luniehq
Cosmos Ledger
Cosmos Ledger is a library for interacting with the Cosmos Ledger Nano App. It provides a developer-friendly interface and user friendly error messages for an improved Ledger Nano development experience.
This library is based on ledger-cosmos-js by Juan Leni who also implemented the official Cosmos Ledger Nano App.
Thank you Juan! 🙌
Installation
yarn add @lunie/cosmos-ledgerUsage
Signing with the Ledger Nano
import Ledger from "@lunie/cosmos-ledger"
// generate messages with "@lunie/cosmos-api"
const signMessage = {} || ``
const ledger = await Ledger().connect()
const signature = await ledger.sign(signMessage)Using with cosmos-api
import Ledger from "@lunie/cosmos-ledger"
import Cosmos from "@lunie/cosmos-api"
const privateKey = Buffer.from(...)
const publicKey = Buffer.from(...)
// init cosmos API object
const cosmos = Cosmos(API_URL, ADDRESS)
// create a message
const msg = cosmos
.MsgSend({
toAddress: 'cosmos1abcd09876',
amounts: [{ denom: 'stake', amount: 10 }]
})
// create a signer
const ledgerSigner = async (signMessage) => {
const ledger = new Ledger()
await ledger.connect()
const publicKey = await ledger.getPubKey()
const signature = await ledger.sign(signMessage)
return {
signature,
publicKey
}
}
// send the transaction
const { included } = await msg.send({ gas: 200000 }, ledgerSigner)
// wait for the transaction to be included in a block
await included()Constructor options
Ledger(
{ testModeAllowed = false },
hdPath = [44, 118, 0, 0, 0], // HDPATH
hrp = 'cosmos', // BECH32PREFIX
);