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@lindascan/hw-app-lind

Ledger Hardware Wallet LIND JavaScript bindings.

Are you adding Ledger support to your software wallet?

You may be using this package to communicate with the LIND 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

• Lind
  • Parameters
  • Examples
  • getAddress
    • Parameters
    • Examples
  • signTransaction
    • Parameters
    • Examples
  • signTransactionHash
    • Parameters
    • Examples
  • getAppConfiguration
    • Examples
  • signPersonalMessage
    • Parameters
    • Examples
  • signLIP712HashedMessage
    • Parameters
    • Examples
  • getECDHPairKey
    • Parameters
    • Examples

Lind

Linda API

Parameters

• transport Transport
• scrambleKey (optional, default "LIND")

Examples

import Lind from "@lindascan/hw-app-lind";
const lind = new Lind(transport)

getAddress

get Linda address for a given BIP 32 path.

Parameters

• path string a path in BIP 32 format
• boolDisplay boolean?

Examples

const address = await linda.getAddress("44'/195'/0'/0/0").then(o => o.address)

Returns Promise<{publicKey: string, address: string}> an object with a publicKey and address

signTransaction

sign a Linda transaction with a given BIP 32 path and Token Names

Parameters

• path string a path in BIP 32 format
• rawTxHex string a raw transaction hex string
• tokenSignatures Array<string> Tokens Signatures array

Examples

const signature = await linda.signTransaction("44'/195'/0'/0/0", "0a02f5942208704dda506d59dceb40f0f4978f802e5a69080112650a2d747970652e676f6f676c65617069732e636f6d2f70726f746f636f6c2e5472616e73666572436f6e747261637412340a1541978dbd103cfe59c35e753d09dd44ae1ae64621c7121541e2ae49db6a70b9b4757d2137a43b69b24a445780188ef8b5ba0470cbb5948f802e", [], 105);

Returns Promise<string> a signature as hex string

signTransactionHash

sign a Linda transaction hash with a given BIP 32 path

Parameters

• path string a path in BIP 32 format
• rawTxHashHex string
• rawTxHex a raw transaction hex string

Examples

const signature = await linda.signTransactionHash("44'/195'/0'/0/0", "25b18a55f86afb10e7aca38d0073d04c80397c6636069193953fdefaea0b8369");

Returns Promise<string> a signature as hex string

getAppConfiguration

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

Examples

const result = await linda.getAppConfiguration();
{
  "version": "0.1.5",
  "versionN": "105".
  "allowData": false,
  "allowContract": false,
  "truncateAddress": false,
  "signByHash": false
}

Returns Promise<{allowContract: boolean, truncateAddress: boolean, allowData: boolean, signByHash: boolean, version: string, versionN: number}> an object with a version

signPersonalMessage

sign a Linda Message with a given BIP 32 path

Parameters

• path string a path in BIP 32 format
• messageHex string
• message hex string to sign

Examples

const signature = await linda.signPersonalMessage("44'/195'/0'/0/0", "43727970746f436861696e2d54726f6e5352204c6564676572205472616e73616374696f6e73205465737473");

Returns Promise<string> a signature as hex string

signLIP712HashedMessage

Sign a typed data. The host computes the domain separator and hashStruct(message)

Parameters

• path string
• domainSeparatorHex string
• hashStructMessageHex string

Examples

const signature = await lindaApp.signLIP712HashedMessage("44'/195'/0'/0/0",Buffer.from( "0101010101010101010101010101010101010101010101010101010101010101").toString("hex"), Buffer.from("0202020202020202020202020202020202020202020202020202020202020202").toString("hex"));

getECDHPairKey

get Linda address for a given BIP 32 path.

Parameters

• path string a path in BIP 32 format
• publicKey string address public key to generate pair key

Examples

const signature = await linda.getECDHPairKey("44'/195'/0'/0/0", "04ff21f8e64d3a3c0198edfbb7afdc79be959432e92e2f8a1984bb436a414b8edcec0345aad0c1bf7da04fd036dd7f9f617e30669224283d950fab9dd84831dc83");

Returns Promise<string> shared key hex string,