@ledgerhq/hw-app-xrp v6.28.6
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
Table of Contents
Xrp
XRP API
Parameters
transport
TransportscrambleKey
(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 formatdisplay
boolean? optionally enable or not the displaychainCode
boolean? optionally enable or not the chainCode requested25519
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 formatrawTxHex
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"
}
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