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@blooo/hw-app-velas

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  • License Apache-2.0

Ledger Hardware Wallet Velas Application API

Package Exports

  • @blooo/hw-app-velas
  • @blooo/hw-app-velas/lib-es/Velas.js
  • @blooo/hw-app-velas/lib/Velas.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (@blooo/hw-app-velas) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Github, Ledger Devs Slack

@blooo/hw-app-velas

Ledger Hardware Wallet Velas JavaScript bindings.

Notes

To run speculos-smoke test make sure Speculos running (apdu port 9999 and api rest endpoint http://0.0.0.0:5000) with Velas app installed on it. Then run the command from root workspace:

$ yarn run ts-node packages/hw-app-velas/tests/speculos-smoke.ts

Troubleshooting

If ledger returns error 6808 - enable blind signature in settings (not needed for unit testing).

API

Table of Contents

Velas

Velas API

Parameters

  • transport Transport a transport for sending commands to a device
  • scrambleKey string a scramble key (optional, default "velas_default_scramble_key")

Examples

import Velas from "@blooo/hw-app-velas";
const velas = new Velas(transport);

getAddress

Get Velas address (public key) for a BIP32 path.

Because Velas uses Ed25519 keypairs, as per SLIP-0010 all derivation-path indexes will be promoted to hardened indexes.

Parameters
  • path string a BIP32 path
  • display boolean flag to show display (optional, default false)
Examples
velas.getAddress("44'/501'/0'").then(r => r.address)

Returns Promise<{address: Buffer}> an object with the address field

signTransaction

Sign a Velas transaction.

Parameters
  • path string a BIP32 path
  • txBuffer Buffer serialized transaction
Examples
velas.signTransaction("44'/501'/0'", txBuffer).then(r => r.signature)

Returns Promise<{signature: Buffer}> an object with the signature field

getAppConfiguration

Get application configuration.

Examples
velas.getAppConfiguration().then(r => r.version)

Returns Promise<AppConfig> application config object