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Ledger sign signatures (#213)

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* Ledger sign signatures

* wrapResult -> withApp

* version: [major, minor, patch]
This commit is contained in:
Jaco Greeff
2019-09-18 08:09:19 +02:00
committed by GitHub
parent 448d67b7f8
commit 0175ef628d
2 changed files with 9 additions and 13 deletions
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packages/ui-keyring/src/ledger-polkadot.d.ts
Vendored
+1 -1
View File
@@ -20,7 +20,7 @@ declare module 'ledger-polkadot' {
}
export interface ResponseSign extends ResponseBase {
signature: string;
signature: Buffer;
}
declare class LedgerApp {
packages/ui-keyring/src/ledger.ts
+8 -12
View File
@@ -8,7 +8,7 @@ import LedgerHid from '@ledgerhq/hw-transport-node-hid';
import LedgerU2F from '@ledgerhq/hw-transport-u2f';
import LedgerWebUSB from '@ledgerhq/hw-transport-webusb';
import LedgerApp, { ResponseBase } from 'ledger-polkadot';
import { assert, u8aToBuffer } from '@polkadot/util';
import { assert, bufferToU8a, u8aToBuffer, u8aToHex } from '@polkadot/util';
export type LedgerTypes = 'hid' | 'u2f' | 'webusb';
@@ -24,9 +24,7 @@ export interface LedgerSignature {
export interface LedgerVersion {
isLocked: boolean;
isTestMode: boolean;
major: number;
minor: number;
patch: number;
version: [number, number, number];
}
export const LEDGER_DEFAULT_ACCOUNT = 0x80000000;
@@ -70,7 +68,7 @@ export default class Ledger {
return this.app;
}
private async wrapResult <T> (fn: (app: LedgerApp) => Promise<T>): Promise<T> {
private async withApp <T> (fn: (app: LedgerApp) => Promise<T>): Promise<T> {
try {
const app = await this.getApp();
@@ -93,7 +91,7 @@ export default class Ledger {
}
public async getAddress (confirm = false, account = LEDGER_DEFAULT_ACCOUNT, change = LEDGER_DEFAULT_CHANGE, addressIndex = LEDGER_DEFAULT_INDEX): Promise<LedgerAddress> {
return this.wrapResult(async (app: LedgerApp): Promise<LedgerAddress> => {
return this.withApp(async (app: LedgerApp): Promise<LedgerAddress> => {
const { address, pubKey } = await this.wrapError(app.getAddress(account, change, addressIndex, confirm));
return {
@@ -104,26 +102,24 @@ export default class Ledger {
}
public async getVersion (): Promise<LedgerVersion> {
return this.wrapResult(async (app: LedgerApp): Promise<LedgerVersion> => {
return this.withApp(async (app: LedgerApp): Promise<LedgerVersion> => {
const { device_locked, major, minor, patch, test_mode } = await this.wrapError(app.getVersion());
return {
isLocked: device_locked,
isTestMode: test_mode,
major,
minor,
patch
version: [major, minor, patch]
};
});
}
public async sign (message: Uint8Array, account = LEDGER_DEFAULT_ACCOUNT, change = LEDGER_DEFAULT_CHANGE, addressIndex = LEDGER_DEFAULT_INDEX): Promise<LedgerSignature> {
return this.wrapResult(async (app: LedgerApp): Promise<LedgerSignature> => {
return this.withApp(async (app: LedgerApp): Promise<LedgerSignature> => {
const buffer = u8aToBuffer(message);
const { signature } = await this.wrapError(app.sign(account, change, addressIndex, buffer));
return {
signature: `0x${signature}`
signature: u8aToHex(bufferToU8a(signature))
};
});
}