@ledgerhq/hw-app-xrp NPM

GitHub, Ledger Devs Discord, Developer Portal

@ledgerhq/hw-app-xrp

Ledger Hardware Wallet XRP JavaScript bindings.

Are you adding Ledger support to your software wallet?

You may be using this package to communicate with the XRP Nano App.

For a smooth and quick integration:

See the developers’ documentation on the Developer Portal and
Go on Discord to chat with developer support and the developer community.

API

Xrp

XRP API

Parameters

transport Transport
scrambleKey (optional, default "XRP")

Examples

import Transport from "@ledgerhq/hw-transport-node-hid";
// import Transport from "@ledgerhq/hw-transport-u2f"; // for browser
import Xrp from "@ledgerhq/hw-app-xrp";
import { encode } from 'ripple-binary-codec';

function establishConnection() {
    return Transport.create()
        .then(transport => new Xrp(transport));
}

function fetchAddress(xrp) {
    return xrp.getAddress("44'/144'/0'/0/0");
}

function signTransaction(xrp, deviceData, seqNo) {
    let transactionJSON = {
        TransactionType: "Payment",
        Account: deviceData.address,
        Destination: "rTooLkitCksh5mQa67eaa2JaWHDBnHkpy",
        Amount: "1000000",
        Fee: "15",
        Flags: 2147483648,
        Sequence: seqNo,
        SigningPubKey: deviceData.publicKey.toUpperCase()
    };

    const transactionBlob = encode(transactionJSON);

    console.log('Sending transaction to device for approval...');
    return xrp.signTransaction("44'/144'/0'/0/0", transactionBlob);
}

function prepareAndSign(xrp, seqNo) {
    return fetchAddress(xrp)
        .then(deviceData => signTransaction(xrp, deviceData, seqNo));
}

establishConnection()
    .then(xrp => prepareAndSign(xrp, 123))
    .then(signature => console.log(`Signature: ${signature}`))
    .catch(e => console.log(`An error occurred (${e.message})`));

getAddress

get XRP address for a given BIP 32 path.

Parameters

path string a path in BIP 32 format
display boolean? optionally enable or not the display
chainCode boolean? optionally enable or not the chainCode request
ed25519 boolean? optionally enable or not the ed25519 curve (secp256k1 is default)

Examples

const result = await xrp.getAddress("44'/144'/0'/0/0");
const { publicKey, address } = result;

Returns Promise<{publicKey: string, address: string, chainCode: string?}> an object with a publicKey, address and (optionally) chainCode

signTransaction

sign a XRP transaction with a given BIP 32 path

The rawTxHex parameter is the serialized transaction blob represented as hex.

Parameters

path string a path in BIP 32 format
rawTxHex string a raw hex string representing a serialized transaction blob. This parameter can be encoded using ripple-binary-codec. See https://xrpl.org/serialization.html for more documentation on the serialization format.
ed25519 boolean? optionally enable or not the ed25519 curve (secp256k1 is default)

Examples

const signature = await xrp.signTransaction("44'/144'/0'/0/0", "12000022800000002400000002614000000001315D3468400000000000000C73210324E5F600B52BB3D9246D49C4AB1722BA7F32B7A3E4F9F2B8A1A28B9118CC36C48114F31B152151B6F42C1D61FE4139D34B424C8647D183142ECFC1831F6E979C6DA907E88B1CAD602DB59E2F");

Returns Promise [string](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String) a signature as hex string

getAppConfiguration

get the version of the XRP app installed on the hardware device

Examples

const result = await xrp.getAppConfiguration();

{
  "version": "1.0.3"
}

Returns Promise<{version: string}> an object with a version

Ledger LedgerWallet Ripple xrp NanoS Blue Hardware Wallet

bip32-path @ledgerhq/hw-transport

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@ledgerhq/hw-app-xrp v6.29.4