletName, copayerName, m, n, network, cb) Create a wallet.

Params

• walletName String
• copayerName String
• m Number
• n Number
• opts Object
• opts.network String - 'livenet' or 'testnet'
• opts.walletPrivKey String - Optional: Shared private key for the wallet (used by copayers). Default: create a random one
• opts.id String - Optional: ID for the wallet. Default: Create a random one
• cb Callback

Returns: Callback - cb - Returns the wallet
###API.joinWallet(secret, copayerName, cb) Join to an existent wallet

Params

• secret String
• copayerName String
• cb Callback

Returns: Callback - cb - Returns the wallet
###API.getStatus(cb) Get status of the wallet

Params

• cb Callback

Returns: Callback - cb - Returns error or an object with status information
###API.sendTxProposal(opts) Send a transaction proposal

Params

For a proposal with one output:

• opts Object
  • toAddress String
  • amount Number
  • message String

For a proposal with multiple outputs:

• opts Object
  • type String - 'multiple_outputs'
  • outputs Array
    • toAddress String
    • amount Number
    • message String

Returns: Callback - cb - Return error or the transaction proposal

###API.getTx(id, cb) Gets a transaction proposal

Params

• id String

Returns: Callback - cb - Return error or the transaction proposal

###API.createAddress(cb) Create a new address

Params

• cb Callback

Returns: Callback - cb - Return error or the address
###API.getMainAddresses(opts, cb) Get your main addresses

Params

• opts Object
  • doNotVerify Boolean
• cb Callback

Returns: Callback - cb - Return error or the array of addresses
###API.getBalance(cb) Update wallet balance

Params

• cb Callback

##API.getTxProposals(opts) Get list of transactions proposals

Params

• opts Object
  • doNotVerify Boolean
  • forAirGapped Boolean

Returns: Callback - cb - Return error or array of transactions proposals
###API.signTxProposal(txp, cb) Sign a transaction proposal

Params

• txp Object
• cb Callback

Returns: Callback - cb - Return error or object
###API.signTxProposalFromAirGapped(txp, encryptedPkr, m, n) Sign a transaction proposal from an airgapped device

Params

• txp Object
• encryptedPkr String
• m Number
• n Number
• cb Callback

Returns: Callback - cb - Return error or object
###API.rejectTxProposal(txp, reason, cb) Reject a transaction proposal

Params

• txp Object
• reason String
• cb Callback

Returns: Callback - cb - Return error or object
###API.broadcastTxProposal(txp, cb) Broadcast a transaction proposal

Params

• txp Object
• cb Callback

Returns: Callback - cb - Return error or object
###API.removeTxProposal(txp, cb) Remove a transaction proposal

Params

• txp Object
• cb Callback

Returns: Callback - cb - Return error or empty
###API.getTxHistory(opts, cb) Get transaction history

Params

• opts Object
  • skip Number
  • limit Number
• cb Callback

Returns: Callback - cb - Return error or array of transactions

###API.setPrivateKeyEncryption(password, opts)

Sets up encryption for the extended private key

params

• password string
• opts Object Optional SJCL's encrypting options (like .iten and .salt)

Usage example:

  api.setPrivateKeyEncryption('mypassword');
  ...
  api.getTxProposals({}, function(err, txps) {
    api.unlock('mypassword');
    api.signTxProposal(txps[0], function (err){
      api.lock();
    });
  })

###api.unlock(password)

Tries to unlock (decrypt) the extened private key with the provided password. (setprivatekeyencryption should be called first). lock must be called afterwards to remove the uncrypted private key.

params

• password string

###api.lock()

Removes the unencrypted private key.

###api.getUtxos() Get list of wallet's Unspent Transaction Outputs.